[ { "id": "amirkhanov-2011", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Projection-Based Metal-Artifact Reduction for Industrial 3D X-ray Computed Tomography", "date": "2011-12", "abstract": "Multi-material components, which contain metal parts surrounded by plastic materials, are highly interesting for inspection using industrial 3D X-ray computed tomography (3DXCT). Examples of this application scenario are connectors or housings with metal inlays in the electronic or automotive industry. A major problem of this type of components is the presence of metal, which causes streaking artifacts and distorts the surrounding media in the reconstructed volume. Streaking artifacts and dark-band artifacts around metal components significantly influence the material characterization (especially for the plastic components). In specific cases these artifacts even prevent a further analysis. Due to the nature and the different characteristics of artifacts, the development of an efficient artifact-reduction technique in reconstruction-space is rather complicated. In this paper we present a projection-space pipeline for metal-artifacts reduction. The proposed technique first segments the metal in the spatial domain of the reconstructed volume in order to separate it from the other materials. Then metal parts are forward-projected on the set of projections in a way that metal-projection regions are treated as voids. Subsequently the voids, which are left by the removed metal, are interpolated in the 2D projections. Finally, the metal is inserted back into the reconstructed 3D volume during the fusion stage. We present a visual analysis tool, allowing for interactive parameter estimation of the metal segmentation. The results of the proposed artifact-reduction technique are demonstrated on a test part as well as on real world components. For these specimens we achieve a significant reduction of metal artifacts, allowing an enhanced material characterization.", "authors_et_al": false, "substitute": null, "main_image": { "description": "The plug specimen photo (left) and volume renderings before (center) and after (right) metal-artifact reduction.", "filetitle": "teaser", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 7072, "image_height": 2034, "name": "amirkhanov-2011-teaser.png", "type": "image/png", "size": 2709550, "path": "Publication:amirkhanov-2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/amirkhanov-2011/amirkhanov-2011-teaser.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/amirkhanov-2011/amirkhanov-2011-teaser:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 817, 611, 789, 613, 166 ], "date_from": "2011-10-23", "date_to": "2011-10-28", "event": "IEEE VisWeek 2011", "issn": "1077-2626", "journal": "IEEE Transactions on Visualization and Computer Graphics", "lecturer": [ 817 ], "location": "Providence, RI, USA", "number": "12", "pages_from": "2193", "pages_to": "2202", "volume": "17", "research_areas": [ "VisMat" ], "keywords": [ "Metal-artifact reduction", "multi-material components", "3D X-ray computed tomography", "visual analysis" ], "weblinks": [], "files": [ { "description": "Fast forward material", "filetitle": "fast forward", "main_file": true, "use_in_gallery": false, "access": "public", "preview_image_width": 1024, "preview_image_height": 640, "name": "amirkhanov-2011-fast forward.wmv", "type": "text/plain", "size": 5625746, "path": "Publication:amirkhanov-2011", "preview_name": "amirkhanov-2011-fast forward:preview.png", "preview_type": "image/jpeg", "preview_size": 26848, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/amirkhanov-2011/amirkhanov-2011-fast forward.wmv", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/amirkhanov-2011/amirkhanov-2011-fast forward:thumb{{size}}.png" }, { "description": "Manuscript file", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "amirkhanov-2011-paper.pdf", "type": "application/pdf", "size": 7987981, "path": "Publication:amirkhanov-2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/amirkhanov-2011/amirkhanov-2011-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/amirkhanov-2011/amirkhanov-2011-paper:thumb{{size}}.png" }, { "description": "Presentation slides", "filetitle": "slides", "main_file": true, "use_in_gallery": false, "access": "public", "name": "amirkhanov-2011-slides.pptx", "type": "application/zip", "size": 5644806, "path": "Publication:amirkhanov-2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/amirkhanov-2011/amirkhanov-2011-slides.pptx", "thumb_image_sizes": [] }, { "description": "The plug specimen photo (left) and volume renderings before (center) and after (right) metal-artifact reduction.", "filetitle": "teaser", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 7072, "image_height": 2034, "name": "amirkhanov-2011-teaser.png", "type": "image/png", "size": 2709550, "path": "Publication:amirkhanov-2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/amirkhanov-2011/amirkhanov-2011-teaser.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/amirkhanov-2011/amirkhanov-2011-teaser:thumb{{size}}.png" }, { "description": "Supplementary video material", "filetitle": "video", "main_file": true, "use_in_gallery": false, "access": "public", "preview_image_width": 928, "preview_image_height": 696, "name": "amirkhanov-2011-video.wmv", "type": "text/plain", "size": 10292954, "path": "Publication:amirkhanov-2011", "preview_name": "amirkhanov-2011-video:preview.png", "preview_type": "image/jpeg", "preview_size": 30414, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/amirkhanov-2011/amirkhanov-2011-video.wmv", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/amirkhanov-2011/amirkhanov-2011-video:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/amirkhanov-2011/", "__class": "Publication" }, { "id": "Soros_AVN_2011", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Augmented Visualization with Natural Feature Tracking", "date": "2011-12", "abstract": "Visualization systems often require large monitors or projection\r\nscreens to display complex information. Even very sophisticated\r\nsystems that exhibit complex user interfaces do usually not exploit\r\nadvanced input and output devices. One of the reasons for that is\r\nthe high cost of special hardware. This paper introduces Augmen-\r\nted Visualization, an interaction method for projection walls as well\r\nas monitors using affordable and widely available hardware such as\r\nmobile phones or tablets. The main technical challenge is the track-\r\ning of the users’ devices without any special equipment or fiducial\r\nmarkers in the working area. We propose to track natural features\r\nof the display content with the built-in camera of mobile devices.\r\nTracking the visualized scene allows pose estimation of the mobile\r\ndevices with six degrees of freedom. The position and orientation\r\ninformation is then used for advanced interaction metaphors like\r\nmagic lenses. For a group of experts who are analyzing the data in\r\nfront of the same screen, a personal augmented view of the visua-\r\nlized scene is presented, for each user on his/her personal device.\r\nThe prototype Augmented Visualization System achieves interactive\r\nframe rates and may lead to a greatly enhanced user experience.\r\nThe paper discusses the design and implementation questions and\r\nillustrates potential application scenarios.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "Teaser", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 545, "image_height": 300, "name": "Soros_AVN_2011-Teaser.jpg", "type": "image/jpeg", "size": 20571, "path": "Publication:Soros_AVN_2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Soros_AVN_2011/Soros_AVN_2011-Teaser.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Soros_AVN_2011/Soros_AVN_2011-Teaser:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 901, 488, 956, 166 ], "booktitle": "Proceedings of the 10th International Conference on Mobile and Ubiquitous Multimedia (MUM 2011) ", "date_from": "2011-12-07", "date_to": "2011-12-09", "event": "10th International Conference on Mobile and Ubiquitous Multimedia (MUM 2011) ", "isbn": "978-1-4503-1096-3", "lecturer": [ 901 ], "location": "Beijing, China", "pages_from": "4", "pages_to": "12", "publisher": "ACM", "research_areas": [], "keywords": [ "human computer interaction", "Handheld augmented reality", "natural feature tracking", "interactive visualization systems" ], "weblinks": [], "files": [ { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Soros_AVN_2011-Paper.pdf", "type": "application/pdf", "size": 7543426, "path": "Publication:Soros_AVN_2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Soros_AVN_2011/Soros_AVN_2011-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Soros_AVN_2011/Soros_AVN_2011-Paper:thumb{{size}}.png" }, { "description": "", "filetitle": "Teaser", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 545, "image_height": 300, "name": "Soros_AVN_2011-Teaser.jpg", "type": "image/jpeg", "size": 20571, "path": "Publication:Soros_AVN_2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Soros_AVN_2011/Soros_AVN_2011-Teaser.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Soros_AVN_2011/Soros_AVN_2011-Teaser:thumb{{size}}.png" }, { "description": "", "filetitle": "Video", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 1280, "preview_image_height": 720, "name": "Soros_AVN_2011-Video.avi", "type": "video/x-msvideo", "size": 36561448, "path": "Publication:Soros_AVN_2011", "preview_name": "Soros_AVN_2011-Video:preview.png", "preview_type": "image/jpeg", "preview_size": 27553, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Soros_AVN_2011/Soros_AVN_2011-Video.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Soros_AVN_2011/Soros_AVN_2011-Video:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2011/Soros_AVN_2011/Soros_AVN_2011-Video:video.mp4" } ], "projects_workgroups": [ "ViMaL" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Soros_AVN_2011/", "__class": "Publication" }, { "id": "muigg-2011-gpg", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Interactive Volume Visualization of General Polyhedral Grids", "date": "2011-12", "abstract": "This paper presents a novel framework for visualizing volumetric data specified on complex polyhedral grids, without the\r\nneed to perform any kind of a priori tetrahedralization. These grids are composed of polyhedra that often are non-convex and have\r\nan arbitrary number of faces, where the faces can be non-planar with an arbitrary number of vertices. The importance of such grids\r\nin state-of-the-art simulation packages is increasing rapidly. We propose a very compact, face-based data structure for representing\r\nsuch meshes for visualization, called two-sided face sequence lists (TSFSL), as well as an algorithm for direct GPU-based ray-casting\r\nusing this representation. The TSFSL data structure is able to represent the entire mesh topology in a 1D TSFSL data array of face\r\nrecords, which facilitates the use of efficient 1D texture accesses for visualization. In order to scale to large data sizes, we employ a\r\nmesh decomposition into bricks that can be handled independently, where each brick is then composed of its own TSFSL array. This\r\nbricking enables memory savings and performance improvements for large meshes. We illustrate the feasibility of our approach with\r\nreal-world application results, by visualizing highly complex polyhedral data from commercial state-of-the-art simulation packages.", "authors_et_al": false, "substitute": null, "main_image": { "description": "This exhaust manifold data set is defined on a polyhedral grid. The zoom-in shows the underlying mesh structure", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1330, "image_height": 790, "name": "muigg-2011-gpg-image.png", "type": "image/png", "size": 721800, "path": "Publication:muigg-2011-gpg", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 662, 226, 212, 166 ], "date_from": "2011-10-23", "date_to": "2011-10-28", "event": "IEEE VisWeek 2011", "issn": "1077 - 2626", "journal": "IEEE Transaction on Visualization and Computer Graphics", "lecturer": [ 662 ], "location": "Providence, RI, USA", "number": "12", "pages_from": "2115", "pages_to": "2124", "volume": "17", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "fast forward slides", "filetitle": "fastforward", "main_file": false, "use_in_gallery": false, "access": "public", "name": "muigg-2011-gpg-fastforward.ppt", "type": "", "size": 3621376, "path": "Publication:muigg-2011-gpg", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-fastforward.ppt", "thumb_image_sizes": [] }, { "description": "This exhaust manifold data set is defined on a polyhedral grid. The zoom-in shows the underlying mesh structure", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1330, "image_height": 790, "name": "muigg-2011-gpg-image.png", "type": "image/png", "size": 721800, "path": "Publication:muigg-2011-gpg", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": false, "use_in_gallery": false, "access": "public", "name": "muigg-2011-gpg-paper.pdf", "type": "application/pdf", "size": 464488, "path": "Publication:muigg-2011-gpg", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-paper:thumb{{size}}.png" }, { "description": "presentationslides", "filetitle": "slides", "main_file": false, "use_in_gallery": false, "access": "public", "name": "muigg-2011-gpg-slides.ppt", "type": "", "size": 11790336, "path": "Publication:muigg-2011-gpg", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-slides.ppt", "thumb_image_sizes": [] }, { "description": "video demonstration", "filetitle": "video", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 1024, "preview_image_height": 768, "name": "muigg-2011-gpg-video.avi", "type": "video/x-msvideo", "size": 15131960, "path": "Publication:muigg-2011-gpg", "preview_name": "muigg-2011-gpg-video:preview.png", "preview_type": "image/jpeg", "preview_size": 49261, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-video.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-video:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-video:video.mp4" } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/", "__class": "Publication" }, { "id": "Groeller_2011_NR", "type_id": "journalpaper_notalk", "tu_id": null, "repositum_id": null, "title": "Nodes on Ropes: A Comprehensive Data and Control Flow for Steering Ensemble Simulations", "date": "2011-12", "abstract": "Flood disasters are the most common natural risk and tremendous efforts are spent to improve their simulation and\nmanagement. However, simulation-based investigation of actions that can be taken in case of flood emergencies is rarely done.\nThis is in part due to the lack of a comprehensive framework which integrates and facilitates these efforts. In this paper, we tackle\nseveral problems which are related to steering a flood simulation. One issue is related to uncertainty. We need to account for\nuncertain knowledge about the environment, such as levee-breach locations. Furthermore, the steering process has to reveal how\nthese uncertainties in the boundary conditions affect the confidence in the simulation outcome. Another important problem is that the\nsimulation setup is often hidden in a black-box. We expose system internals and show that simulation steering can be comprehensible\nat the same time. This is important because the domain expert needs to be able to modify the simulation setup in order to include local\nknowledge and experience. In the proposed solution, users steer parameter studies through the World Lines interface to account for\ninput uncertainties. The transport of steering information to the underlying data-flow components is handled by a novel meta-flow. The\nmeta-flow is an extension to a standard data-flow network, comprising additional nodes and ropes to abstract parameter control. The\nmeta-flow has a visual representation to inform the user about which control operations happen. Finally, we present the idea to use\nthe data-flow diagram itself for visualizing steering information and simulation results. We discuss a case-study in collaboration with a\ndomain expert who proposes different actions to protect a virtual city from imminent flooding. The key to choosing the best response\nstrategy is the ability to compare different regions of the parameter space while retaining an understanding of what is happening\ninside the data-flow system.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "Image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 2126, "image_height": 1673, "name": "Groeller_2011_NR-Image.png", "type": "image/png", "size": 514334, "path": "Publication:Groeller_2011_NR", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_NR/Groeller_2011_NR-Image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_NR/Groeller_2011_NR-Image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 798, 889, 672, 978, 829, 1330, 166 ], "issn": "1077-2626", "journal": "IEEE Transactions on Visualization and Computer Graphics", "lecturer": [ 798 ], "number": "12", "pages_from": "1872", "pages_to": "1881", "volume": "17", "research_areas": [ "InfoVis" ], "keywords": [], "weblinks": [ { "href": "http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6064950", "caption": null, "description": null, "main_file": 0 } ], "files": [ { "description": null, "filetitle": "Image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 2126, "image_height": 1673, "name": "Groeller_2011_NR-Image.png", "type": "image/png", "size": 514334, "path": "Publication:Groeller_2011_NR", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_NR/Groeller_2011_NR-Image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_NR/Groeller_2011_NR-Image:thumb{{size}}.png" }, { "description": null, "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Groeller_2011_NR-Paper.pdf", "type": "application/pdf", "size": 1829746, "path": "Publication:Groeller_2011_NR", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_NR/Groeller_2011_NR-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_NR/Groeller_2011_NR-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "ViMaL" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_NR/", "__class": "Publication" }, { "id": "Groeller_2011_IVP", "type_id": "journalpaper_notalk", "tu_id": null, "repositum_id": null, "title": "Interactive Virtual Probing of 4D MRI Blood-Flow", "date": "2011-12", "abstract": "Better understanding of hemodynamics conceivably leads to improved diagnosis and prognosis of cardiovascular diseases.\r\nTherefore, an elaborate analysis of the blood-flow in heart and thoracic arteries is essential. Contemporary MRI techniques\r\nenable acquisition of quantitative time-resolved flow information, resulting in 4D velocity fields that capture the blood-flow behavior.\r\nVisual exploration of these fields provides comprehensive insight into the unsteady blood-flow behavior, and precedes a quantitative\r\nanalysis of additional blood-flow parameters. The complete inspection requires accurate segmentation of anatomical structures, encompassing\r\na time-consuming and hard-to-automate process, especially for malformed morphologies. We present a way to avoid the\r\nlaborious segmentation process in case of qualitative inspection, by introducing an interactive virtual probe. This probe is positioned\r\nsemi-automatically within the blood-flow field, and serves as a navigational object for visual exploration. The difficult task of determining\r\nposition and orientation along the view-direction is automated by a fitting approach, aligning the probe with the orientations of\r\nthe velocity field. The aligned probe provides an interactive seeding basis for various flow visualization approaches. We demonstrate\r\nillustration-inspired particles, integral lines and integral surfaces, conveying distinct characteristics of the unsteady blood-flow. Lastly,\r\nwe present the results of an evaluation with domain experts, valuing the practical use of our probe and flow visualization techniques.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 891, 647, 679, 893, 166, 979, 459 ], "issn": "1077 - 2626", "journal": "IEEE Transactions on Visualization and Computer Graphics", "lecturer": [ 891 ], "number": "12", "pages_from": "2153", "pages_to": "2162", "volume": "17", "research_areas": [], "keywords": [], "weblinks": [ { "href": "http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6064980&tag=1", "caption": null, "description": null, "main_file": 0 } ], "files": [ { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Groeller_2011_IVP-Paper.pdf", "type": "application/pdf", "size": 2761386, "path": "Publication:Groeller_2011_IVP", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_IVP/Groeller_2011_IVP-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_IVP/Groeller_2011_IVP-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_IVP/", "__class": "Publication" }, { "id": "scheiblauer-2011-chnt", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Consolidated Visualization of Enormous 3D Scan Point Clouds with Scanopy", "date": "2011-11", "abstract": "Terrestrial laser scanners are used at many excavations for documentation and inventory taking. For the documentation of the excavation Amphitheatre 1 in Bad Deutsch-Altenburg, Austria, the terrestrial laser scanner Riegl LMS Z420i was used. Overall, the entire excavation was covered by about 200 positions. With each scan position the amount of data recorded increases and this leads to performance problems in the visualization of the data. Due to the enormous number of points a consolidated representation of the entire point cloud is not possible with conventional software. The software Scanopy was developed for presenting and editing huge amounts of point data. Furthermore, it is possible to load polygonal models and display them together with point clouds in one scene. This allows an exact documentation of large archaeological excavation sites. Another application is the visualization of polygonal models of different excavation levels. The simplest visualization of point clouds on screen is a representation of the points as square rectangles. This, however, creates geometric inaccuracies, and colored point clouds are presented with sudden color changes. When the points are displayed by using semi-transparent circles the 3D points can be blended and lead to a more homogenous visual representation of the scanned objects. Thus the visual impression of the point cloud will be improved considerably. The developed software is demonstrated on the excavation mentioned above.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Point rendering with Gauss splats", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1694, "image_height": 1013, "name": "scheiblauer-2011-chnt-image.png", "type": "image/png", "size": 4275803, "path": "Publication:scheiblauer-2011-chnt", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/scheiblauer-2011-chnt/scheiblauer-2011-chnt-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/scheiblauer-2011-chnt/scheiblauer-2011-chnt-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 614, 1045 ], "booktitle": "Proceedings of the 16th International Conference on Cultural Heritage and New Technologies", "date_from": "2011-11-14", "date_to": "2011-11-16", "isbn": "978-3-200-02740-4", "lecturer": [ 614 ], "location": "Vienna, Austria", "pages_from": "242", "pages_to": "247", "research_areas": [ "Geometry" ], "keywords": [ "point rendering", "resampling", "out-of-core" ], "weblinks": [], "files": [ { "description": "Point rendering with Gauss splats", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1694, "image_height": 1013, "name": "scheiblauer-2011-chnt-image.png", "type": "image/png", "size": 4275803, "path": "Publication:scheiblauer-2011-chnt", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/scheiblauer-2011-chnt/scheiblauer-2011-chnt-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/scheiblauer-2011-chnt/scheiblauer-2011-chnt-image:thumb{{size}}.png" }, { "description": "Paper", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "scheiblauer-2011-chnt-paper.pdf", "type": "application/pdf", "size": 408490, "path": "Publication:scheiblauer-2011-chnt", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/scheiblauer-2011-chnt/scheiblauer-2011-chnt-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/scheiblauer-2011-chnt/scheiblauer-2011-chnt-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "TERAPOINTS" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/scheiblauer-2011-chnt/", "__class": "Publication" }, { "id": "bernhard-2011-bmtf", "type_id": "journalpaper_notalk", "tu_id": null, "repositum_id": null, "title": "Bi-modal Task Faciliation in a Virtual Traffic Scenario through Spatialized Sound Rendering ", "date": "2011-11", "abstract": "Audio rendering is generally used to increase the realism of Virtual Environments (VE). In addition, audio rendering may also improve the performance in specific tasks carried out in interactive applications such as games or simulators.\n\nIn this paper we investigate the effect of the quality of sound rendering on task performance in a task which is inherently vision dominated. The task is a virtual traffic gap crossing scenario with two elements: first, to discriminate crossable and uncrossable gaps in oncoming traffic, and second, to find the right timing to start crossing the street without an accident.\n\nA study was carried out with 48 participants in an immersive Virtual Environment setup with a large screen and headphones. Participants were grouped into three different conditions. In the first condition, spatialized audio rendering with head-related transfer function (HRTF) filtering was used. The second group was tested with conventional stereo rendering, and the remaining group ran the experiment in a mute condition.\n\nOur results give a clear evidence that spatialized audio improves task performance compared to the unimodal mute condition. Since all task-relevant information was in the participants' field-of-view, we conclude that an enhancement of task performance results from a bimodal advantage due to the integration of visual and auditory spatial cues.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1600, "image_height": 1200, "name": "bernhard-2011-bmtf-image.jpg", "type": "image/jpeg", "size": 231255, "path": "Publication:bernhard-2011-bmtf", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bernhard-2011-bmtf/bernhard-2011-bmtf-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/bernhard-2011-bmtf/bernhard-2011-bmtf-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 660, 838, 193 ], "issn": "1544-3558", "journal": "ACM Transactions on Applied Perception", "note": "Article No. 24", "number": "4", "pages_from": "1", "pages_to": "22", "volume": "8", "research_areas": [ "Rendering" ], "keywords": [ "bimodal task faciliation", "pedestrian safety", "virtual environments", "audio-visual perception", "head related transfer functions" ], "weblinks": [ { "href": "http://dl.acm.org/citation.cfm?id=2043606&CFID=76205769&CFTOKEN=78897554", "caption": null, "description": null, "main_file": 0 } ], "files": [ { "description": null, "filetitle": "draft", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": null, "preview_image_height": null, "name": "bernhard-2011-bmtf-draft.pdf", "type": "application/pdf", "size": 10940015, "path": "Publication:bernhard-2011-bmtf", "preview_name": "bernhard-2011-bmtf-draft:preview.png", "preview_type": "application/pdf", "preview_size": 14528250, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bernhard-2011-bmtf/bernhard-2011-bmtf-draft.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/bernhard-2011-bmtf/bernhard-2011-bmtf-draft:thumb{{size}}.png" }, { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1600, "image_height": 1200, "name": "bernhard-2011-bmtf-image.jpg", "type": "image/jpeg", "size": 231255, "path": "Publication:bernhard-2011-bmtf", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bernhard-2011-bmtf/bernhard-2011-bmtf-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/bernhard-2011-bmtf/bernhard-2011-bmtf-image:thumb{{size}}.png" } ], "projects_workgroups": [ "CROSSMOD", "GPV" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bernhard-2011-bmtf/", "__class": "Publication" }, { "id": "reisner-2011-comdm", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Consolidation of Multiple Depth Maps", "date": "2011-11", "abstract": "Consolidation of point clouds, including denoising, outlier removal and normal estimation, is an important pre-processing step for surface reconstruction techniques. We\r\npresent a consolidation framework specialized on point clouds created by multiple frames of a depth camera. An\r\nadaptive view-dependent locally optimal projection operator denoises multiple depth maps while keeping their struc\r\nture in two-dimensional grids. Depth cameras produce a systematic variation of noise scales along the depth axis.\r\nAdapting to different noise scales allows to remove noise in the point cloud and preserve well-defined details at the same time. Our framework provides additional consolidation steps for depth maps like normal estimation and outlier removal. We show how knowledge about the distribution of\r\nnoise in the input data can be effectively used for improving\r\npoint clouds.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image-desk", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1710, "image_height": 1406, "name": "reisner-2011-comdm-image-desk.png", "type": "image/png", "size": 2527631, "path": "Publication:reisner-2011-comdm", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-comdm/reisner-2011-comdm-image-desk.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-comdm/reisner-2011-comdm-image-desk:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 847, 228 ], "booktitle": "IEEE Workshop on Consumer Depth Cameras for Computer Vision (CDC4CV 2011)", "lecturer": [ 847 ], "location": "Barcelona", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image-desk", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1710, "image_height": 1406, "name": "reisner-2011-comdm-image-desk.png", "type": "image/png", "size": 2527631, "path": "Publication:reisner-2011-comdm", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-comdm/reisner-2011-comdm-image-desk.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-comdm/reisner-2011-comdm-image-desk:thumb{{size}}.png" }, { "description": "", "filetitle": "image-markers", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 2416, "image_height": 1785, "name": "reisner-2011-comdm-image-markers.png", "type": "image/png", "size": 2681070, "path": "Publication:reisner-2011-comdm", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-comdm/reisner-2011-comdm-image-markers.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-comdm/reisner-2011-comdm-image-markers:thumb{{size}}.png" }, { "description": "", "filetitle": "poster", "main_file": false, "use_in_gallery": false, "access": "public", "name": "reisner-2011-comdm-poster.pdf", "type": "application/pdf", "size": 3374994, "path": "Publication:reisner-2011-comdm", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-comdm/reisner-2011-comdm-poster.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-comdm/reisner-2011-comdm-poster:thumb{{size}}.png" }, { "description": "", "filetitle": "preprint", "main_file": false, "use_in_gallery": false, "access": "public", "name": "reisner-2011-comdm-preprint.pdf", "type": "application/pdf", "size": 4910482, "path": "Publication:reisner-2011-comdm", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-comdm/reisner-2011-comdm-preprint.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-comdm/reisner-2011-comdm-preprint:thumb{{size}}.png" } ], "projects_workgroups": [ "VRVis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-comdm/", "__class": "Publication" }, { "id": "Gurbat_2011_SBS", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Sketch-Based Steering in Visdom", "date": "2011-11", "abstract": "Natural phenomena like earthquakes or floods cannot be avoided or controlled by humans\r\nbut ignoring them can be fatal. In order to understand their characteristics and\r\nbehavior computer simulations can be used. The gained knowledge is used to find\r\nstrategies and countermeasures to minimize the damage caused by such disasters.\r\nVisdom is a modular integrated visualization system which is developed to support the\r\nanalysis of flood simulations. It provides the ability to test different decisions made\r\nby the user for example the establishment of barrier arrangements. These alternative\r\nscenarios can be visualized and analyzed in order to find the solution which minimizes\r\ndamage in the vicinity. For modifying the flood, the simulation parameters have to be\r\nvaried. In Visdom, this has to be done by inserting numeric values into textfields or\r\nusing sliders. In most cases, the system is intended to be used in time-critical situations\r\nwhere fast interaction and testing is required. Therefore a sketch-based interface\r\nis introduced into Visdom which should simplify and accelerate the modification of simulation\r\nparameters. This kind of interaction increases the productivity and efficiency of\r\nthe whole work-flow due to its intuitive and straightforward usage.\r\nSince Visdom is based on a modular data-flow system, the new functionality is implemented\r\nwithin a new node. The so-called Spline Node provides methods to create\r\nand manipulate a spline. It requires the drawn user input points which are captured by\r\na view node. Due to the fact that Visdom is based on the data-flow concept, a new\r\nmechanism called Modular Interactors has to be introduced to enable interaction communication\r\nbetween nodes especially upstream. In order to support the user during the\r\nsketching process the system provides visual feedback. The sketched stroke is represented\r\nusing a tubular geometry which is directly visualized in the 3D view.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "Thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Gurbat_2011_SBS-Thesis.pdf", "type": "application/pdf", "size": 3800586, "path": "Publication:Gurbat_2011_SBS", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gurbat_2011_SBS/Gurbat_2011_SBS-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gurbat_2011_SBS/Gurbat_2011_SBS-Thesis:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 1061 ], "supervisor": [ 166, 798 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "Thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Gurbat_2011_SBS-Thesis.pdf", "type": "application/pdf", "size": 3800586, "path": "Publication:Gurbat_2011_SBS", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gurbat_2011_SBS/Gurbat_2011_SBS-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gurbat_2011_SBS/Gurbat_2011_SBS-Thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gurbat_2011_SBS/", "__class": "Publication" }, { "id": "KUE11", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "BRDF approximation and estimation for Augmented Reality", "date": "2011-10", "abstract": "In Augmented Reality applications it is important to have a good description of the surfaces of real objects if a consistent shading between real and virtual object is required. If such a description of a surface is not vailable it has to be estimated or approximated. In our paper we will present certain methods that deal\nwith real-time bi-directional reflectance distribution function\n(BRDF) approximation in augmented reality. Of course an important thing to discuss is whether the applications we present all work in real-time and compute good (and real)looking results.\nThere are different methods on how to achieve this goal. All of the methods we are going to present work via image based lighting and some require a 3D polygonal mesh representation\nof the object whose BRDF shall be approximated. Some methods estimate the BRDF parameters via error values and\nprovide results at each iteration.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 841, 736, 237 ], "booktitle": "15th International Conference on System Theory, Control and Computing", "date_from": "2011-10-14", "date_to": "2011-10-16", "lecturer": [ 841 ], "location": "Sinaia, Romania", "organization": "\"Gheorghe Asachi\" Technical University of Iasi, Faculty of Automatic Control and Computer Engineering", "pages_from": "318", "pages_to": "324", "research_areas": [ "Rendering" ], "keywords": [ "Mixed Reality", "BRDF Estimation" ], "weblinks": [], "files": [ { "description": null, "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "KUE11-Paper.pdf", "type": "application/pdf", "size": 411981, "path": "Publication:KUE11", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/KUE11/KUE11-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/KUE11/KUE11-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "RESHADE" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/KUE11/", "__class": "Publication" }, { "id": "Tanzmeister_2011_I3D", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Interactive 3D Reconstruction and BRDF Estimation for Mixed Reality Environments", "date": "2011-10", "abstract": "In mixed reality environments virtual content typically looks very artificial. One reason for that\r\nis because there is no consistent shading between the virtual and the real objects. Two examples\r\nare shadows and indirect illumination between the artificial and the real scene elements, which\r\nrequire to have information about the real world’s geometry and its materials respectively.\r\nIn mixed reality interaction with real objects is a key feature. Integrating consistent shading\r\nin such a system means that the system at all times needs an up-to-date model of the scene’s\r\ngeometry, its lighting and its material characteristics. The information is usually obtained as\r\na manual pre-processing step, which is a tedious, time-consuming task and has to be re-done\r\nwhenever a scene element that is not tracked changes. This poses strong limits to the widespread\r\nuse of such a technique and one would like to have it done automatically.\r\nHowever, the automatic estimation of material characteristics of real objects using color\r\nimages has always been an offline task in the literature having processing times from around 30\r\nminutes up to several hours. In this work an interactive BRDF estimation technique is proposed,\r\nwhich uses the parallel power of current GPUs speeding up the running time to under half a\r\nsecond. One reason for the speed-up was a novel GPU K-Means implementation using MIP\r\nmaps to calculate the new cluster centers on the GPU, which is often done on the CPU. The\r\n3D geometry is also reconstructed in our technique since it is needed for indirect illumination\r\nand occlusion. We use the Microsoft Kinect sensor to acquire both, the geometry and the color\r\nimages and capture the lighting environment using a fish-eye lens camera. With the algorithm\r\npresented in this thesis we have shown that real-time results are possible opening up its use in\r\nmixed reality systems in order to improve the appearance of virtual content.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 920 ], "date_start": "2011-04-08", "matrikelnr": "0625380", "supervisor": [ 736, 193 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "Poster", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Tanzmeister_2011_I3D-Poster.pdf", "type": "application/pdf", "size": 4918597, "path": "Publication:Tanzmeister_2011_I3D", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Tanzmeister_2011_I3D/Tanzmeister_2011_I3D-Poster.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Tanzmeister_2011_I3D/Tanzmeister_2011_I3D-Poster:thumb{{size}}.png" }, { "description": "", "filetitle": "Thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Tanzmeister_2011_I3D-Thesis.pdf", "type": "application/pdf", "size": 19870446, "path": "Publication:Tanzmeister_2011_I3D", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Tanzmeister_2011_I3D/Tanzmeister_2011_I3D-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Tanzmeister_2011_I3D/Tanzmeister_2011_I3D-Thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Tanzmeister_2011_I3D/", "__class": "Publication" }, { "id": "knecht-2011-CBCM", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Adaptive Camera-Based Color Mapping For Mixed-Reality Applications", "date": "2011-10", "abstract": "We present a novel adaptive color mapping method for virtual objects in mixed-reality environments. In several mixed-reality applications, added virtual objects should be visually indistinguishable from real objects. Recent mixed-reality methods use global-illumination algorithms to approach this goal. However, simulating the light distribution is not enough for visually plausible images. Since the observing camera has its very own transfer function from real-world radiance values to RGB colors, virtual objects look artificial just because their rendered colors do not match with those of the camera.\n\nOur approach combines an on-line camera characterization method with a heuristic to map colors of virtual objects to colors as they would be seen by the observing camera. Previous tone-mapping functions were not designed for use in mixed-reality systems and thus did not take the camera-specific behavior into account. In contrast, our method takes the camera into account and thus can also handle changes of its parameters during runtime. The results show that virtual objects look visually more plausible than by just applying tone-mapping operators.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Shows color adaption of virtual book and colorchart on the left", "filetitle": "Image 1", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1024, "image_height": 767, "name": "knecht-2011-CBCM-Image 1.jpg", "type": "image/jpeg", "size": 561780, "path": "Publication:knecht-2011-CBCM", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/knecht-2011-CBCM/knecht-2011-CBCM-Image 1.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/knecht-2011-CBCM/knecht-2011-CBCM-Image 1:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 736, 237, 190, 193 ], "booktitle": "Proceedings of the 2011 IEEE International Symposium on Mixed and Augmented Reality (ISMAR 2011)", "date_from": "2011-10-26", "date_to": "2011-10-29", "isbn": "978-1-4577-2183-0 ", "location": "Basel, Switzerland", "note": "E-ISBN: 978-1-4577-2184-7", "pages_from": "165", "pages_to": "168", "publisher": "IEEE/IET Electronic Library (IEL), IEEE-Wiley eBooks Library, VDE VERLAG Conference Proceedings", "research_areas": [ "Rendering" ], "keywords": [ "Color Matching", "Differential Rendering", "Mixed Reality", "Tone Mapping" ], "weblinks": [], "files": { "0": { "description": "Shows color adaption of virtual book and colorchart on the left", "filetitle": "Image 1", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1024, "image_height": 767, "name": "knecht-2011-CBCM-Image 1.jpg", "type": "image/jpeg", "size": 561780, "path": "Publication:knecht-2011-CBCM", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/knecht-2011-CBCM/knecht-2011-CBCM-Image 1.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/knecht-2011-CBCM/knecht-2011-CBCM-Image 1:thumb{{size}}.png" }, "1": { "description": "Shows color adaption of virtual book and colorchart on the left", "filetitle": "Image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1024, "image_height": 767, "name": "knecht-2011-CBCM-Image.jpg", "type": "image/jpeg", "size": 301091, "path": "Publication:knecht-2011-CBCM", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/knecht-2011-CBCM/knecht-2011-CBCM-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/knecht-2011-CBCM/knecht-2011-CBCM-Image:thumb{{size}}.png" }, "2": { "description": "Conference Paper", "filetitle": "Preprint", "main_file": true, "use_in_gallery": false, "access": "public", "name": "knecht-2011-CBCM-Preprint.pdf", "type": "application/pdf", "size": 25284280, "path": "Publication:knecht-2011-CBCM", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/knecht-2011-CBCM/knecht-2011-CBCM-Preprint.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/knecht-2011-CBCM/knecht-2011-CBCM-Preprint:thumb{{size}}.png" }, "4": { "description": "Video results", "filetitle": "Video", "main_file": true, "use_in_gallery": false, "access": "public", "preview_image_width": 640, "preview_image_height": 480, "name": "knecht-2011-CBCM-Video.avi", "type": "video/x-msvideo", "size": 36674560, "path": "Publication:knecht-2011-CBCM", "preview_name": "knecht-2011-CBCM-Video:preview.png", "preview_type": "image/jpeg", "preview_size": 5344, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/knecht-2011-CBCM/knecht-2011-CBCM-Video.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/knecht-2011-CBCM/knecht-2011-CBCM-Video:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2011/knecht-2011-CBCM/knecht-2011-CBCM-Video:video.mp4" } }, "projects_workgroups": [ "RESHADE" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/knecht-2011-CBCM/", "__class": "Publication" }, { "id": "haidacher-2011-VAM", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Volume Analysis Using Multimodal Surface Similarity", "date": "2011-10", "abstract": "The combination of volume data acquired by multiple modalities has been recognized as an important but challenging\r\ntask. Modalities often differ in the structures they can delineate and their joint information can be used to extend the classification\r\nspace. However, they frequently exhibit differing types of artifacts which makes the process of exploiting the additional information\r\nnon-trivial. In this paper, we present a framework based on an information-theoretic measure of isosurface similarity between different\r\nmodalities to overcome these problems. The resulting similarity space provides a concise overview of the differences between the\r\ntwo modalities, and also serves as the basis for an improved selection of features. Multimodal classification is expressed in terms of\r\nsimilarities and dissimilarities between the isosurfaces of individual modalities, instead of data value combinations. We demonstrate\r\nthat our approach can be used to robustly extract features in applications such as dual energy computed tomography of parts in\r\nindustrial manufacturing.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Dual-energy CT data visualized using multimodal similarity-based classification", "filetitle": "Teaser", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1500, "image_height": 1417, "name": "haidacher-2011-VAM-Teaser.jpg", "type": "image/jpeg", "size": 418896, "path": "Publication:haidacher-2011-VAM", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-VAM/haidacher-2011-VAM-Teaser.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-VAM/haidacher-2011-VAM-Teaser:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 597, 161, 166 ], "date_from": "2011-10-23", "date_to": "2011-10-28", "event": "IEEE Visualization 2011", "journal": "IEEE Transactions on Visualization and Computer Graphics", "lecturer": [ 597 ], "location": "Providence, Rhode Island, USA", "number": "12", "pages_from": "1969", "pages_to": "1978", "volume": "17", "research_areas": [], "keywords": [ "surface similarity", "volume visualization", "multimodal data" ], "weblinks": [], "files": [ { "description": "Video of the Fast Forward Presentation", "filetitle": "FastForward", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 1280, "preview_image_height": 720, "name": "haidacher-2011-VAM-FastForward.avi", "type": "video/x-msvideo", "size": 2962030, "path": "Publication:haidacher-2011-VAM", "preview_name": "haidacher-2011-VAM-FastForward:preview.png", "preview_type": "image/jpeg", "preview_size": 33557, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-VAM/haidacher-2011-VAM-FastForward.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-VAM/haidacher-2011-VAM-FastForward:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-VAM/haidacher-2011-VAM-FastForward:video.mp4" }, { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "haidacher-2011-VAM-Paper.pdf", "type": "application/pdf", "size": 15432630, "path": "Publication:haidacher-2011-VAM", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-VAM/haidacher-2011-VAM-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-VAM/haidacher-2011-VAM-Paper:thumb{{size}}.png" }, { "description": "VisWeek 2011 Presentation Slides", "filetitle": "Presentation", "main_file": false, "use_in_gallery": false, "access": "public", "name": "haidacher-2011-VAM-Presentation.pdf", "type": "application/pdf", "size": 12638148, "path": "Publication:haidacher-2011-VAM", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-VAM/haidacher-2011-VAM-Presentation.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-VAM/haidacher-2011-VAM-Presentation:thumb{{size}}.png" }, { "description": "Dual-energy CT data visualized using multimodal similarity-based classification", "filetitle": "Teaser", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1500, "image_height": 1417, "name": "haidacher-2011-VAM-Teaser.jpg", "type": "image/jpeg", "size": 418896, "path": "Publication:haidacher-2011-VAM", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-VAM/haidacher-2011-VAM-Teaser.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-VAM/haidacher-2011-VAM-Teaser:thumb{{size}}.png" }, { "description": "Video demonstration of some of the key aspects of our approach", "filetitle": "Video", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 1024, "preview_image_height": 912, "name": "haidacher-2011-VAM-Video.avi", "type": "video/x-msvideo", "size": 42124998, "path": "Publication:haidacher-2011-VAM", "preview_name": "haidacher-2011-VAM-Video:preview.png", "preview_type": "image/jpeg", "preview_size": 44314, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-VAM/haidacher-2011-VAM-Video.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-VAM/haidacher-2011-VAM-Video:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-VAM/haidacher-2011-VAM-Video:video.mp4" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-VAM/", "__class": "Publication" }, { "id": "Gschwantner_2011_AMQ", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Advanced Measurement and Quantification of Industrial CT Data", "date": "2011-10", "abstract": "Non–destructive testing (NDT) is a vital part in today’s industrial production and research processes.\r\nSuch testing procedures often use Computed Tomography (CT) in order to get insights\r\nof the inner parts of an object. During the analysis of different objects, certain features can be\r\nautomatically segmented and quantified in the CT dataset. However, due to various effects during\r\nthe acquisition of the data, the original boundaries of two materials within the objects are\r\nnot accurately represented in the dataset.\r\nThis thesis describes a method to reconstruct these boundaries for automatically segmented features\r\non a subvoxel level of the dataset. They are searched along the gradient of the data, using\r\nan edge–detection approach commonly used in image processing. The result is then represented\r\nas a distance field and further quantified through over–sampling and measuring.\r\nFor a variety of datasets it is shown that these reconstructed boundaries are indeed providing\r\na more accurate representation of the original segmented region. Further comparisons are made\r\nwith a method that simply tries to improve the visual appearance through smoothing.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "Image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1280, "image_height": 1436, "name": "Gschwantner_2011_AMQ-Image.jpg", "type": "image/jpeg", "size": 343576, "path": "Publication:Gschwantner_2011_AMQ", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gschwantner_2011_AMQ/Gschwantner_2011_AMQ-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gschwantner_2011_AMQ/Gschwantner_2011_AMQ-Image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 947 ], "supervisor": [ 166, 226, 775 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "Image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1280, "image_height": 1436, "name": "Gschwantner_2011_AMQ-Image.jpg", "type": "image/jpeg", "size": 343576, "path": "Publication:Gschwantner_2011_AMQ", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gschwantner_2011_AMQ/Gschwantner_2011_AMQ-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gschwantner_2011_AMQ/Gschwantner_2011_AMQ-Image:thumb{{size}}.png" }, { "description": "", "filetitle": "Thesis", "main_file": true, "use_in_gallery": true, "access": "public", "name": "Gschwantner_2011_AMQ-Thesis.pdf", "type": "application/pdf", "size": 23641769, "path": "Publication:Gschwantner_2011_AMQ", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gschwantner_2011_AMQ/Gschwantner_2011_AMQ-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gschwantner_2011_AMQ/Gschwantner_2011_AMQ-Thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gschwantner_2011_AMQ/", "__class": "Publication" }, { "id": "Groeller_2011_NSM", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Needle-Stability Maps for Brain-Tumor Biopsies", "date": "2011-10", "abstract": "Minimally invasive surgical procedures like\r\nbiopsies require the insertion of a needle to reach a specific\r\ntissue from where samples are taken. This process is affected by\r\na number of errors that can lead to a different needle pathway\r\nthan originally planned. In the case of brain-tumor biopsies,\r\nthese errors can be caused by the brain shifting when the skull\r\nis drilled, measurement errors due to the physical framework\r\nthat supports the biopsy needle or some other human errors.\r\nTo provide support for preoperative planning, we introduce the\r\nconcept of a biopsy-needle stability-map. This map provides\r\ninformation on how stable a biopsy-needle pathway is. We also\r\nintroduce an algorithm for finding the reachable points on the\r\ntumor border from one specific entry point. A technique for\r\nautomatically selecting the needle pathway that offers the\r\nbiggest minimal distance to any blood vessel is also presented.\r\nA 3D representation of the regions of interest (tumor, blood\r\nvessels) together with the needle pathway and the reachable\r\npoints of the tumor has also been implemented. The resulting\r\nstability map visually represents, using color-coding, how close\r\nto any blood vessel the pathways surrounding the main one are.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 903, 850, 166 ], "booktitle": "Proceedings of 15th International Conference on System Theory, Control and computing (ICSTCC 2011)", "date_from": "2011-10-14", "date_to": "2011-10-16", "editor": "Editura Universitaria Craiova (EUC)", "issn": "2068-0465", "lecturer": [ 903 ], "location": "Sinaia, Romania", "pages_from": "259", "pages_to": "263", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Groeller_2011_NSM-Paper.pdf", "type": "application/pdf", "size": 254409, "path": "Publication:Groeller_2011_NSM", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_NSM/Groeller_2011_NSM-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_NSM/Groeller_2011_NSM-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_NSM/", "__class": "Publication" }, { "id": "Groeller_2011_GBC", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Gradient-based Classification and Representation of Features from Volume Data", "date": "2011-10", "abstract": "The extraction and representation of information\r\nfrom volume data are important research avenues in\r\ncomputer-based visualization. The interpretation of three- or\r\nmulti-dimensional data from various scanning devices is\r\nimportant to medical imaging, diagnosis and treatment,\r\nreliability and sustainability analyses in various industrial\r\nbranches, and, in more general terms, information\r\nvisualization. In this paper, we present several approaches for\r\nthe classification and representation of relevant information\r\nfrom volume data sets. The techniques are based on the\r\ngradient vector, a property directly derived from the original\r\nvolume data. We show how this property can be computed and\r\nsubsequently used for classification through gradient-based\r\none- and multi-dimensional transfer functions, as well as for\r\nthe enhancement of surface features. The described techniques\r\nare illustrated through images generated using our volume\r\nrendering framework, from Computed Tomography (CT) and\r\nMagnetic Resonance Imaging (MRI) data sets. The resulting\r\nimages show how gradient-based techniques are suited for\r\nimproved volume classification and the better extraction of\r\nmeaningful information.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 737, 850, 166 ], "booktitle": "Proceedings of 15th International Conference on System Theory, Control and computing (ICSTCC 2011)", "date_from": "2011-10-14", "date_to": "2011-10-16", "editor": "Editura Universitaria Craiova (EUC)", "issn": "2068-0465", "lecturer": [ 737 ], "location": "Sinaia, Romania", "pages_from": "243", "pages_to": "248", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Groeller_2011_GBC-Paper.pdf", "type": "application/pdf", "size": 214067, "path": "Publication:Groeller_2011_GBC", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_GBC/Groeller_2011_GBC-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_GBC/Groeller_2011_GBC-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_GBC/", "__class": "Publication" }, { "id": "Basch_2011_ATA", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Animated Transitions Across Multiple Dimensions for Volumetric Data", "date": "2011-10", "abstract": "There are several techniques, that can be used to visualize volumetric data. A data set\r\ncan be illustrated using slicing (depicting arbitrary slices through the volume), direct\r\nvolume rendering (DVR), or in a more abstract way, histograms and scatter plots. Usually\r\nthese different methods of visualization are being applied separately. To recognize\r\ncoherencies between the representations, methods based on Linking and Brushing can\r\nbe utilized. These methods highlight voxels in one view, as soon as they are selected in\r\nanother one. Coming from scientific visualization, these methods are very useful, when\r\nselecting voxels from 2D data representations, like scatter plots. Of course they are\r\nless useful, when trying to select voxels directly from the volume. Therefore this thesis\r\nexplored methods, that are not based on selection and highlighting. Rather, the correlation\r\nbetween different representations is shown by moving voxels between different\r\nvolume representations. As a basis, methods like staggered animation, acceleration, and\r\ndeceleration were adopted, which had been previously used in the graphical analysis of\r\nstatistical data.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "Image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 656, "image_height": 633, "name": "Basch_2011_ATA-Image.jpg", "type": "image/jpeg", "size": 41465, "path": "Publication:Basch_2011_ATA", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Basch_2011_ATA/Basch_2011_ATA-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Basch_2011_ATA/Basch_2011_ATA-Image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 945 ], "supervisor": [ 166, 488 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "Amination", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 992, "preview_image_height": 980, "name": "Basch_2011_ATA-Amination.avi", "type": "video/x-msvideo", "size": 3589632, "path": "Publication:Basch_2011_ATA", "preview_name": "Basch_2011_ATA-Amination:preview.png", "preview_type": "image/jpeg", "preview_size": 41003, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Basch_2011_ATA/Basch_2011_ATA-Amination.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Basch_2011_ATA/Basch_2011_ATA-Amination:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2011/Basch_2011_ATA/Basch_2011_ATA-Amination:video.mp4" }, { "description": "", "filetitle": "Image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 656, "image_height": 633, "name": "Basch_2011_ATA-Image.jpg", "type": "image/jpeg", "size": 41465, "path": "Publication:Basch_2011_ATA", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Basch_2011_ATA/Basch_2011_ATA-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Basch_2011_ATA/Basch_2011_ATA-Image:thumb{{size}}.png" }, { "description": "", "filetitle": "Thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Basch_2011_ATA-Thesis.pdf", "type": "application/pdf", "size": 3495591, "path": "Publication:Basch_2011_ATA", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Basch_2011_ATA/Basch_2011_ATA-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Basch_2011_ATA/Basch_2011_ATA-Thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Basch_2011_ATA/", "__class": "Publication" }, { "id": "Gavrilescu_2011_VGP", "type_id": "phdthesis", "tu_id": null, "repositum_id": null, "title": "Visualization and Graphical Processing of Volume Data", "date": "2011-10", "abstract": "The extraction and visualization of information from volume data constitute important research avenues in computer graphics and imaging. The rapid development of GPUs with increasing computational power has made it possible to generate intuitive, three-dimensional representations of data sets, which can be tweaked and manipulated interactively. \r\n\r\nThis thesis presents various techniques developed within the field of volume graphics. These have wide applicability in the generation of meaningful images from mainly CT and MRI data sets. The work addresses multiple aspects of volume visualization and rendering, such as the representation, classification and in-depth graphical analysis of the information contained within volume data. Initially, we present generic information on the nature of volume data, the mathematical and physical models behind volume rendering, as well as the rendering algorithms used within our prototyping framework for the rendering of images. Subsequently, we address the problem of volume classification, where we explore the use of various types of transfer functions. These operate on voxel properties such as the gradient, curvature or visibility, allowing for the isolation of increasingly complex and problematic features. We provide alternative, more computationally-efficient ways of approximating some of these properties and show how they can be used for classification purposes. We also provide an effective way of specifying multidimensional transfer functions from 1D components, thus increasing the flexibility and expanding the potential of the classification process.\r\n\r\nAnother part of the thesis deals with cardiac MRI data. Specifically, we develop a tool for the visual inspection of parameters which influence the status and functionality of the left ventricle. The considered parameters are the thickness and thickening of the myocardial wall, the moment of maximum thickness and the average speed of the wall during a cardiac cycle. Starting from segmentation contours which outline the epicardium and endocardium, we construct surfaces and use these to visualize the distribution of parameter values using color coding. The technique allows for information from multiple slices, over multiple phases and stress levels to be represented on a single 3D geometry, therefore facilitating the analysis of multidimensional data sets comprising a large number of slices. The values of the cardiac parameters are depicted in an intuitive manner, making them easily accessible to both medical staff and patients with no medical training. \r\nIn the last part of the thesis we develop a method for the analysis of parameters involved in the volume rendering pipeline. The technique involves sampling the parameters across their domains, rendering images for each sample, and computing the differences among these images. The resulting values characterize the behavior and stability of the parameters across their domains. These values are further used to augment various user interfaces, such as sliders or transfer function specification widgets. The newly-modified interfaces use color coding, graphs, arrows and other info-vis techniques to show the potential changes induced by the parameters in images resulting from volume rendering, thus allowing users to make better-informed decisions when adjusting parameter values. \r\n", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "Image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 300, "image_height": 300, "name": "Gavrilescu_2011_VGP-Image.jpg", "type": "image/jpeg", "size": 39068, "path": "Publication:Gavrilescu_2011_VGP", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gavrilescu_2011_VGP/Gavrilescu_2011_VGP-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gavrilescu_2011_VGP/Gavrilescu_2011_VGP-Image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 737 ], "date_end": "2011-10", "date_start": "2008-10", "reviewer_1": [ 850, 166 ], "reviewer_2": [ 1314, 1315, 1316 ], "rigorosum": "2011-10-17", "supervisor": [ 850 ], "research_areas": [], "keywords": [ "parameter stability", "left ventricle", "cardiac parameters", "feature enhancement", "transfer function", "volume rendering", "visualization", "user interface" ], "weblinks": [], "files": [ { "description": "", "filetitle": "Image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 300, "image_height": 300, "name": "Gavrilescu_2011_VGP-Image.jpg", "type": "image/jpeg", "size": 39068, "path": "Publication:Gavrilescu_2011_VGP", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gavrilescu_2011_VGP/Gavrilescu_2011_VGP-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gavrilescu_2011_VGP/Gavrilescu_2011_VGP-Image:thumb{{size}}.png" }, { "description": "", "filetitle": "Thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Gavrilescu_2011_VGP-Thesis.pdf", "type": "application/pdf", "size": 8750137, "path": "Publication:Gavrilescu_2011_VGP", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gavrilescu_2011_VGP/Gavrilescu_2011_VGP-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gavrilescu_2011_VGP/Gavrilescu_2011_VGP-Thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gavrilescu_2011_VGP/", "__class": "Publication" }, { "id": "mayer_2011_cipa", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Virtual Texturing in the Documentation of Cultural Heritage", "date": "2011-09", "abstract": "In the last decade the documentation of cultural heritage by means of laser range scanning and photogrammetric techniques has gained ever more importance. The amount of data collected by these means may be huge, and adequate presentation of 3D documented cultural heritage is still a challenge. For small and limited projects consisting of only a few range scans, the software provided with the laser scanner can be used for viewing and presenting the data. Large projects, consisting of hundreds of scan positions as well as projects where more and more data are collected over time, still have to deal with a massive reduction of the 3D data for presentation. Public demonstrations in museums, as for example shown by the Digital Michelangelo project, are already state of the art. The combination of huge point-base models and mesh models with high resolution textures in one viewer, the first type of models resulting from the data of laser range scans and the second type of models resulting from a photogrammetric reconstruction process, is still not available. Currently viewers are mostly limited to show models that are based on only one geometric primitive – either points or polygons – at once.\r\nIn the FWF funded START project “The Domitilla Catacomb in Rome. Archaeology, Architecture and Art History of a Late Roman Cemetery” – which is running for 5 years now – 3D point data was collected for the geometrical documentation of the vast gallery system of the Domitilla Catacomb, resulting in point data of some 2 billion (10^9) point samples. Furthermore high quality textured mesh models of the nearly 90 late Roman / early Christian paintings were generated with photogrammetric tools. In close cooperation with the Institute of Computer Graphics and Algorithms of the Vienna University of Technology the point cloud viewer Scanopy was improved for the combined presentation of huge point clouds and high quality textured mesh models in the same viewer. Our viewer is already capable of rendering huge point clouds, so for this a method to manage the vast amount of textures had to be found. Therefore we integrated a virtual texturing algorithm, which allows using the original photographs of the paintings taken on site to be mapped to the mesh models, resulting in a high quality texture for all mesh models. The photographs have a resolution of 11 Megapixels. Due to shortcomings in the programs used in the photogrammetric processing pipeline we scaled down the photographs to a 7.3 Megapixel resolution. Currently 608 of these images are used for texturing 29 mesh models. The work on the mesh models is still ongoing, and when all mesh models will be completed, we will use some 2000 images for texturing about 90 mesh models. These virtually textured models can show the details of each painting in the Domitilla Catacomb. When used in a virtual walkthrough the paintings in the catacomb can be presented to a broad audience under best lighting conditions, even the paintings normally not accessible by the public.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Virtual texturing render pipeline", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 651, "image_height": 1075, "name": "mayer_2011_cipa-image.png", "type": "image/png", "size": 215911, "path": "Publication:mayer_2011_cipa", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/mayer_2011_cipa/mayer_2011_cipa-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/mayer_2011_cipa/mayer_2011_cipa-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 943, 614, 796 ], "date_from": "2011-09-12", "date_to": "2011-09-16", "event": "XXIIIrd International CIPA Symposium", "issn": "1802-2669", "journal": "Geoinformatics FCE CTU", "lecturer": [ 943, 614 ], "location": "Czech Technical University in Prague", "volume": "7", "research_areas": [], "keywords": [ "virtual texturing", "out-of-core", "streaming", "point clouds" ], "weblinks": [], "files": { "0": { "description": "Virtual texturing render pipeline", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 651, "image_height": 1075, "name": "mayer_2011_cipa-image.png", "type": "image/png", "size": 215911, "path": "Publication:mayer_2011_cipa", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/mayer_2011_cipa/mayer_2011_cipa-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/mayer_2011_cipa/mayer_2011_cipa-image:thumb{{size}}.png" }, "1": { "description": "The Domitilla images are not included due to copyright reasons.", "filetitle": "paper draft", "main_file": true, "use_in_gallery": false, "access": "public", "name": "mayer_2011_cipa-paper draft.pdf", "type": "application/pdf", "size": 526442, "path": "Publication:mayer_2011_cipa", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/mayer_2011_cipa/mayer_2011_cipa-paper draft.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/mayer_2011_cipa/mayer_2011_cipa-paper draft:thumb{{size}}.png" }, "3": { "description": "The Domitilla images are not included due to copyright reasons.", "filetitle": "slides draft", "main_file": false, "use_in_gallery": false, "access": "public", "name": "mayer_2011_cipa-slides draft.pptx", "type": "application/zip", "size": 5600582, "path": "Publication:mayer_2011_cipa", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/mayer_2011_cipa/mayer_2011_cipa-slides draft.pptx", "thumb_image_sizes": [] } }, "projects_workgroups": [ "TERAPOINTS" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/mayer_2011_cipa/", "__class": "Publication" }, { "id": "Stingl_2011_RHS", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Robust Hard Shadows", "date": "2011-09", "abstract": "The generation of shadows in large virtual environments for real-time rendering applications like\r\ne.g. video games is still a great challenge for computer graphics. In the past few years shadow\r\nmapping and its variants have become widely accepted as appropriate methods for shadow creation,\r\nwhich resulted in large number of advanced shadow mapping techniques that have been\r\nintroduced recently. For this reason, it sometimes can be difficult for developers to choose a\r\nsuitable method based on the certain given scenarios.\r\nThis thesis focuses on an analysis of some common fully hardware-accelerated shadow mapping\r\ntechniques and their capabilities to combine them with each other. We present an interactive\r\nframework that allows the user to experiment with the chosen methods and to visualize\r\nalmost every interesting aspect of the shadow creation process for arbitrary scenes. It offers the\r\nopportunity to generate the shadows by using multiple shadow maps, sample redistribution or\r\nboth and provides most possible flexibility in terms of various adjustable parameters. Furthermore,\r\nit includes a feature to analyze the final results from different points of view, which should\r\nhelp developers to find the best suited algorithm for the given scene.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 780 ], "date_start": "2009-10-08", "matrikelnr": "0226290", "supervisor": [ 193, 452 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "poster", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Stingl_2011_RHS-poster.pdf", "type": "application/pdf", "size": 10936424, "path": "Publication:Stingl_2011_RHS", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Stingl_2011_RHS/Stingl_2011_RHS-poster.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Stingl_2011_RHS/Stingl_2011_RHS-poster:thumb{{size}}.png" }, { "description": "", "filetitle": "thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Stingl_2011_RHS-thesis.pdf", "type": "application/pdf", "size": 14162201, "path": "Publication:Stingl_2011_RHS", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Stingl_2011_RHS/Stingl_2011_RHS-thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Stingl_2011_RHS/Stingl_2011_RHS-thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Stingl_2011_RHS/", "__class": "Publication" }, { "id": "Niederreiter_2011_SM", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Spectral Mipmapping", "date": "2011-09", "abstract": "Full-spectral color rendering capability of global illumination renderers\r\nis still in need of improvement, particularly regarding performance,\r\nwhich is a reason why many modelling programs for global illumination\r\nare focused on three-component based color representation (e.g.\r\nRGB). Full-spectral color representations are the basis for realistic\r\ncolor appearance in realistic image synthesis. Currently, if compared\r\nto common three-component rendering, the major disadvantage of fullspectral\r\nrendering comes from higher computation costs because of\r\nthe greater amount of processed information. This thesis investigates\r\npromising approaches of spectral color representation in the context\r\nof a multi-level color rendering model called Spectral Mipmapping,\r\nfocused on the trade-off between time-efficiency and resulting image\r\nquality in terms of perceived color difference. A test implementation\r\nin a basic ray tracing renderer is used to evaluate results and make suggestions\r\nconcerning appropriate code design optimizations and spectral\r\nsampling strategies. The influence of compiler optimization and\r\nvector instruction use (based on SSE instructions) is discussed.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "Image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 640, "image_height": 640, "name": "Niederreiter_2011_SM-Image.png", "type": "image/png", "size": 278120, "path": "Publication:Niederreiter_2011_SM", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Niederreiter_2011_SM/Niederreiter_2011_SM-Image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Niederreiter_2011_SM/Niederreiter_2011_SM-Image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 792 ], "supervisor": [ 190, 567 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "Image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 640, "image_height": 640, "name": "Niederreiter_2011_SM-Image.png", "type": "image/png", "size": 278120, "path": "Publication:Niederreiter_2011_SM", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Niederreiter_2011_SM/Niederreiter_2011_SM-Image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Niederreiter_2011_SM/Niederreiter_2011_SM-Image:thumb{{size}}.png" }, { "description": "", "filetitle": "Poster", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Niederreiter_2011_SM-Poster.pdf", "type": "application/pdf", "size": 560932, "path": "Publication:Niederreiter_2011_SM", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Niederreiter_2011_SM/Niederreiter_2011_SM-Poster.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Niederreiter_2011_SM/Niederreiter_2011_SM-Poster:thumb{{size}}.png" }, { "description": "", "filetitle": "Thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Niederreiter_2011_SM-Thesis.pdf", "type": "application/pdf", "size": 3270552, "path": "Publication:Niederreiter_2011_SM", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Niederreiter_2011_SM/Niederreiter_2011_SM-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Niederreiter_2011_SM/Niederreiter_2011_SM-Thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Niederreiter_2011_SM/", "__class": "Publication" }, { "id": "Fechter_2011_DBS", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Deformation Based Manual Segmentation in Three and Four Dimensions", "date": "2011-09", "abstract": "Segmentation of medical image data has grown into one of the most important parts in medicine\r\nduring the past years. The main fields of segmentation in the area of medicine are surgicalplanning,\r\ndiagnosis, therapy-planning and simulation. The focus was in the last years mainly\r\non automatic and semi-automatic segmentation methods for 3D and 4D datasets. Most of them\r\nare highly specialized as they need a lot of prior knowledge and often the results, especially in\r\npresence of pathologies or other abnormalities, have to be corrected manually. An alternative\r\nto automatic and semi-automatic methods is to perform the segmentation manually. The main\r\ndrawbacks of this approach are that it is very tedious and time consuming, the user knowledge\r\nhas a very high impact on the results and it is very hard to reproduce specific results.\r\nThis work presents a tool that enables the user to enhance results of automatic and semiautomatic\r\nalgorithms and to do fast manual segmentation of shapes of arbitrary topology from\r\nscratch. The tool can deal with three and four dimensional image datasets captured by different\r\nmodalities. The segmentation is mesh based and performed with a 2D cut approach. With the\r\nuse of this approach the user aligns a 2D cut through the mesh to the shape to segment but in the\r\nbackground the 3D mesh gets deformed. To achieve a better alignment of the edges to a specific\r\nshape the edge class based Sticky Edges algorithm is introduced. Furthermore, well known\r\nmesh optimization algorithms like subdivision, smoothing and decimation were implemented\r\nto accomplish better results. To achieve a faster segmentation of four dimensional datasets two\r\nmethods are presented. With the first one the user can record its interactions on one volume in\r\nthe 4D dataset and apply them automatically to the other volumes. The other one enables the\r\nuser set an already segmented mesh as start position for the segmentation of other volumes.\r\nThe approach presented in this work is up to 25 times faster than the Livewire approach [41]\r\nthat was used to evaluate this tool. Moreover, the mesh quality regarding smoothness, curvature\r\nand triangle quality are at eye level with the evaluation meshes. The geometric distance to the\r\nground truth meshes is on average 2 mm and the normal deviation is between 0.3 and 0.4 degree.\r\nTo sum up, this master thesis introduces a tool for fast manual image segmentation that provides\r\nproper mesh quality.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "Thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Fechter_2011_DBS-Thesis.pdf", "type": "application/pdf", "size": 2836127, "path": "Publication:Fechter_2011_DBS", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Fechter_2011_DBS/Fechter_2011_DBS-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Fechter_2011_DBS/Fechter_2011_DBS-Thesis:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 933 ], "supervisor": [ 231, 166 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "Thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Fechter_2011_DBS-Thesis.pdf", "type": "application/pdf", "size": 2836127, "path": "Publication:Fechter_2011_DBS", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Fechter_2011_DBS/Fechter_2011_DBS-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Fechter_2011_DBS/Fechter_2011_DBS-Thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Fechter_2011_DBS/", "__class": "Publication" }, { "id": "Steiner_2011", "type_id": "bachelorthesis", "tu_id": null, "repositum_id": null, "title": "Post Processing Effects", "date": "2011-08", "abstract": "Post processing effects, photo realistic ones as well as non photo-realistic ones are very important to modern computer games. This paper tries to give an overview of how post processing works and which methods can be used to perform them in real-time, giving hints how these special effects can be implemented on modern graphic hardware. Additionally, this paper gives an overview of algorithms used for special post processing effects like depth of field or motion blur, making them comparable to other implementations.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 1120 ], "supervisor": [ 909 ], "research_areas": [], "keywords": [ "Post Processing Effects" ], "weblinks": [], "files": [ { "description": "Post Processing Effects", "filetitle": "Thesis", "main_file": false, "use_in_gallery": false, "access": "public", "name": "Steiner_2011-Thesis.pdf", "type": "application/pdf", "size": 9237917, "path": "Publication:Steiner_2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Steiner_2011/Steiner_2011-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Steiner_2011/Steiner_2011-Thesis:thumb{{size}}.png" } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Steiner_2011/", "__class": "Publication" }, { "id": "kehrer-2011-vai", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Interactive Visual Analysis of Heterogeneous Scientific Data across an Interface", "date": "2011-07", "abstract": "In this paper, we present a systematic approach to the interactive visual exploration and analysis of heterogeneous scientific\r\ndata. Based on a setup of coordinated multiple views (with linking and brushing) and heterogeneous data which consists of two blocks\r\nof scientific data (e.g., 2D and 3D data), we enable the joint, feature-based investigation across an interface. The interface specifies\r\n(a) which items in the one part of the data are related to which items in the other part, and vice versa, (b) how selections (in terms\r\nof feature extraction) are transferred between the two parts of the data, and (c) how interaction is realized during the visual analysis.\r\nWe also propose strategies for visual analysis across an interface resulting in interactive and iterative refinement of features specified\r\nin different parts of the data. We demonstrate the usefulness of our approach in the context of two visual analysis scenarios with\r\nheterogeneous scientific data, i.e., a multi-run climate simulation and a complex simulation of fluid-structure interaction.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1053, "image_height": 1000, "name": "kehrer-2011-vai-image.jpg", "type": "image/jpeg", "size": 242521, "path": "Publication:kehrer-2011-vai", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/kehrer-2011-vai/kehrer-2011-vai-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/kehrer-2011-vai/kehrer-2011-vai-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 983, 662, 212, 176 ], "date_from": "2011-10-23", "date_to": "2011-10-28", "event": "IEEE VisWeek 2011", "issn": "1077-2626", "journal": "IEEE Transaction on Visualization and Computer Graphics", "lecturer": [ 983 ], "location": "Providence, RI", "number": "7", "pages_from": "934", "pages_to": "946", "volume": "17", "research_areas": [], "keywords": [], "weblinks": [ { "href": "http://www.ii.uib.no/vis/publications/publication/2011/kehrer11heterogeneous", "caption": null, "description": null, "main_file": 0 } ], "files": [ { "description": "", "filetitle": "Draft", "main_file": true, "use_in_gallery": false, "access": "public", "name": "kehrer-2011-vai-Draft.pdf", "type": "application/pdf", "size": 5299107, "path": "Publication:kehrer-2011-vai", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/kehrer-2011-vai/kehrer-2011-vai-Draft.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/kehrer-2011-vai/kehrer-2011-vai-Draft:thumb{{size}}.png" }, { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1053, "image_height": 1000, "name": "kehrer-2011-vai-image.jpg", "type": "image/jpeg", "size": 242521, "path": "Publication:kehrer-2011-vai", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/kehrer-2011-vai/kehrer-2011-vai-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/kehrer-2011-vai/kehrer-2011-vai-image:thumb{{size}}.png" }, { "description": "", "filetitle": "Slides", "main_file": true, "use_in_gallery": false, "access": "public", "name": "kehrer-2011-vai-Slides.pdf", "type": "application/pdf", "size": 2413196, "path": "Publication:kehrer-2011-vai", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/kehrer-2011-vai/kehrer-2011-vai-Slides.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/kehrer-2011-vai/kehrer-2011-vai-Slides:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/kehrer-2011-vai/", "__class": "Publication" }, { "id": "Groeller_2011_HP", "type_id": "journalpaper_notalk", "tu_id": null, "repositum_id": null, "title": "High-performanceGPU-basedRendering for Real-Time, rigid2D/3D-ImageRegistration and MotionPrediction in RadiationOncology", "date": "2011-07", "abstract": "A common problem in image-guided radiation therapy (IGRT) of lung cancer as well as other malignant diseases is the compensation of periodic and aperiodic motion during dose delivery. Modern systems for image-guided radiationoncology allow for the acquisition of cone-beam computed tomography data in the treatment room as well as the acquisition of planar radiographs during the treatment. A mid-term research goal is the compensation of tumor target volume motion by 2D/3Dregistration. In 2D/3Dregistration, spatial information on organ location is derived by an iterative comparison of perspective volume renderings, so-called digitally rendered radiographs (DRR) from computed tomography volume data, and planar reference x-rays. Currently, this rendering process is very time consuming, and real-timeregistration, which should at least provide data on organ position in less than a second, has not come into existence. We present two GPU-basedrendering algorithms which generate a DRR of 512 × 512 pixels size from a CT dataset of 53 MB size at a pace of almost 100 Hz. This rendering rate is feasible by applying a number of algorithmic simplifications which range from alternative volume-driven rendering approaches – namely so-called wobbled splatting – to sub-sampling of the DRR-image by means of specialized raycasting techniques. Furthermore, general purpose graphics processing unit (GPGPU) programming paradigms were consequently utilized. Rendering quality and performance as well as the influence on the quality and performance of the overall registration process were measured and analyzed in detail. The results show that both methods are competitive and pave the way for fast motion compensation by rigid and possibly even non-rigid2D/3Dregistration and, beyond that, adaptive filtering of motion models in IGRT.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 849, 969, 970, 971, 972, 973, 975, 976, 166, 977 ], "journal": "Zeitschrift für Medizinische Physik", "note": "availabe online", "publisher": "Elsevier B.V.", "research_areas": [], "keywords": [ "real-time", "sparse sampling", "DRR", "2D/3D-registration" ], "weblinks": [], "files": [], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_HP/", "__class": "Publication" }, { "id": "Gruenauer-2011-CAT", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Coronary Artery Tracking with Rule-based Gap Closing", "date": "2011-07", "abstract": "Coronary artery diseases are among the leading causes of death in the industrial\r\ncountries. The high death rate leads to an increased demand of\r\ndiagnosis and treatment of these diseases. Additional to the conventional\r\ncoronary angiography, the CT angiography is mainly used in the extended\r\ndiagnostics of coronary artery diseases. This modality allows a detailed\r\nassessment of the coronary vessels and potentially present stenoses. For supporting\r\nthe radiologist during the evaluation of the coronary arteries by the\r\nhelp of computer-aided diagnostic methods, robust and e\u000ecient procedures\r\nfor the tracking of coronary arteries are needed.\r\nThe approach presented in this thesis uni\fes the strong points of existing\r\nmethods delivering high accuracy with the strong points of methods achieving\r\nhigh overlap. Therefore the approach presented in this thesis aims at\r\nhighly accurate results in combination with high overlap of the investigated\r\ncoronary artery vessel tree. The approach is divided into three phases: 1)\r\ncalculation of seed points, 2) tracking of vessel segments, and 3) construction\r\nof the coronary artery trees.\r\nPhase 1 & 2 are executed in an automatic manner. First potential seed\r\npoints for the tracking of vessel segments are identi\fed. During the second\r\nphase, vessel segments located at these seed points are tracked by use of\r\na cylindrical shape model. By use of rule-based anatomical heuristics, the\r\nthird and \fnal phase combines vessel segments to form complete coronary\r\nartery trees. This phase requires minimal user interaction, as the location\r\nof the root of the left and right coronary artery tree needs to be speci\fed.\r\nBeside the detailed description of the algorithm, the integration into a professional\r\nradiology workstation is demonstrated. The results obtained by the\r\nevaluation on 24 CTA datasets show a high overlap (OV) of 89.5% in combination\r\nwith very precise accuracy (AI) of 0.24 mm in comparison to an\r\nexpert-annotated reference segmentation.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 361, "image_height": 362, "name": "Gruenauer-2011-CAT-.jpg", "type": "image/jpeg", "size": 16674, "path": "Publication:Gruenauer-2011-CAT", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gruenauer-2011-CAT/Gruenauer-2011-CAT-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gruenauer-2011-CAT/Gruenauer-2011-CAT-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 924 ], "supervisor": [ 166, 231, 498 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 361, "image_height": 362, "name": "Gruenauer-2011-CAT-.jpg", "type": "image/jpeg", "size": 16674, "path": "Publication:Gruenauer-2011-CAT", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gruenauer-2011-CAT/Gruenauer-2011-CAT-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gruenauer-2011-CAT/Gruenauer-2011-CAT-:thumb{{size}}.png" }, { "description": "", "filetitle": "Thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Gruenauer-2011-CAT-Thesis.pdf", "type": "application/pdf", "size": 5917193, "path": "Publication:Gruenauer-2011-CAT", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gruenauer-2011-CAT/Gruenauer-2011-CAT-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gruenauer-2011-CAT/Gruenauer-2011-CAT-Thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gruenauer-2011-CAT/", "__class": "Publication" }, { "id": "sikachev_peter-2011-dfc", "type_id": "WorkshopTalk", "tu_id": null, "repositum_id": null, "title": "Dynamic Focus + Context\u000b for Volume Rendering", "date": "2011-06-09", "abstract": "Interactive visualization is widely used in many applications for efficient representation of complex data. Many\r\ntechniques make use of the focus+context approach in a static manner. These techniques do not fully make use\r\nof the interaction semantics. In this paper we present a dynamic focus+context approach that highlights salient\r\nfeatures during user interaction. We explore rotation, panning, and zooming interaction semantics and propose\r\nseveral methods of changing visual representations, based on a suggested engagement-estimation method. We\r\nuse DVR-MIP interpolation and a radial opacity-change approach, exploring rotation, panning, and zooming\r\nsemantics. Our approach adds short animations during user interaction that help to explore the data efficiently\r\nand aid the user in the detection of unknown features.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "icon", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 412, "image_height": 540, "name": "sikachev_peter-2011-dfc-icon.png", "type": "image/png", "size": 91526, "path": "Publication:sikachev_peter-2011-dfc", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/sikachev_peter-2011-dfc/sikachev_peter-2011-dfc-icon.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/sikachev_peter-2011-dfc/sikachev_peter-2011-dfc-icon:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 864, 488, 161, 166 ], "event": "Austrian-Russian Joint Seminar", "lecturer": [ 864 ], "location": "VRVis, Vienna, Austria", "research_areas": [], "keywords": [ "focus + context", "visualization", "volume rendering", "user interaction" ], "weblinks": [], "files": [ { "description": "", "filetitle": "icon", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 412, "image_height": 540, "name": "sikachev_peter-2011-dfc-icon.png", "type": "image/png", "size": 91526, "path": "Publication:sikachev_peter-2011-dfc", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/sikachev_peter-2011-dfc/sikachev_peter-2011-dfc-icon.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/sikachev_peter-2011-dfc/sikachev_peter-2011-dfc-icon:thumb{{size}}.png" }, { "description": "", "filetitle": "presentation", "main_file": true, "use_in_gallery": true, "access": "public", "name": "sikachev_peter-2011-dfc-presentation.ppt", "type": "", "size": 8324608, "path": "Publication:sikachev_peter-2011-dfc", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/sikachev_peter-2011-dfc/sikachev_peter-2011-dfc-presentation.ppt", "thumb_image_sizes": [] }, { "description": "", "filetitle": "video1", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 604, "preview_image_height": 480, "name": "sikachev_peter-2011-dfc-video1.wmv", "type": "text/plain", "size": 1378880, "path": "Publication:sikachev_peter-2011-dfc", "preview_name": "sikachev_peter-2011-dfc-video1:preview.png", "preview_type": "image/jpeg", "preview_size": 17107, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/sikachev_peter-2011-dfc/sikachev_peter-2011-dfc-video1.wmv", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/sikachev_peter-2011-dfc/sikachev_peter-2011-dfc-video1:thumb{{size}}.png" }, { "description": "", "filetitle": "video2", "main_file": false, "use_in_gallery": true, "access": "public", "preview_image_width": 604, "preview_image_height": 480, "name": "sikachev_peter-2011-dfc-video2.wmv", "type": "text/plain", "size": 1048228, "path": "Publication:sikachev_peter-2011-dfc", "preview_name": "sikachev_peter-2011-dfc-video2:preview.png", "preview_type": "image/jpeg", "preview_size": 15238, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/sikachev_peter-2011-dfc/sikachev_peter-2011-dfc-video2.wmv", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/sikachev_peter-2011-dfc/sikachev_peter-2011-dfc-video2:thumb{{size}}.png" }, { "description": "", "filetitle": "video3", "main_file": false, "use_in_gallery": true, "access": "public", "preview_image_width": 604, "preview_image_height": 480, "name": "sikachev_peter-2011-dfc-video3.wmv", "type": "text/plain", "size": 847520, "path": "Publication:sikachev_peter-2011-dfc", "preview_name": "sikachev_peter-2011-dfc-video3:preview.png", "preview_type": "image/jpeg", "preview_size": 11955, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/sikachev_peter-2011-dfc/sikachev_peter-2011-dfc-video3.wmv", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/sikachev_peter-2011-dfc/sikachev_peter-2011-dfc-video3:thumb{{size}}.png" } ], "projects_workgroups": [ "ViMaL" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/sikachev_peter-2011-dfc/", "__class": "Publication" }, { "id": "preiner11IR", "type_id": "WorkshopTalk", "tu_id": null, "repositum_id": null, "title": "Screen-Space Triangulation for Interactive Point Rendering", "date": "2011-06-06", "abstract": "We present a novel rendering technique that reconstructs high quality images from unorganized colored point data. While previous point rendering approaches make mostly use of preprocessed point normals and radii, our algorithm only requires position and color data as input and produces a reconstructed color image, normal map and depth map which can instantly be used to apply further deferred lighting passes. \nOur method performs a world-space neighbor search and a subsequent normal estimation in screen-space, and uses the geometry shader to triangulate the color, normal and depth information of the points. To achieve correct visibility and closed surfaces in the projected image a temporal coherence approach reuses triangulated depth information and provides adaptive neighbor search radii. Our algorithm is especially suitable for in-situ high-quality visualization of big datasets like 3D-scans, making otherwise time-consuming preprocessing steps to reconstruct surface normals and point radii dispensable.\n", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 809, "image_height": 574, "name": "preiner11IR-.png", "type": "image/png", "size": 567107, "path": "Publication:preiner11IR", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/preiner11IR/preiner11IR-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/preiner11IR/preiner11IR-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 799 ], "date_from": "2011-06-06", "date_to": "2011-06-09", "event": "Austrian-Russian Joint Seminar", "lecturer": [ 799 ], "location": "Vienna", "research_areas": [ "Rendering" ], "keywords": [ "point visualization", "screen space reconstruction" ], "weblinks": [], "files": [ { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 809, "image_height": 574, "name": "preiner11IR-.png", "type": "image/png", "size": 567107, "path": "Publication:preiner11IR", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/preiner11IR/preiner11IR-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/preiner11IR/preiner11IR-:thumb{{size}}.png" }, { "description": null, "filetitle": "slides", "main_file": true, "use_in_gallery": false, "access": "public", "name": "preiner11IR-slides.pdf", "type": "application/pdf", "size": 2978755, "path": "Publication:preiner11IR", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/preiner11IR/preiner11IR-slides.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/preiner11IR/preiner11IR-slides:thumb{{size}}.png" } ], "projects_workgroups": [ "TERAPOINTS" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/preiner11IR/", "__class": "Publication" }, { "id": "Berger_2011_UAE", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Uncertainty-Aware Exploration of Continuous Parameter Spaces Using Multivariate Prediction", "date": "2011-06", "abstract": "Systems projecting a continuous n-dimensional parameter space to a continuous m-dimensional target space play\r\nan important role in science and engineering. If evaluating the system is expensive, however, an analysis is often\r\nlimited to a small number of sample points. The main contribution of this paper is an interactive approach to\r\nenable a continuous analysis of a sampled parameter space with respect to multiple target values. We employ\r\nmethods from statistical learning to predict results in real-time at any user-defined point and its neighborhood. In\r\nparticular, we describe techniques to guide the user to potentially interesting parameter regions, and we visualize\r\nthe inherent uncertainty of predictions in 2D scatterplots and parallel coordinates. An evaluation describes a realworld\r\nscenario in the application context of car engine design and reports feedback of domain experts. The results\r\nindicate that our approach is suitable to accelerate a local sensitivity analysis of multiple target dimensions, and\r\nto determine a sufficient local sampling density for interesting parameter regions.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 961, 451, 962, 166 ], "date_from": "2011-05-31", "date_to": "2011-06-03", "event": "EuroVis 2011", "issn": "0167-7055", "journal": "Computer Graphics Forum", "lecturer": [ 961 ], "location": "Bergen, Norway", "note": "Best Paper Award", "number": "3", "pages_from": "911", "pages_to": "920", "volume": "30", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Berger_2011_UAE-Paper.pdf", "type": "application/pdf", "size": 10076298, "path": "Publication:Berger_2011_UAE", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Berger_2011_UAE/Berger_2011_UAE-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Berger_2011_UAE/Berger_2011_UAE-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "VRVis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Berger_2011_UAE/", "__class": "Publication" }, { "id": "Muigg_2011_VC", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Visual Coherence for Large-Scale Line-Plot Visualizations", "date": "2011-06", "abstract": "Displaying a large number of lines within a limited amount of screen space is a task that is common to many\r\ndifferent classes of visualization techniques such as time-series visualizations, parallel coordinates, link-node diagrams,\r\nand phase-space diagrams. This paper addresses the challenging problems of cluttering and overdraw\r\ninherent to such visualizations. We generate a 2x2 tensor field during line rasterization that encodes the distribution\r\nof line orientations through each image pixel. Anisotropic diffusion of a noise texture is then used to generate\r\na dense, coherent visualization of line orientation. In order to represent features of different scales, we employ a\r\nmulti-resolution representation of the tensor field. The resulting technique can easily be applied to a wide variety\r\nof line-based visualizations. We demonstrate this for parallel coordinates, a time-series visualization, and a\r\nphase-space diagram. Furthermore, we demonstrate how to integrate a focus+context approach by incorporating\r\na second tensor field. Our approach achieves interactive rendering performance for large data sets containing\r\nmillions of data items, due to its image-based nature and ease of implementation on GPUs. Simulation results\r\nfrom computational fluid dynamics are used to evaluate the performance and usefulness of the proposed method.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 662, 226, 212, 166 ], "booktitle": "Computer Graphics Forum", "date_from": "2011-05-31", "date_to": "2011-06-03", "event": "EuroVis 2011", "issn": "0167-7055", "journal": "Computer Graphics Forum", "lecturer": [ 662 ], "location": "Bergen, Norway", "number": "3", "organization": "The Eurographics Association and Blackwell Publishing Ltd.", "pages_from": "643", "pages_to": "652", "publisher": "Blackwell Publishing", "volume": "30", "research_areas": [], "keywords": [], "weblinks": [ { "href": "http://onlinelibrary.wiley.com/doi/10.1111/j.1467-8659.2011.01913.x/abstract", "caption": null, "description": null, "main_file": 0 } ], "files": [ { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Muigg_2011_VC-Paper.pdf", "type": "application/pdf", "size": 1396935, "path": "Publication:Muigg_2011_VC", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Muigg_2011_VC/Muigg_2011_VC-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Muigg_2011_VC/Muigg_2011_VC-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Muigg_2011_VC/", "__class": "Publication" }, { "id": "Nuernberg-2011-CBO", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Cell-Based Object Representation", "date": "2011-06", "abstract": "Today's real-time applications, such as computer games or virtual environments,\r\nneed to display more and more geometrically complex surfaces. The appearance\r\nof such surfaces are achieved by local parallax, correct occlusions, convincing\r\nsilhouettes and even by sophisticated effects such as self-reflection, refraction,\r\ntranslucency, self-shadowing and caustics to name a few. Hence simple texturing\r\nmapping is insufficient to produce such high geometric complexity.\r\nThis thesis proposes a cell-based approach to model and render repetitive fine\r\nscaled details with a high visual quality. The main idea of the precomputation is\r\nto decompose the object into a low frequent geometry (the general shape of the\r\nobject) and high frequent surface details. The high frequent surface details are\r\nrepresented by so-called cells tiled all over the object space. The precomputed\r\ncell-based object representation is displayed by a ray tracer providing correct\r\nparallax, occlusions and silhouettes. This thesis proves that sophisticated effects\r\nsuch as specular self-reflection and refraction can easily be rendered with the\r\ncell-based approach.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1151, "image_height": 437, "name": "Nuernberg-2011-CBO-image.jpg", "type": "image/jpeg", "size": 184179, "path": "Publication:Nuernberg-2011-CBO", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Nuernberg-2011-CBO/Nuernberg-2011-CBO-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Nuernberg-2011-CBO/Nuernberg-2011-CBO-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 777 ], "date_start": "2009-02-18", "matrikelnr": "0425202", "supervisor": [ 193, 356 ], "research_areas": [], "keywords": [ "Cell-based texturing, Interactive ray ca" ], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1151, "image_height": 437, "name": "Nuernberg-2011-CBO-image.jpg", "type": "image/jpeg", "size": 184179, "path": "Publication:Nuernberg-2011-CBO", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Nuernberg-2011-CBO/Nuernberg-2011-CBO-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Nuernberg-2011-CBO/Nuernberg-2011-CBO-image:thumb{{size}}.png" }, { "description": "", "filetitle": "Poster", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Nuernberg-2011-CBO-Poster.pdf", "type": "application/pdf", "size": 21079138, "path": "Publication:Nuernberg-2011-CBO", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Nuernberg-2011-CBO/Nuernberg-2011-CBO-Poster.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Nuernberg-2011-CBO/Nuernberg-2011-CBO-Poster:thumb{{size}}.png" }, { "description": "", "filetitle": "thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Nuernberg-2011-CBO-thesis.pdf", "type": "application/pdf", "size": 47552249, "path": "Publication:Nuernberg-2011-CBO", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Nuernberg-2011-CBO/Nuernberg-2011-CBO-thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Nuernberg-2011-CBO/Nuernberg-2011-CBO-thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "Desiree" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Nuernberg-2011-CBO/", "__class": "Publication" }, { "id": "bernhard-2011-maicg", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Manipulating Attention in Computer Games", "date": "2011-06", "abstract": "In computer games, a user’s attention is focused on the current task, and task-irrelevant details remain unnoticed. This behavior, known as inattentional blindness, is a main problem for the optimal placement of information or advertisements. We propose a guiding principle based on Wolfe’s theory of Guided Search, which predicts the saliency of objects during a visual search task. Assuming that computer games elicit visual search tasks frequently, we applied this model in a “reverse” direction: Given a target item (e.g., advertisement) which should be noticed by the user, we choose a frequently searched game item and modify it so that it shares some perceptual features (e.g., color or orientation) with the target item. A memory experiment with 36 participants showed that in an action video game, advertisements were more noticeable to users when this method is applied.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 660, 839, 193 ], "booktitle": "Proceedings of the IEEE IVMSP Workshop on Perception and Visual Signal Analysis", "date_from": "2011-06-16", "date_to": "2011-06-17", "isbn": "9781457712852", "lecturer": [ 660 ], "location": "Ithaca, NY", "pages_from": "153", "pages_to": "158", "publisher": "IEEE", "research_areas": [ "Perception" ], "keywords": [ "saliency", "attention guidance", "inattentional blindness", "in-game advertising", "guided search" ], "weblinks": [], "files": [ { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "bernhard-2011-maicg-paper.pdf", "type": "application/pdf", "size": 2337253, "path": "Publication:bernhard-2011-maicg", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bernhard-2011-maicg/bernhard-2011-maicg-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/bernhard-2011-maicg/bernhard-2011-maicg-paper:thumb{{size}}.png" }, { "description": null, "filetitle": "presentation", "main_file": false, "use_in_gallery": false, "access": "public", "name": "bernhard-2011-maicg-presentation.ppt", "type": "application/vnd.ms-office", "size": 12238336, "path": "Publication:bernhard-2011-maicg", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bernhard-2011-maicg/bernhard-2011-maicg-presentation.ppt", "thumb_image_sizes": [] } ], "projects_workgroups": [ "GPV" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bernhard-2011-maicg/", "__class": "Publication" }, { "id": "schmidt-2011-mt", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Interactive Variability Analysis for Initial Sample Testing of Industrial CT Data", "date": "2011-06", "abstract": "Casting is a manufacturing process by which melt is poured into a mould and then allowed to solidify. Due to the pouring process as well as during solidification casting defects like shrinkage, pores or\r\ncracks may appear that can influence the cast objects' mechanical properties and usability. Designing a new type of casting always requires the production of a new pattern first. Before release of serial production a series of initial samples is created. During this evaluation step possible problems are identified that may occur for example due to the mould layout. In the course of this master's thesis effort, a new approach for first article inspection is introduced.\r\nThe goal of this approach is to explore a series of industrial CT volumes, with the objective to evaluate the casting design. Using the pipeline investigations of the reliability of the production can\r\nbe performed. The variability analysis is based on a segmentation approach for defect detection which enables to differentiate discontinuities from the rest of the volume In case regions of high defect concentration should be identified, a clustering approach is applied to all samples within the series. The input data set used for clustering consists of the defects' centres of gravity. This way the clustering algorithm can be applied to a set of data points in 3D space. In the further course the cluster information is used to analyse the variability of the sample series, since they represent regions of high defect concentration. The analysis of large defects, in contrast, directly operates on the data produced by the defect detection stage. The data of all samples is compared to find possible overlaps. For the variability analysis it is important to know whether regions can be\r\nfound that contain defects in more than one trial sample. The identification of such regions shows that the casting process tends to produce errors in certain parts of the object.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 300, "image_height": 339, "name": "schmidt-2011-mt-.png", "type": "image/png", "size": 80558, "path": "Publication:schmidt-2011-mt", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/schmidt-2011-mt/schmidt-2011-mt-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/schmidt-2011-mt/schmidt-2011-mt-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 950 ], "supervisor": [ 166 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 300, "image_height": 339, "name": "schmidt-2011-mt-.png", "type": "image/png", "size": 80558, "path": "Publication:schmidt-2011-mt", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/schmidt-2011-mt/schmidt-2011-mt-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/schmidt-2011-mt/schmidt-2011-mt-:thumb{{size}}.png" }, { "description": "", "filetitle": "Poster", "main_file": false, "use_in_gallery": false, "access": "public", "name": "schmidt-2011-mt-Poster.pdf", "type": "application/pdf", "size": 747339, "path": "Publication:schmidt-2011-mt", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/schmidt-2011-mt/schmidt-2011-mt-Poster.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/schmidt-2011-mt/schmidt-2011-mt-Poster:thumb{{size}}.png" }, { "description": "", "filetitle": "Thesis", "main_file": false, "use_in_gallery": false, "access": "public", "name": "schmidt-2011-mt-Thesis.pdf", "type": "application/pdf", "size": 27663085, "path": "Publication:schmidt-2011-mt", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/schmidt-2011-mt/schmidt-2011-mt-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/schmidt-2011-mt/schmidt-2011-mt-Thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/schmidt-2011-mt/", "__class": "Publication" }, { "id": "Groeller_2011_CW", "type_id": "WorkshopTalk", "tu_id": null, "repositum_id": null, "title": "Contingency Wheel: Visual Analysis of Large Contingency Tables", "date": "2011-05-31", "abstract": "We present the Contingency Wheel, a visual method for finding and analyzing associations in a large nm contingency\ntable with m < 100 and n being two to three orders of magnitude larger than m. The method is demonstrated on a large\ntable from the Book-Crossing dataset, which counts the number of ratings each book received from each country. It\nenables finding books that received a disproportionately high number of ratings from a specific country. It further allows\nto visually analyze what these books have in common, and with which countries they are also highly associated. Pairs of\nsimilar countries can further be identified (in the sense that many books are associated with both countries). Compared\nwith existing visual methods, our approach enables analyzing and gaining insight into larger tables.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 734, 166, 966, 665 ], "event": "International Workshop on Visual Analytics (2011)", "lecturer": [ 734 ], "location": "Bergen, Norway", "research_areas": [ "InfoVis" ], "keywords": [], "weblinks": [], "files": [ { "description": null, "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Groeller_2011_CW-Paper.pdf", "type": "application/pdf", "size": 693452, "path": "Publication:Groeller_2011_CW", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_CW/Groeller_2011_CW-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_CW/Groeller_2011_CW-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_CW/", "__class": "Publication" }, { "id": "sikachev_peter-2011-protovis", "type_id": "WorkshopTalk", "tu_id": null, "repositum_id": null, "title": "ProtoVis", "date": "2011-05-11", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 332, "image_height": 332, "name": "sikachev_peter-2011-protovis-image.png", "type": "image/png", "size": 138847, "path": "Publication:sikachev_peter-2011-protovis", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/sikachev_peter-2011-protovis/sikachev_peter-2011-protovis-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/sikachev_peter-2011-protovis/sikachev_peter-2011-protovis-image:thumb{{size}}.png" }, 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"https://www.cg.tuwien.ac.at/research/publications/2011/sikachev_peter-2011-protovis/sikachev_peter-2011-protovis-video1.wmv", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/sikachev_peter-2011-protovis/sikachev_peter-2011-protovis-video1:thumb{{size}}.png" }, { "description": "Retrieving interaction information from ProtoVis", "filetitle": "video2", "main_file": false, "use_in_gallery": true, "access": "public", "preview_image_width": 640, "preview_image_height": 360, "name": "sikachev_peter-2011-protovis-video2.wmv", "type": "text/plain", "size": 261198, "path": "Publication:sikachev_peter-2011-protovis", "preview_name": "sikachev_peter-2011-protovis-video2:preview.png", "preview_type": "image/jpeg", "preview_size": 24438, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/sikachev_peter-2011-protovis/sikachev_peter-2011-protovis-video2.wmv", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/sikachev_peter-2011-protovis/sikachev_peter-2011-protovis-video2:thumb{{size}}.png" } ], "projects_workgroups": [ "ViMaL" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/sikachev_peter-2011-protovis/", "__class": "Publication" }, { "id": "PH-2011-LDS", "type_id": "phdthesis", "tu_id": null, "repositum_id": null, "title": "Large Data Scalability in Interactive Visual Analysis", "date": "2011-05", "abstract": "In many areas of science and industry, the amount of data is growing fast and often already exceeds the ability to evaluate it. On the other hand, the unprecedented amount of available data bears an enormous potential for supporting decision-making. Turning data into comprehensible knowledge is thus a key challenge of the 21st century.\nThe power of the human visual system makes visualization an appropriate method to\ncomprehend large data. In particular interactive visualization enables a discourse between\nthe human brain and the data that can transform a cognitive problem to a perceptual one.\nHowever, the visual analysis of large and complex datasets involves both visual and computational\nchallenges. Visual limits involve perceptual and cognitive limitations of the user and\nrestrictions of the display devices while computational limits are related to the computational\ncomplexity of the involved algorithms.\nThe goal of this thesis is to advance the state of the art in visual analysis with respect to the\nscalability to large datasets. Due to the multifaceted nature of scalability, the contributions\nspan a broad range to enhance computational scalability, to improve the visual scalability of\nselected visualization approaches, and to support an analysis of high-dimensional data.\nConcerning computational scalability, this thesis describes a generic architecture to facilitate\nthe development of highly interactive visual analysis tools using multi-threading. The\narchitecture builds on the separation of the main application thread and dedicated visualization\nthreads, which can be cancelled early due to user interaction. A quantitative evaluation\nshows fast visual feedback during continuous interaction even for millions of entries.\nTwo variants of scatterplots address the visual scalability of different types of data and\ntasks. For continuous data, a combination of 2D and 3D scatterplots intends to combine\nthe advantages of 2D interaction and 3D visualization. Several extensions improve the depth\nperception in 3D and address the problem of unrecognizable point densities in both 2D and\n3D. For partly categorical data, the thesis contributes Hierarchical Difference Scatterplots\nto relate multiple hierarchy levels and to explicitly visualize differences between them in the\ncontext of the absolute position of pivoted values.\nWhile comparisons in Hierarchical Difference Scatterplots are only qualitative, this thesis\nalso contributes an approach for quantifying subsets of the data by means of statistical moments\nfor a potentially large number of dimensions. This approach has proven useful as an\ninitial overview as well as for a quantitative comparison of local features like clusters.\nAs an important application of visual analysis, the validation of regression models also\ninvolves the scalability to multi-dimensional data. This thesis describes a design study of an\napproach called HyperMoVal for this task. The key idea is to visually relate n-dimensional\nscalar functions to known validation data within a combined visualization. The integration\nwith other multivariate views is a step towards a user-centric workflow for model building.\nBeing the result of collaboration with experts in engine design, HyperMoVal demonstrates\nhow visual analysis is suitable to significantly improve real-world tasks. Positive user feedback suggests a high impact of the contributions of this thesis also outside the visualization\nresearch community. Moreover, most contributions of this thesis have been combined in a\ncommercially distributed software framework for engineering applications that will hopefully\nraise the awareness and promote the use of visual analysis in multiple application domains.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "Teaser", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1122, "image_height": 1590, "name": "PH-2011-LDS-Teaser.jpg", "type": "image/jpeg", "size": 278320, "path": "Publication:PH-2011-LDS", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/PH-2011-LDS/PH-2011-LDS-Teaser.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/PH-2011-LDS/PH-2011-LDS-Teaser:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 451 ], "date_end": "2011-05", "date_start": "2008-10", "reviewer_1": [ 166 ], "reviewer_2": [ 1324 ], "rigorosum": "2011-09-09", "supervisor": [ 166 ], "research_areas": [ "InfoVis" ], "keywords": [ "high dimensionality", "Visualization", "Scalability", "Interaction", "Data analysis", "multi-threading", "scatter plots" ], "weblinks": [], "files": [ { "description": null, "filetitle": "Teaser", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1122, "image_height": 1590, "name": "PH-2011-LDS-Teaser.jpg", "type": "image/jpeg", "size": 278320, "path": "Publication:PH-2011-LDS", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/PH-2011-LDS/PH-2011-LDS-Teaser.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/PH-2011-LDS/PH-2011-LDS-Teaser:thumb{{size}}.png" }, { "description": null, "filetitle": "Thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "PH-2011-LDS-Thesis.pdf", "type": "application/pdf", "size": 17979794, "path": "Publication:PH-2011-LDS", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/PH-2011-LDS/PH-2011-LDS-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/PH-2011-LDS/PH-2011-LDS-Thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/PH-2011-LDS/", "__class": "Publication" }, { "id": "ZL_2011_IVIG", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Improving the Visibility of In-Game Advertisements", "date": "2011-05", "abstract": "Computer games have become one of the most important parts of entertainment industry.\r\nDue to a tremendous reach, particularly among important customer groups such as\r\nadolescents and young adults, this media is recently considered as an appealing channel\r\nfor advertising. However, little is known about the effectiveness of advertising in computer\r\ngames. Its interactive nature comes with a fundamental difference in the perception of\r\nadvertisements compared to traditional media such as television. The intense user interaction\r\nin computer games interferes with players’ memory and attention, as players primarily\r\nfocus on the current performed task. Information such as advertisements billboards which\r\nis not directly related to the gaming task remains unnoticed. This behavior, known as inattentional\r\nblindness, is a main problem for the optimal placement of information (e.g.\r\ngame-relevant messages) or advertisements in the game’s virtual environment.\r\nThis thesis will review the history, current methods and issues of advertising in computer\r\ngames. It will particularly discuss the perception of embedded advertisement billboards\r\nand propose one way to break through inattentional blindness, in order to make advertisements\r\nwhich are embedded in an action game’s environment more visible. The underlying\r\napproach is based on Wolfe’s theory of Guided Search, which provides a fairly reliable\r\nmodel for top-down controlled visual attention during visual search tasks. Since computer\r\ngames frequently involve visual search tasks, we hypothesize that this model can be applied\r\nin a “reverse” direction to increase the saliency of some advertisements on a cognitive level,\r\nto get noticed even in the presence of a strong task.To validate this hypothesis, a computer\r\ngame was implemented to conduct a user study for testing the memory effectiveness.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Image", "filetitle": "", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1012, "image_height": 407, "name": "ZL_2011_IVIG-.jpg", "type": "image/jpeg", "size": 50417, "path": "Publication:ZL_2011_IVIG", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/ZL_2011_IVIG/ZL_2011_IVIG-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/ZL_2011_IVIG/ZL_2011_IVIG-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 839 ], "supervisor": [ 660, 193 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "Image", "filetitle": "", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1012, "image_height": 407, "name": "ZL_2011_IVIG-.jpg", "type": "image/jpeg", "size": 50417, "path": "Publication:ZL_2011_IVIG", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/ZL_2011_IVIG/ZL_2011_IVIG-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/ZL_2011_IVIG/ZL_2011_IVIG-:thumb{{size}}.png" }, { "description": "", "filetitle": "poster", "main_file": true, "use_in_gallery": false, "access": "public", "name": "ZL_2011_IVIG-poster.pdf", "type": "application/pdf", "size": 17600086, "path": "Publication:ZL_2011_IVIG", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/ZL_2011_IVIG/ZL_2011_IVIG-poster.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/ZL_2011_IVIG/ZL_2011_IVIG-poster:thumb{{size}}.png" }, { "description": "", "filetitle": "thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "ZL_2011_IVIG-thesis.pdf", "type": "application/pdf", "size": 14208296, "path": "Publication:ZL_2011_IVIG", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/ZL_2011_IVIG/ZL_2011_IVIG-thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/ZL_2011_IVIG/ZL_2011_IVIG-thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "GPV" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/ZL_2011_IVIG/", "__class": "Publication" }, { "id": "waser_2011_VSD", "type_id": "phdthesis", "tu_id": null, "repositum_id": null, "title": "Visual Steering to Support Decision Making in Visdom", "date": "2011-05", "abstract": "Computer simulation has become an ubiquitous tool to investigate\nthe nature of systems. When steering a simulation, users modify parameters\nto study their impact on the simulation outcome. The ability to test\nalternative options provides the basis for interactive decision making. Increasingly\ncomplex simulations are characterized by an intricate interplay\nof many heterogeneous input and output parameters. A steering concept\nthat combines simulation and visualization within a single, comprehensive\nsystem is largely missing. This thesis targets the basic components\nof a novel integrated steering system called Visdom to support the user\nin the decision making process. The proposed techniques enable users\nto examine alternative scenarios without the need for special simulation\nexpertise. To accomplish this, we propose World Lines as a management\nstrategy for multiple, related simulation runs. In a dedicated view, users\ncreate and navigate through many simulation runs. New decisions are\nincluded through the concept of branching. To account for uncertain\nknowledge about the input parameters, we provide the ability to cover\nfull parameter distributions. Via multiple cursors, users navigate a system\nof multiple linked views through time and alternative scenarios. In this\nway, the system supports comparative visual analysis of many simulation\nruns. Since the steering process generates a huge amount of information,\nwe employ the machine to support the user in the search for explanations\ninside the computed data. Visdom is built on top of a data-flow network\nto provide a high level of modularity. A decoupled meta-flow is in charge\nof transmitting parameter changes from World Lines to the affected dataflow\nnodes. To direct the user attention to the most relevant parts, we\nprovide dynamic visualization inside the flow diagram. The usefulness of\nthe presented approach is substantiated through case studies in the field\nof flood management. The Visdom application enables the design of a\nbreach closure by dropping sandbags in a virtual environment.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "Image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1000, "image_height": 985, "name": "waser_2011_VSD-Image.jpg", "type": "image/jpeg", "size": 134428, "path": "Publication:waser_2011_VSD", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/waser_2011_VSD/waser_2011_VSD-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/waser_2011_VSD/waser_2011_VSD-Image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 798 ], "date_end": "2011-06", "date_start": "2008-10", "reviewer_1": [ 166 ], "reviewer_2": [ 1330 ], "rigorosum": "2011-06-15", "supervisor": [ 166 ], "research_areas": [ "InfoVis" ], "keywords": [ "CFD", "Data-Flow", "Simulation Steering", "Comparative Visual Analysis", "Multiple Simulation Runs", "Problem Solving Environment", "Hypothesis Generation", "Uncertainty", "Flood Management" ], "weblinks": [], "files": [ { "description": null, "filetitle": "Image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1000, "image_height": 985, "name": "waser_2011_VSD-Image.jpg", "type": "image/jpeg", "size": 134428, "path": "Publication:waser_2011_VSD", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/waser_2011_VSD/waser_2011_VSD-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/waser_2011_VSD/waser_2011_VSD-Image:thumb{{size}}.png" }, { "description": null, "filetitle": "Thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "waser_2011_VSD-Thesis.pdf", "type": "application/pdf", "size": 41981581, "path": "Publication:waser_2011_VSD", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/waser_2011_VSD/waser_2011_VSD-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/waser_2011_VSD/waser_2011_VSD-Thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/waser_2011_VSD/", "__class": "Publication" }, { "id": "Kinkelin-2011-VR", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Variational Reconstruction and GPU Ray-Casting of Non-Uniform Point Sets using B-Spline Pyramids", "date": "2011-05", "abstract": "In this work, we focus on the problem of reconstructing a volume (scalar 3D field) based\r\non non-uniform point samples and then rendering the volume by exploiting the processing\r\npower of GPUs.\r\nIn the first part involving the reconstruction, we motivate our choice of tensor-product\r\nuniform B-splines for the discretized representation of the continuous volume. They allow\r\nfor highly efficient, scalable and accurate reconstruction at multiple scales (resolution\r\nlevels) at once. By subdividing the volume into blocks and reconstructing them independently,\r\ncurrent desktop PCs are able to reconstruct large volumes and multiple CPU cores\r\ncan be efficiently exploited. We focus on linear and cubic B-splines and on how to eliminate\r\notherwise resulting block discontinuities.\r\nOnce we have reconstructed the volume at multiple scales, we can derive different\r\nLevels of Detail (LoDs) by subdividing the volume into blocks and selecting a suitable\r\nscale for each block. We present a fusion scheme which guarantees global C0 continuity\r\nfor linear LoDs and C2 continuity for cubic ones. The challenge here is to minimize visual\r\nblock interscale discontinuities.\r\nA LoD, consisting of a hierarchical spatial subdivision into blocks and an autonomous\r\nB-spline coefficient grid for each block, is then rendered via a GPU ray-caster. We achieve\r\ninteractive frame-rates for qualitative Direct Volume Renderings (DVRs) and real-time\r\nframe-rates for iso-surface renderings.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 905 ], "supervisor": [ 166, 636 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "Thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Kinkelin-2011-VR-Thesis.pdf", "type": "application/pdf", "size": 100293701, "path": "Publication:Kinkelin-2011-VR", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Kinkelin-2011-VR/Kinkelin-2011-VR-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Kinkelin-2011-VR/Kinkelin-2011-VR-Thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Kinkelin-2011-VR/", "__class": "Publication" }, { "id": "Groeller_2011_IPV", "type_id": "poster", "tu_id": null, "repositum_id": null, "title": "Illustrative Particle Visualization of 4D MRI Blood-Flow Data", "date": "2011-05", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 891, 166, 965, 459 ], "booktitle": "Biomedical Image Analysis", "date_from": "2011-05-31", "date_to": "2011-06-03", "event": "EuroVis 2011", "location": "Bergen, Norway", "research_areas": [ "IllVis" ], "keywords": [], "weblinks": [], "files": [ { "description": null, "filetitle": "Poster", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Groeller_2011_IPV-Poster.pdf", "type": "application/pdf", "size": 1097741, "path": "Publication:Groeller_2011_IPV", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_IPV/Groeller_2011_IPV-Poster.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_IPV/Groeller_2011_IPV-Poster:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_IPV/", "__class": "Publication" }, { "id": "Goldmann_2011_GPU", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Towards GPU Speech Coding", "date": "2011-05", "abstract": "Speech transmission is the central service in many telecommunication infrastructures. The encoding\r\nof many channels according to modern standards requires a fair amount of processing\r\ncapacity. With the recent GPU product lines, powerful platforms have become available as supplement\r\nto desktop CPUs. This thesis tries to leverage these developments and examines the\r\npossibilities of general purpose GPU employment in the context of speech coding. The speech\r\ncodec used in the TETRA mobile radio system is implemented using the CUDA programming\r\nmodel. The main question is, how many channels can be encoded in real time on current GPUs.\r\nResults show that through careful implementation and with some effort, a substial number of\r\nchannels can be processed. It seems however that modern multicore CPUs are much better\r\nqualified for the task. The presented optimizations are far from complete and further research\r\ndirections are suggested.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 928 ], "supervisor": [ 193 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "poster", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Goldmann_2011_GPU-poster.pdf", "type": "application/pdf", "size": 1036794, "path": "Publication:Goldmann_2011_GPU", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Goldmann_2011_GPU/Goldmann_2011_GPU-poster.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Goldmann_2011_GPU/Goldmann_2011_GPU-poster:thumb{{size}}.png" }, { "description": "", "filetitle": "thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Goldmann_2011_GPU-thesis.pdf", "type": "application/pdf", "size": 729279, "path": "Publication:Goldmann_2011_GPU", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Goldmann_2011_GPU/Goldmann_2011_GPU-thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Goldmann_2011_GPU/Goldmann_2011_GPU-thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Goldmann_2011_GPU/", "__class": "Publication" }, { "id": "scheiblauer-2011-cag", "type_id": "journalpaper_notalk", "tu_id": null, "repositum_id": null, "title": "Out-of-Core Selection and Editing of Huge Point Clouds", "date": "2011-04", "abstract": "In this paper we present an out-of-core editing system for point clouds, which allows selecting and modifying arbitrary parts of\na huge point cloud interactively. We can use the selections to segment the point cloud, to delete points, or to render a preview\nof the model without the points in the selections. Furthermore we allow for inserting points into an already existing point cloud.\nAll operations are conducted on a rendering optimized data structure that uses the raw point cloud from a laser scanner, and\nno additionally created points are needed for an ecient level-of-detail (LOD) representation using this data structure. We also\npropose an algorithm to alleviate the artifacts when rendering a point cloud with large discrepancies in density in dierent areas by\nestimating point sizes heuristically. These estimated point sizes can be used to mimic a closed surface on the raw point cloud, also\nwhen the point cloud is composed of several raw laser scans.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Selecting points", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1205, "image_height": 806, "name": "scheiblauer-2011-cag-image.jpg", "type": "image/jpeg", "size": 146472, "path": "Publication:scheiblauer-2011-cag", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/scheiblauer-2011-cag/scheiblauer-2011-cag-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/scheiblauer-2011-cag/scheiblauer-2011-cag-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 614, 193 ], "issn": "0097-8493", "journal": "Computers & Graphics", "number": "2", "pages_from": "342", "pages_to": "351", "volume": "35", "research_areas": [ "Geometry" ], "keywords": [ "Graphics data structures and data types", "Viewing algorithms", "Point-based rendering" ], "weblinks": [], "files": [ { "description": "Selecting points", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1205, "image_height": 806, "name": "scheiblauer-2011-cag-image.jpg", "type": "image/jpeg", "size": 146472, "path": "Publication:scheiblauer-2011-cag", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/scheiblauer-2011-cag/scheiblauer-2011-cag-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/scheiblauer-2011-cag/scheiblauer-2011-cag-image:thumb{{size}}.png" }, { "description": "Out-of-Core Selection and Editing of Huge Point Clouds", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "scheiblauer-2011-cag-paper.pdf", "type": "application/pdf", "size": 7892225, "path": "Publication:scheiblauer-2011-cag", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/scheiblauer-2011-cag/scheiblauer-2011-cag-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/scheiblauer-2011-cag/scheiblauer-2011-cag-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "TERAPOINTS" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/scheiblauer-2011-cag/", "__class": "Publication" }, { "id": "reisner-2011-akgeo", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Reconstructing Buildings as Textured Low Poly Meshes from Point Clouds and Images", "date": "2011-04", "abstract": "Current urban building reconstruction techniques rely mainly on data gathered from either laser scans or image-\nbased approaches, and do usually require a large amount of manual post-processing and modeling. Difficulties arise due to erroneous and noisy data, and due to the huge amount of information to process. We propose a system that helps to overcome these time-consuming steps by automatically generating low-poly 3D building models. This is achieved by taking both information from point clouds and image information into account, exploiting the particular strengths and avoiding the relative weaknesses of these data sources: While the segmented point cloud is used to identify the dominant planar surfaces in 3D space, the images are used to extract accurate edges, fill holes and generate textured polygonal meshes of urban buildings.", "authors_et_al": false, "substitute": null, "main_image": { "description": "clustering surface normals", "filetitle": "image-normals", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1200, "image_height": 500, "name": "reisner-2011-akgeo-image-normals.png", "type": "image/png", "size": 520021, "path": "Publication:reisner-2011-akgeo", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-akgeo/reisner-2011-akgeo-image-normals.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-akgeo/reisner-2011-akgeo-image-normals:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 847, 659, 678 ], "booktitle": "Eurographics 2011 - Short Papers", "editor": "Nick Avis and Sylvain Lefebvre", "lecturer": [ 847 ], "location": "Llandudno, UK", "pages_from": "17", "pages_to": "20", "research_areas": [ "Modeling" ], "keywords": [ "Modeling packages", "Computational Geometry and Object Modeli" ], "weblinks": [], "files": [ { "description": null, "filetitle": "image-library", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 3114, "image_height": 760, "name": "reisner-2011-akgeo-image-library.png", "type": "image/png", "size": 1954691, "path": "Publication:reisner-2011-akgeo", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-akgeo/reisner-2011-akgeo-image-library.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-akgeo/reisner-2011-akgeo-image-library:thumb{{size}}.png" }, { "description": "clustering surface normals", "filetitle": "image-normals", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1200, "image_height": 500, "name": "reisner-2011-akgeo-image-normals.png", "type": "image/png", "size": 520021, "path": "Publication:reisner-2011-akgeo", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-akgeo/reisner-2011-akgeo-image-normals.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-akgeo/reisner-2011-akgeo-image-normals:thumb{{size}}.png" }, { "description": null, "filetitle": "paper", "main_file": false, "use_in_gallery": false, "access": "public", "name": "reisner-2011-akgeo-paper.pdf", "type": "application/pdf", "size": 701519, "path": "Publication:reisner-2011-akgeo", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-akgeo/reisner-2011-akgeo-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-akgeo/reisner-2011-akgeo-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "VRVis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/reisner-2011-akgeo/", "__class": "Publication" }, { "id": "jeschke-2011-est", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Estimating Color and Texture Parameters for Vector Graphics", "date": "2011-04", "abstract": "Diffusion curves are a powerful vector graphic representation that stores an image as a set of 2D Bezier curves with colors defined on either side. These colors are diffused over the image plane, resulting in smooth color regions\nas well as sharp boundaries. In this paper, we introduce a new automatic diffusion curve coloring algorithm. We\nstart by defining a geometric heuristic for the maximum density of color control points along the image curves.\nFollowing this, we present a new algorithm to set the colors of these points so that the resulting diffused image is as close as possible to a source image in a least squares sense. We compare our coloring solution to the existing one which fails for textured regions, small features, and inaccurately placed curves. The second contribution of the paper is to extend the diffusion curve representation to include texture details based on Gabor noise. Like the curves themselves, the defined texture is resolution independent, and represented compactly. We define methods to automatically make an initial guess for the noise texure, and we provide intuitive manual controls to edit the parameters of the Gabor noise. Finally, we show that the diffusion curve representation itself extends to storing any number of attributes in an image, and we demonstrate this functionality with image stippling an hatching\napplications.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1609, "image_height": 651, "name": "jeschke-2011-est-image.jpg", "type": "image/jpeg", "size": 335306, "path": "Publication:jeschke-2011-est", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-est/jeschke-2011-est-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-est/jeschke-2011-est-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 356, 809, 194 ], "date_from": "2011-04-11", "date_to": "2011-04-15", "event": "Eurographics 2011", "issn": "0167-7055", "journal": "Computer Graphics Forum", "lecturer": [ 356 ], "location": "Llandudno (Wales, UK)", "note": "This paper won the 2nd best paper award at Eurographics 2011.", "number": "2", "pages_from": "523", "pages_to": "532", "volume": "30", "research_areas": [ "Rendering" ], "keywords": [], "weblinks": [], "files": [ { "description": "Additional Images", "filetitle": "AddImages", "main_file": false, "use_in_gallery": false, "access": "public", "name": "jeschke-2011-est-AddImages.pdf", "type": "application/pdf", "size": 56030462, "path": "Publication:jeschke-2011-est", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-est/jeschke-2011-est-AddImages.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-est/jeschke-2011-est-AddImages:thumb{{size}}.png" }, { "description": "Fast Forward Video (40 sec)", "filetitle": "FF Video", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 600, "preview_image_height": 600, "name": "jeschke-2011-est-FF Video.avi", "type": "video/x-msvideo", "size": 14726626, "path": "Publication:jeschke-2011-est", "preview_name": "jeschke-2011-est-FF Video:preview.png", "preview_type": "image/jpeg", "preview_size": 6320, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-est/jeschke-2011-est-FF Video.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-est/jeschke-2011-est-FF Video:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-est/jeschke-2011-est-FF Video:video.mp4" }, { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1609, "image_height": 651, "name": "jeschke-2011-est-image.jpg", "type": "image/jpeg", "size": 335306, "path": "Publication:jeschke-2011-est", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-est/jeschke-2011-est-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-est/jeschke-2011-est-image:thumb{{size}}.png" }, { "description": "preprint", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "jeschke-2011-est-paper.pdf", "type": "application/pdf", "size": 17986852, "path": "Publication:jeschke-2011-est", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-est/jeschke-2011-est-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-est/jeschke-2011-est-paper:thumb{{size}}.png" }, { "description": "Video", "filetitle": "Video", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 600, "preview_image_height": 600, "name": "jeschke-2011-est-Video.avi", "type": "video/x-msvideo", "size": 42400848, "path": "Publication:jeschke-2011-est", "preview_name": "jeschke-2011-est-Video:preview.png", "preview_type": "image/jpeg", "preview_size": 21887, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-est/jeschke-2011-est-Video.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-est/jeschke-2011-est-Video:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-est/jeschke-2011-est-Video:video.mp4" }, { "description": "Binary of the Textured Diffusion Curves Viewer and Editor (about 4MB)", "filetitle": "ViewerBinary", "main_file": false, "use_in_gallery": false, "access": "public", "name": "jeschke-2011-est-ViewerBinary.zip", "type": "application/zip", "size": 4076615, "path": "Publication:jeschke-2011-est", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-est/jeschke-2011-est-ViewerBinary.zip", "thumb_image_sizes": [] } ], "projects_workgroups": [ "Desiree" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-est/", "__class": "Publication" }, { "id": "Carata_2011_IVE", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Improving the Visualization of Electron-Microscopy Data Through Optical Flow Interpolation", "date": "2011-04", "abstract": "Technical developments in neurobiology have reached a point\r\nwhere the acquisition of high resolution images representing individual\r\nneurons and synapses becomes possible. For this, the brain\r\ntissue samples are sliced using a diamond knife and imaged with\r\nelectron-microscopy (EM). However, the technique achieves a low\r\nresolution in the cutting direction, due to limitations of the mechanical\r\nprocess, making a direct visualization of a dataset difficult. We\r\naim to increase the depth resolution of the volume by adding new\r\nimage slices interpolated from the existing ones, without requiring\r\nmodifications to the EM image-capturing method. As classical interpolation\r\nmethods do not provide satisfactory results on this type\r\nof data, the current paper proposes a re-framing of the problem in\r\nterms of motion volumes, considering the depth axis as a temporal\r\naxis. An optical flow method is adapted to estimate the motion\r\nvectors of pixels in the EM images, and this information is used\r\nto compute and insert multiple new images at certain depths in the\r\nvolume. We evaluate the visualization results in comparison with\r\ninterpolation methods currently used on EM data, transforming the\r\nhighly anisotropic original dataset into a dataset with a larger depth\r\nresolution. The interpolation based on optical flow better reveals\r\nneurite structures with realistic undistorted shapes, and helps to easier\r\nmap neuronal connections.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 981, 871, 226, 166 ], "booktitle": "Proceedings of the 27th Spring Conference on Computer Graphics", "date_from": "2011-04-27", "date_to": "2011-04-30", "lecturer": [ 981 ], "location": "Viničné, Slovak Republic", "organization": "Spring Conference on Computer Graphics", "pages_from": "1", "pages_to": "8", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Carata_2011_IVE-Paper.pdf", "type": "application/pdf", "size": 1897702, "path": "Publication:Carata_2011_IVE", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Carata_2011_IVE/Carata_2011_IVE-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Carata_2011_IVE/Carata_2011_IVE-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Carata_2011_IVE/", "__class": "Publication" }, { "id": "patel-2011-PEA", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "PhD Education Through Apprenticeship", "date": "2011-04", "abstract": "We describe and analyze the PhD education in the visualization group at the Vienna University of Technology and\r\nset the education in a larger perspective. Four central mechanisms drive the PhD education in Vienna. They are:\r\nto require an article-based PhD; to give the student freedom to choose research direction; to let students work in\r\nshared offices towards joint deadlines; and to involve students in reviewing articles. This paper describes these\r\nmechanisms in detail and illustrates their effect.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "Image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 688, "image_height": 768, "name": "patel-2011-PEA-Image.jpg", "type": "image/jpeg", "size": 386820, "path": "Publication:patel-2011-PEA", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/patel-2011-PEA/patel-2011-PEA-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/patel-2011-PEA/patel-2011-PEA-Image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 616, 166, 161 ], "booktitle": "Proceedings of Eurographics 2011 - Education Papers", "date_from": "2011-04-11", "date_to": "2011-04-15", "editor": "S. Maddock, J. Jorge", "lecturer": [ 616 ], "location": "Llandudno, United Kingdom", "pages_from": "23", "pages_to": "28", "research_areas": [], "keywords": [ "meister", "education", "visualization", "apprenticeship" ], "weblinks": [], "files": [ { "description": "", "filetitle": "Image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 688, "image_height": 768, "name": "patel-2011-PEA-Image.jpg", "type": "image/jpeg", "size": 386820, "path": "Publication:patel-2011-PEA", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/patel-2011-PEA/patel-2011-PEA-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/patel-2011-PEA/patel-2011-PEA-Image:thumb{{size}}.png" }, { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "patel-2011-PEA-Paper.pdf", "type": "application/pdf", "size": 108383, "path": "Publication:patel-2011-PEA", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/patel-2011-PEA/patel-2011-PEA-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/patel-2011-PEA/patel-2011-PEA-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/patel-2011-PEA/", "__class": "Publication" }, { "id": "lipp2011a", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Interactive Modeling of City Layouts using Layers of Procedural Content", "date": "2011-04", "abstract": "In this paper, we present new solutions for the interactive modeling of city layouts that combine the power of procedural modeling with the flexibility of manual modeling. Procedural modeling enables us to quickly generate large city layouts, while manual modeling allows us to hand-craft every aspect of a city. We introduce transformation and merging operators for both topology preserving and topology changing transformations based on graph cuts. In combination with a layering system, this allows intuitive manipulation of urban layouts using operations such as drag and drop, translation, rotation etc. In contrast to previous work, these operations always generate valid, i.e., intersection-free layouts. Furthermore, we introduce anchored assignments to make sure that modifications are persistent even if the whole urban layout is regenerated.\n", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "merged", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1282, "image_height": 1028, "name": "lipp2011a-merged.png", "type": "image/png", "size": 1963167, "path": "Publication:lipp2011a", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/lipp2011a/lipp2011a-merged.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/lipp2011a/lipp2011a-merged:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 680, 452, 194, 193 ], "date_from": "2011-04-11", "date_to": "2011-04-15", "event": "Eurographics 2011", "issn": "0167-7055", "journal": "Computer Graphics Forum (Proceedings EG 2011)", "lecturer": [ 193 ], "location": "Llandudno, UK", "number": "2", "pages_from": "345", "pages_to": "354", "volume": "30", "research_areas": [ "Modeling" ], "keywords": [], "weblinks": [], "files": { "0": { "description": null, "filetitle": "draft", "main_file": true, "use_in_gallery": false, "access": "public", "name": "lipp2011a-draft.pdf", "type": "application/pdf", "size": 2710173, "path": "Publication:lipp2011a", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/lipp2011a/lipp2011a-draft.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/lipp2011a/lipp2011a-draft:thumb{{size}}.png" }, "1": { "description": null, "filetitle": "fast forward movie", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 1024, "preview_image_height": 768, "name": "lipp2011a-fast forward movie.mov", "type": "video/quicktime", "size": 77835362, "path": "Publication:lipp2011a", 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"image/jpeg", "preview_size": 39928, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/lipp2011a/lipp2011a-video.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/lipp2011a/lipp2011a-video:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2011/lipp2011a/lipp2011a-video:video.mp4" } }, "projects_workgroups": [ "GAMEWORLD" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/lipp2011a/", "__class": "Publication" }, { "id": "knecht_martin-2011-FPSPAR", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "A Framework For Perceptual Studies In Photorealistic Augmented Reality", "date": "2011-03", "abstract": "In photorealistic augmented reality virtual objects are integrated in the real world in a seamless visual manner. To obtain a perfect visual augmentation these objects must be rendered indistinguishable from real objects and should be perceived as such. In this paper we propose a research test bed framework to study the different unresolved perceptual issues in photorealistic augmented reality and its application to different disciplines. The framework computes a global illumination approximation in real-time and therefore leverages a new class of experimental research topics.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Shows a participant performing the experiment", "filetitle": "image2", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1000, "image_height": 664, "name": "knecht_martin-2011-FPSPAR-image2.JPG", "type": "image/jpeg", "size": 459755, "path": "Publication:knecht_martin-2011-FPSPAR", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/knecht_martin-2011-FPSPAR/knecht_martin-2011-FPSPAR-image2.JPG", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/knecht_martin-2011-FPSPAR/knecht_martin-2011-FPSPAR-image2:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 736, 917, 237, 193, 916 ], "booktitle": "Proceedings of the 3rd IEEE VR 2011 Workshop on Perceptual Illusions in Virtual Environments", "date_from": "2011-03-19", "date_to": "2011-03-19", "editor": "Frank Steinicke, Pete Willemsen", "lecturer": [ 736 ], "location": "Singapore", "pages_from": "27", "pages_to": "32", "research_areas": [ "Rendering" ], "keywords": [ "photorealistic augmented reality", "real-time global illumination", "human perception" ], "weblinks": [], "files": [ { "description": "This image shows the augmented scene of our experiment including shadows and color bleeding", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 791, "image_height": 591, "name": "knecht_martin-2011-FPSPAR-image.jpg", "type": "image/jpeg", "size": 353116, "path": "Publication:knecht_martin-2011-FPSPAR", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/knecht_martin-2011-FPSPAR/knecht_martin-2011-FPSPAR-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": 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664, "name": "knecht_martin-2011-FPSPAR-image2.JPG", "type": "image/jpeg", "size": 459755, "path": "Publication:knecht_martin-2011-FPSPAR", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/knecht_martin-2011-FPSPAR/knecht_martin-2011-FPSPAR-image2.JPG", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/knecht_martin-2011-FPSPAR/knecht_martin-2011-FPSPAR-image2:thumb{{size}}.png" }, { "description": "Shows the three different rendering modes", "filetitle": "image3", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1800, "image_height": 600, "name": "knecht_martin-2011-FPSPAR-image3.tif", "type": "image/tiff", "size": 3268924, "path": "Publication:knecht_martin-2011-FPSPAR", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/knecht_martin-2011-FPSPAR/knecht_martin-2011-FPSPAR-image3.tif", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": 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null, "repositum_id": null, "title": "Weighted Mesh Simplification of 3D Triangular Surfaces", "date": "2011-03", "abstract": "Representing huge triangular datasets in a real-time rendering \r\nenvironment is a challenge receiving continuous attention. There is a \r\ngrowing complexity of geometric meshes on the one hand and increasing \r\ncomputational power of graphics hardware on the other hand. Although \r\nhardware acceleration is very powerful, simplification using software is \r\nmuch cheaper and more flexible.\r\nAdditionally, for a large class of geometric models, simplification can \r\nbe performed as a preprocessing step that does not need to run in real-time.\r\nThe underlying theory of this diploma thesis is based on mesh \r\nsimplification using quadric error metrics. This algorithm was first \r\npublished by Michael Garland. It was implemented into Aardvark, a \r\nsophisticated rendering framework. It contains a comprehensive set of \r\nlibraries dealing with data structures in general and polygonal mesh \r\ndata structures in particular.\r\nThe application takes a triangulated mesh as input and iteratively \r\ncreates a more and more simplified approximation by weighting and \r\ncollapsing suitable mesh areas. Some surface details will be lost, but \r\nthe overall shape of the model will be preserved. The presented code can \r\nhandle models by preprocessing static, closed triangular meshes. The \r\niterative computation stops if an user specified percentage of the \r\noriginal mesh size is reached.\r\nA further improvement in a later research project will try to add vertex\r\ncolors and texture coordinates to the simplification procedure.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 503, "image_height": 353, "name": "NK_2011-image.jpg", "type": "image/jpeg", "size": 28708, "path": "Publication:NK_2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/NK_2011/NK_2011-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/NK_2011/NK_2011-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 911 ], "supervisor": [ 190, 216 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 503, "image_height": 353, "name": "NK_2011-image.jpg", "type": "image/jpeg", "size": 28708, "path": "Publication:NK_2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/NK_2011/NK_2011-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/NK_2011/NK_2011-image:thumb{{size}}.png" }, { "description": "", "filetitle": "Poster", "main_file": true, "use_in_gallery": false, "access": "public", "name": "NK_2011-Poster.pdf", "type": "application/pdf", "size": 3334902, "path": "Publication:NK_2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/NK_2011/NK_2011-Poster.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/NK_2011/NK_2011-Poster:thumb{{size}}.png" }, { "description": "", "filetitle": "Thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "NK_2011-Thesis.pdf", "type": "application/pdf", "size": 3478176, "path": "Publication:NK_2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/NK_2011/NK_2011-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/NK_2011/NK_2011-Thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/NK_2011/", "__class": "Publication" }, { "id": "Gan-2011-ICU", "type_id": "poster", "tu_id": null, "repositum_id": null, "title": "Interactive Visual Analysis of a large ICU database - a novel approach to data analysis", "date": "2011-03", "abstract": "ICUs generate vast amounts of valuable data. The size and complexity of the data make analysis technically demanding and time-consuming. We used interactive visual analysis (IVA) to analyse a large ICU database using the association between sodium and mortality as a case study. ", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 937, 235, 748, 190, 938, 939 ], "date_from": "2011-03-22", "date_to": "2011-03-25", "event": "31st International Symposium on Intensive Care and Emergency Medicine", "issn": "1364-8535", "journal": "Critical Care", "lecturer": [ 937 ], "location": "Brussels, Belgium", "number": "(suppl.1)", "pages_from": "135", "volume": "15", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Gan-2011-ICU-Paper.pdf", "type": "application/pdf", "size": 6360043, "path": "Publication:Gan-2011-ICU", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gan-2011-ICU/Gan-2011-ICU-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gan-2011-ICU/Gan-2011-ICU-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "VRVis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Gan-2011-ICU/", "__class": "Publication" }, { "id": "Muigg_2011_ISI", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Interactive Seismic Interpretation with Piecewise Global Energy Minimization", "date": "2011-03", "abstract": "Increasing demands in world-wide energy consumption and oil depletion\r\nof large reservoirs have resulted in the need for exploring\r\nsmaller and more complex oil reservoirs. Planning of the reservoir\r\nvalorization usually starts with creating a model of the subsurface\r\nstructures, including seismic faults and horizons. However, seismic\r\ninterpretation and horizon tracing is a difficult and error-prone task,\r\noften resulting in hours of work needing to be manually repeated.\r\nIn this paper, we propose a novel, interactive workflow for horizon\r\ninterpretation based on well positions, which include additional geological\r\nand geophysical data captured by actual drillings. Instead\r\nof interpreting the volume slice-by-slice in 2D, we propose 3D seismic\r\ninterpretation based on well positions. We introduce a combination\r\nof 2D and 3D minimal cost path and minimal cost surface\r\ntracing for extracting horizons with very little user input. By processing\r\nthe volume based on well positions rather than slice-based,\r\nwe are able to create a piecewise optimal horizon surface at interactive\r\nrates. We have integrated our system into a visual analysis\r\nplatform which supports multiple linked views for fast verification,\r\nexploration and analysis of the extracted horizons. The system is\r\ncurrently being evaluated by our collaborating domain experts.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 963, 818, 947, 662, 212, 964, 226 ], "booktitle": "Proceedings of IEEE Pacific Visualization 2011", "date_from": "2011-03-01", "date_to": "2011-03-04", "isbn": " 978-1-61284-935-5 ", "lecturer": [ 963 ], "location": "Hong Kong", "organization": "The 4th IEEE Pacific Visualization Symposium (PacificVis 2011)", "pages_from": "59", "pages_to": "66", "publisher": "IEEE Pacific Visualization 2011", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Muigg_2011_ISI-Paper.pdf", "type": "application/pdf", "size": 6377696, "path": "Publication:Muigg_2011_ISI", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Muigg_2011_ISI/Muigg_2011_ISI-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Muigg_2011_ISI/Muigg_2011_ISI-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Muigg_2011_ISI/", "__class": "Publication" }, { "id": "bittner-2011-scc", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Shadow Caster Culling for Efficient Shadow Mapping", "date": "2011-02", "abstract": "We propose a novel method for efficient construction of shadow maps by culling shadow casters which do not contribute to visible shadows. The method uses a mask of potential shadow receivers to cull shadow casters using a hierarchical occlusion culling algorithm. We propose several variants of the receiver mask implementations with different culling efficiency and computational costs.\nFor scenes with statically focused shadow maps we designed an efficient strategy to incrementally update the shadow map, which comes close to the rendering performance for unshadowed scenes. We show that our method achieves 3x-10x speedup for rendering large city like scenes and 1.5x-2x speedup for rendering an actual game scene.", "authors_et_al": false, "substitute": null, "main_image": { "description": "shadows", "filetitle": "image-l4d", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1273, "image_height": 691, "name": "bittner-2011-scc-image-l4d.png", "type": "image/png", "size": 1306467, "path": "Publication:bittner-2011-scc", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-image-l4d.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-image-l4d:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 198, 326, 897, 193 ], "booktitle": "Proceedings of the ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games 2011", "date_from": "2011-02-18", "date_to": "2011-02-20", "isbn": "978-1-4503-0565-5", "lecturer": [ 198 ], "location": "San Francisco", "organization": "ACM SIGGRAPH", "pages_from": "81", "pages_to": "88", "publisher": "ACM", "research_areas": [ "Rendering" ], "keywords": [ "occlusion culling", "shadow mapping" ], "weblinks": [], "files": { "0": { "description": null, "filetitle": "draft", "main_file": true, "use_in_gallery": false, "access": "public", "name": "bittner-2011-scc-draft.pdf", "type": "application/pdf", "size": 2530764, "path": "Publication:bittner-2011-scc", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-draft.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-draft:thumb{{size}}.png" }, "2": { "description": "shadows", "filetitle": "image-l4d", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1273, 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"https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-image-lightview:thumb{{size}}.png" }, "4": { "description": "lispsm", "filetitle": "image-masking", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1600, "image_height": 1254, "name": "bittner-2011-scc-image-masking.png", "type": "image/png", "size": 304042, "path": "Publication:bittner-2011-scc", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-image-masking.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-image-masking:thumb{{size}}.png" }, "5": { "description": "manhattan", "filetitle": "image-newyork", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1600, "image_height": 1280, "name": "bittner-2011-scc-image-newyork.png", "type": "image/png", "size": 977441, "path": "Publication:bittner-2011-scc", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-image-newyork.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-image-newyork:thumb{{size}}.png" }, "6": { "description": "video", "filetitle": "l4dead", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 960, "preview_image_height": 720, "name": "bittner-2011-scc-l4dead.wmv", "type": "text/plain", "size": 97819412, "path": "Publication:bittner-2011-scc", "preview_name": "bittner-2011-scc-l4dead:preview.png", "preview_type": "image/jpeg", "preview_size": 31844, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-l4dead.wmv", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-l4dead:thumb{{size}}.png" }, "7": { "description": "all-scenes-walkthrough", "filetitle": "video-casterculling", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 800, "preview_image_height": 600, "name": "bittner-2011-scc-video-casterculling.avi", "type": "video/x-msvideo", "size": 82113594, "path": "Publication:bittner-2011-scc", "preview_name": "bittner-2011-scc-video-casterculling:preview.png", "preview_type": "image/jpeg", "preview_size": 28542, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-video-casterculling.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-video-casterculling:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-video-casterculling:video.mp4" } }, "projects_workgroups": [ "GPV" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/", "__class": "Publication" }, { "id": "scherzer2011d", "type_id": "journalpaper_notalk", "tu_id": null, "repositum_id": null, "title": "A Survey of Real-Time Hard Shadow Mapping Methods", "date": "2011-02", "abstract": "Due to its versatility, speed and robustness, shadow mapping has always been a popular algorithm for fast hard shadow generation since its introduction in 1978, first for off-line film productions and later increasingly so in real-time graphics.\nSo it is not surprising that recent years have seen an explosion in the number of shadow map related publications. The last survey that encompassed shadow mapping approaches, but was mainly focused on soft shadow generation, dates back to 2003~cite{HLHS03}, while the last survey for general shadow generation dates back to 1990~cite{Woo:1990:SSA}. No survey that describes all the advances made in hard shadow map generation in recent years exists.\n\nOn the other hand, shadow mapping is widely used in the game industry, in production, and in many other applications, and it is the basis of many soft shadow algorithms. Due to the abundance of articles on the topic, it has become very hard for practitioners and researchers to select a suitable shadow algorithm, and therefore many applications miss out on the latest high-quality shadow generation approaches. \nThe goal of this survey is to rectify this situation by providing a detailed overview of this field. We provide a detailed analysis of shadow mapping errors and derive a comprehensive classification of the existing methods. We discuss the most influential algorithms, consider their benefits and shortcomings and thereby provide the readers with the means to choose the shadow algorithm best suited to their needs.\n", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "depthBiasSketch", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 718, "image_height": 720, "name": "scherzer2011d-depthBiasSketch.png", "type": "image/png", "size": 33344, "path": "Publication:scherzer2011d", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011d/scherzer2011d-depthBiasSketch.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011d/scherzer2011d-depthBiasSketch:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 452, 193, 190 ], "issn": "0167-7055", "journal": "Computer Graphics Forum", "number": "1", "pages_from": "169", "pages_to": "186", "volume": "30", "research_areas": [ "Rendering" ], "keywords": [], "weblinks": [], "files": [ { "description": null, "filetitle": "depthBiasSketch", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 718, "image_height": 720, "name": "scherzer2011d-depthBiasSketch.png", "type": "image/png", "size": 33344, "path": "Publication:scherzer2011d", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011d/scherzer2011d-depthBiasSketch.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011d/scherzer2011d-depthBiasSketch:thumb{{size}}.png" }, { "description": null, "filetitle": "IrregularSamplingEye", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 960, "image_height": 720, "name": "scherzer2011d-IrregularSamplingEye.png", "type": "image/png", "size": 35795, "path": 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"https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011d/scherzer2011d-ShadowGeometry:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011d/", "__class": "Publication" }, { "id": "Habel_LSN_2011", "type_id": "inbook", "tu_id": null, "repositum_id": null, "title": "Level-of-Detail and Streaming Optimized Irradiance Normal Mapping", "date": "2011-02", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1280, "image_height": 768, "name": "Habel_LSN_2011-.png", "type": "image/png", "size": 1449599, "path": "Publication:Habel_LSN_2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Habel_LSN_2011/Habel_LSN_2011-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": 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Peters", "research_areas": [ "Rendering" ], "keywords": [], "weblinks": [], "files": [ { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1280, "image_height": 768, "name": "Habel_LSN_2011-.png", "type": "image/png", "size": 1449599, "path": "Publication:Habel_LSN_2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Habel_LSN_2011/Habel_LSN_2011-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Habel_LSN_2011/Habel_LSN_2011-:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Habel_LSN_2011/", "__class": "Publication" }, { "id": "marek-2011-normalest", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Normal Estimation of Very Large Point Clouds", "date": "2011-02", "abstract": "This diploma thesis introduces methods for external sorting and fast k nearest\r\nneighbor searching for very large point clouds. Very large point clouds are datasets\r\nthat can not be processed in main memory. This leads to certain requirements for\r\nany used reconstruction technique. The most important ones are out-of-core memory\r\nmanagement and sequential data handling algorithms. The paper “Stream-\r\nProcessing Points” by Renato Pajarola shows a way to design a framework which\r\nallows to process a subset of very large point clouds. A subset is defined as a\r\nspatially continuous region holding a predefined number of points. This diploma\r\nthesis is based on the aforementioned paper and improves on the stream processing\r\npipeline presented therein. The proposed algorithm for searching the k nearest\r\nneighbors has a complexity of O(N \u0003 log(M)), where N are all points in the point\r\ncloud and M are all points in main memory, which is similar to current state of the\r\nart algorithms for in-core processed data sets.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Normals estimated in the Domitilla Catacomb model with approximately 2 billion points.", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1098, "image_height": 760, "name": "marek-2011-normalest-image.png", "type": "image/png", "size": 1270924, "path": "Publication:marek-2011-normalest", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/marek-2011-normalest/marek-2011-normalest-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/marek-2011-normalest/marek-2011-normalest-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 653 ], "date_start": "2007-07-23", "matrikelnr": "0026455", "supervisor": [ 614, 193 ], "research_areas": [], "keywords": [ "Out-of-Core algorithms", "Point-based rendering", "Normal estimation" ], "weblinks": [], "files": [ { "description": "Normals estimated in the Domitilla Catacomb model with approximately 2 billion points.", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1098, "image_height": 760, "name": "marek-2011-normalest-image.png", "type": "image/png", "size": 1270924, "path": "Publication:marek-2011-normalest", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/marek-2011-normalest/marek-2011-normalest-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/marek-2011-normalest/marek-2011-normalest-image:thumb{{size}}.png" }, { "description": "", "filetitle": "poster", "main_file": true, "use_in_gallery": false, "access": "public", "name": "marek-2011-normalest-poster.pdf", "type": "application/pdf", "size": 4926150, "path": "Publication:marek-2011-normalest", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/marek-2011-normalest/marek-2011-normalest-poster.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/marek-2011-normalest/marek-2011-normalest-poster:thumb{{size}}.png" }, { "description": "The thesis", "filetitle": "thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "marek-2011-normalest-thesis.pdf", "type": "application/pdf", "size": 18538023, "path": "Publication:marek-2011-normalest", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/marek-2011-normalest/marek-2011-normalest-thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/marek-2011-normalest/marek-2011-normalest-thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "TERAPOINTS" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/marek-2011-normalest/", "__class": "Publication" }, { "id": "TK_2011", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Spectral data representation techniques for realistic image synthesis", "date": "2011-02", "abstract": "Digital image synthesis is used in many industrial applications. One goal of this discipline\r\nis the physical correct simulation of natural phenomena such as the color of the blue\r\nsky or refraction in translucent materials. To accomplish this goal the usage of spectral\r\ndata for the representation of color information is indispensable. For this purpose different\r\nmethods were developed over the years. These methods face the challenge of accurately\r\nrepresenting complex data (e.g. fluorescent light sources). My work compares these methods\r\nusing the color difference formula CIEDE2000 as well as a large data set for testing\r\n(NCS atlas), and answers the question whether the application of low pass filters during\r\nsampling rate conversions does, or does not influence the accuracy of the representation\r\nmethods.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "Image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 512, "image_height": 384, "name": "TK_2011-Image.png", "type": "image/png", "size": 134433, "path": "Publication:TK_2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/TK_2011/TK_2011-Image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/TK_2011/TK_2011-Image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 744 ], "diploma_examina": "2011", "supervisor": [ 190, 567 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "Image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 512, "image_height": 384, "name": "TK_2011-Image.png", "type": "image/png", "size": 134433, "path": "Publication:TK_2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/TK_2011/TK_2011-Image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/TK_2011/TK_2011-Image:thumb{{size}}.png" }, { "description": "", "filetitle": "Thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "TK_2011-Thesis.pdf", "type": "application/pdf", "size": 8093178, "path": "Publication:TK_2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/TK_2011/TK_2011-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/TK_2011/TK_2011-Thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/TK_2011/", "__class": "Publication" }, { "id": "2011scherzerE", "type_id": "inbook", "tu_id": null, "repositum_id": null, "title": "Fast Soft Shadows with Temporal Coherence", "date": "2011-02", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": { "description": "algorithm flowchart", "filetitle": "flowchart", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 2480, "image_height": 2832, "name": "2011scherzerE-flowchart.png", "type": "image/png", "size": 699525, "path": "Publication:2011scherzerE", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/2011scherzerE/2011scherzerE-flowchart.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/2011scherzerE/2011scherzerE-flowchart:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 452, 678, 326 ], "booktitle": "GPU Pro 2", "editor": "Wolfgang Engel", "isbn": "978-1568817187", "pages_from": "243", "pages_to": "255", "publisher": "A.K. Peters", "research_areas": [ "Rendering" ], "keywords": [], "weblinks": [], "files": [ { "description": "algorithm flowchart", "filetitle": "flowchart", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 2480, "image_height": 2832, "name": "2011scherzerE-flowchart.png", "type": "image/png", "size": 699525, "path": "Publication:2011scherzerE", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/2011scherzerE/2011scherzerE-flowchart.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/2011scherzerE/2011scherzerE-flowchart:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/2011scherzerE/", "__class": "Publication" }, { "id": "matt2011", "type_id": "inbook", "tu_id": null, "repositum_id": null, "title": "Temporal Screen-Space Ambient Occlusion", "date": "2011-02", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image-sibenik", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1024, "image_height": 768, "name": "matt2011-image-sibenik.png", "type": "image/png", "size": 891767, "path": "Publication:matt2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/matt2011/matt2011-image-sibenik.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/matt2011/matt2011-image-sibenik:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 326, 452, 193 ], "booktitle": "GPU Pro 2", "editor": "Wolfgang Engel", "isbn": "978-1568817187", "pages_from": "123", "pages_to": "142", "publisher": "A.K. Peters", "research_areas": [ "Rendering" ], "keywords": [ "ambient occlusion" ], "weblinks": [], "files": [ { "description": null, "filetitle": "image-sibenik", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1024, "image_height": 768, "name": "matt2011-image-sibenik.png", "type": "image/png", "size": 891767, "path": "Publication:matt2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/matt2011/matt2011-image-sibenik.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/matt2011/matt2011-image-sibenik:thumb{{size}}.png" }, { "description": "convergence-aware filter", "filetitle": "image-tssao-filter", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 700, "image_height": 640, "name": "matt2011-image-tssao-filter.png", "type": "image/png", "size": 243838, "path": "Publication:matt2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/matt2011/matt2011-image-tssao-filter.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/matt2011/matt2011-image-tssao-filter:thumb{{size}}.png" }, { "description": "no filtering used", "filetitle": "image-tssao-no-filter", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 700, "image_height": 640, "name": "matt2011-image-tssao-no-filter.png", "type": "image/png", "size": 1346876, "path": "Publication:matt2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/matt2011/matt2011-image-tssao-no-filter.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/matt2011/matt2011-image-tssao-no-filter:thumb{{size}}.png" } ], "projects_workgroups": [ "GPV" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/matt2011/", "__class": "Publication" }, { "id": "ohrhallinger_stefan-2011-001", "type_id": "journalpaper_notalk", "tu_id": null, "repositum_id": null, "title": "Interpolating an unorganized 2D point cloud with a single closed shape", "date": "2011-01", "abstract": "Given an unorganized two-dimensional point cloud, we address the problem of efficiently constructing a single aesthetically pleasing closed interpolating shape, without requiring dense or uniform spacing. Using Gestalt’s laws of proximity, closure and good continuity as guidance for visual aesthetics, we require that our constructed shape be a minimal perimeter, non-self intersecting manifold. We find that this yields visually pleasing results. Our algorithm is distinct from earlier shape reconstruction approaches, in that it exploits the overlap between the desired shape and a related minimal graph, the Euclidean Minimum Spanning Tree (EMST). Our algorithm segments the EMST to retain as much of it as required and then locally partitions and solves the problem efficiently. Comparison with some of the best currently known solutions shows that our algorithm yields better results.\n", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "thumbnail", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 856, "image_height": 370, "name": "ohrhallinger_stefan-2011-001-thumbnail.png", "type": "image/png", "size": 93144, "path": "Publication:ohrhallinger_stefan-2011-001", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/ohrhallinger_stefan-2011-001/ohrhallinger_stefan-2011-001-thumbnail.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/ohrhallinger_stefan-2011-001/ohrhallinger_stefan-2011-001-thumbnail:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 948, 1024 ], "issn": "0010-4485", "journal": "Computer-Aided Design", "number": "1", "pages_from": "1629", "pages_to": "1638", "volume": "43", "research_areas": [ "Geometry" ], "keywords": [ "EMST", "Curve", "Point cloud", "Reconstruction", "Shape Construction", "Boundary", "Computational geometry", "Point set" ], "weblinks": [ { "href": "http://www.cg.tuwien.ac.at/~stef/ohrhallinger11_Interpolating%20an%20unorganized%202D%20point%20cloud%20with%20a%20single%20closed%20shape_PREPRINT.pdf", "caption": null, "description": null, "main_file": 0 } ], "files": [ { "description": "Reconstruction of 2D Point Cloud", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "ohrhallinger_stefan-2011-001-paper.pdf", "type": "application/pdf", "size": 1137154, "path": "Publication:ohrhallinger_stefan-2011-001", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/ohrhallinger_stefan-2011-001/ohrhallinger_stefan-2011-001-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/ohrhallinger_stefan-2011-001/ohrhallinger_stefan-2011-001-paper:thumb{{size}}.png" }, { "description": null, "filetitle": "thumbnail", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 856, "image_height": 370, "name": "ohrhallinger_stefan-2011-001-thumbnail.png", "type": "image/png", "size": 93144, "path": "Publication:ohrhallinger_stefan-2011-001", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/ohrhallinger_stefan-2011-001/ohrhallinger_stefan-2011-001-thumbnail.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/ohrhallinger_stefan-2011-001/ohrhallinger_stefan-2011-001-thumbnail:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/ohrhallinger_stefan-2011-001/", "__class": "Publication" }, { "id": "vucini-2011", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Enhancing Visualization with Real-Time Frequency-based Transfer Functions", "date": "2011-01", "abstract": "Transfer functions have a crucial role in the understanding and visualization of 3D data. While research has\r\nscrutinized the possible uses of one and multi-dimensional transfer functions in the spatial domain, to our\r\nknowledge, no attempt has been done to explore transfer functions in the frequency domain. In this work we\r\npropose transfer functions for the purpose of frequency analysis and visualization of 3D data. Frequency-based\r\ntransfer functions offer the possibility to discriminate signals, composed from different frequencies, to analyze\r\nproblems related to signal processing, and to help understanding the link between the modulation of specific\r\nfrequencies and their impact on the spatial domain. We demonstrate the strength of frequency-based transfer\r\nfunctions by applying them to medical CT, ultrasound and MRI data, physics data as well as synthetic seismic\r\ndata. The interactive design of complex filters for feature enhancement can be a useful addition to conventional\r\nclassification techniques.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 520, "image_height": 419, "name": "vucini-2011-image.jpg", "type": "image/jpeg", "size": 99382, "path": "Publication:vucini-2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/vucini-2011/vucini-2011-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/vucini-2011/vucini-2011-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 636, 616, 166 ], "booktitle": "Proceedings of IS&T/SPIE Conference on Visualization and Data Analysis", "date_from": "2011-01-23", "date_to": "2011-01-27", "isbn": "978-0-8194-8405-5", "lecturer": [ 636 ], "location": "San Francisco, USA", "organization": "IS&T/SPIE", "pages_from": "78680L-1", "pages_to": "78680L-12", "series": "7868", "research_areas": [], "keywords": [ "Real Time", "Data Enhancement", "Frequency Analysis", "Transfer Function", "Volume Rendering" ], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 520, "image_height": 419, "name": "vucini-2011-image.jpg", "type": "image/jpeg", "size": 99382, "path": "Publication:vucini-2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/vucini-2011/vucini-2011-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/vucini-2011/vucini-2011-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "vucini-2011-paper.pdf", "type": "application/pdf", "size": 5492510, "path": "Publication:vucini-2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/vucini-2011/vucini-2011-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/vucini-2011/vucini-2011-paper:thumb{{size}}.png" }, { "description": "", "filetitle": "video", "main_file": true, "use_in_gallery": false, "access": "public", "preview_image_width": 1588, "preview_image_height": 780, "name": "vucini-2011-video.avi", "type": "video/x-msvideo", "size": 3856600, "path": "Publication:vucini-2011", "preview_name": "vucini-2011-video:preview.png", "preview_type": "image/jpeg", "preview_size": 45746, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/vucini-2011/vucini-2011-video.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/vucini-2011/vucini-2011-video:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2011/vucini-2011/vucini-2011-video:video.mp4" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/vucini-2011/", "__class": "Publication" }, { "id": "sollboeck-2011", "type_id": "studentproject", "tu_id": null, "repositum_id": null, "title": "jukebomb.me", "date": "2011", "abstract": "What is it?\nJukebomb.me is meant to be used at private parties to collaboratively watch youtube videos. \nGo to http://www.jukebomb.me to see it in action.\nYou can queue new youtube videos, or use the shake function on your phone to make the running video go away! You can also send messages to the page, that everybody can read your thoughts about the videos. \n\nWhat is the meaning of \"Juke Bomb\"?\nAccording to urbandictionary.com: An act of social terrorism that culminates in the art of singing a song with the full intention of infecting listeners brains for the remainder of the day with a melody that won’t go away short of lobotomizing surgery. \n\nWhat's behind the scenes?\nThe smartphones connect to the webpage using the XMPP-protocol. We used the smack library on the Android side and the strophe library for the web page. ", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1048, "image_height": 634, "name": "sollboeck-2011-.PNG", "type": "image/png", "size": 696476, "path": "Publication:sollboeck-2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/sollboeck-2011/sollboeck-2011-.PNG", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/sollboeck-2011/sollboeck-2011-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 931 ], "supervisor": [ 488 ], "research_areas": [], "keywords": [ "Android", "XMPP" ], "weblinks": [], "files": [ { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1048, "image_height": 634, "name": "sollboeck-2011-.PNG", "type": "image/png", "size": 696476, "path": "Publication:sollboeck-2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/sollboeck-2011/sollboeck-2011-.PNG", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/sollboeck-2011/sollboeck-2011-:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/sollboeck-2011/", "__class": "Publication" }, { "id": "Groeller_2011_CVC", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "Comprehensive Visualization\u000bof Cardiac MRI Data", "date": "2011", "abstract": "Coronary artery disease is one of the leading causes of death in the western world. The continuous improvements in magnetic resonance imaging (MRI) technology facilitate more accurate diagnoses by providing increasingly more detailed information on the viability, functioning, perfusion, and anatomy of a patient’s heart. The talk covers several techniques that realize multi-modal visualizations of a patient’s heart to assist in the diagnosis of coronary artery disease . A volumetric bull’s eye offers a more comprehensive view on the viability of a patient’s heart by providing detailed information on the transmurality of scar while not suffering from discontinuities. Anatomical context is often lost due to abstract representations of data, or may be scarce due to the nature of the scanning protocol. Several techniques to restore the relation to anatomy are presented. The primary coronary arteries are segmented in a whole heart scan and mapped onto a volumetric bull’s eye plot, adding anatomical context to an abstract representation. Similarly, segmented late enhancement data are rendered along with a three-dimensional segmentation of the patient-specific myocardial and coronary anatomy. Additionally, coronary supply territories are computed from patient-specific data as an improvement over models based on population averages. Information on the perfusion of the myocardium provided by MRI is typically of fairly low resolution. Using high-resolution anatomical data, an approach to visualize simulated myocardial perfusion is presented, taking full advantage of the detailed information on perfusion. Finally, a truly comprehensive visualization of a cardiac MRI exam is explored by combining whole heart, late enhancement, functional, and perfusion scans in a single visualization.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 166 ], "date_from": "2011-08-28", "date_to": "2011-09-02", "event": "Workshop Geometry for Anatomy, Banff International Research Station for Mathematical Innovation and Discovery (BIRS)", "location": "Banff, Canada", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_CVC/", "__class": "Publication" }, { "id": "scherzer2011c", "type_id": "otherreviewed", "tu_id": null, "repositum_id": null, "title": "A Survey on Temporal Coherence Methods in Real-Time Rendering", "date": "2011", "abstract": "Nowadays, there is a strong trend towards rendering to higher-resolution displays and at high frame rates. This development aims at delivering more detail and better accuracy, but it also comes at a significant cost.\nAlthough graphics cards continue to evolve with an ever-increasing amount of computational power, the processing gain is counteracted to a high degree by increasingly complex and sophisticated pixel computations. For real-time applications, the direct consequence is that image resolution and temporal resolution are often the first candidates to bow to the performance constraints (e.g., although full HD is possible, PS3 and XBox often render at lower resolutions).\n\nIn order to achieve high-quality rendering at a lower cost, one can exploit emph{temporal coherence} (TC). The underlying observation is that a higher resolution and frame rate do not necessarily imply a much higher workload, but a larger amount of redundancy and a higher potential for amortizing rendering over several frames. In this STAR, we will investigate methods that make use of this principle and provide practical and theoretical advice on how to exploit temporal coherence for performance optimization. These methods not only allow us to incorporate more computationally intensive shading effects into many existing applications, but also offer exciting opportunities for extending high-end graphics applications to lower-spec consumer-level hardware.\n\nTo this end, we first introduce the notion and main concepts of TC, including an overview of historical methods. We then describe a key data structure, the so-called emph{reprojection cache}, with several supporting algorithms that facilitate reusing shading information from previous frames. Its usefulness is illustrated in the second part of the STAR, where we present various applications. We illustrate how expensive pixel shaders, multi-pass shading effects, stereo rendering, shader antialiasing, shadow casting, and global-illumination effects can profit from pixel reuse. Furthermore, we will see that optimizations for visibility culling and object-space global illumination can also be achieved by exploiting TC.\n\nThis STAR enables the reader to gain an overview of many techniques in this cutting-edge field and provides many insights into algorithmic choices and implementation issues. It delivers working knowledge of how various existing techniques are optimized via data reuse. Another goal of this STAR is to inspire the reader and to raise awareness for temporal coherence as an elegant tool that could be a crucial component to satisfy the recent need for higher resolution and more detailed content.\n", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1024, "image_height": 768, "name": "scherzer2011c-.png", "type": "image/png", "size": 883179, "path": "Publication:scherzer2011c", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011c/scherzer2011c-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011c/scherzer2011c-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 452, 868, 326, 899, 900, 193, 823 ], "booktitle": "EUROGRAPHICS 2011 State of the Art Reports", "location": "Llandudno UK", "pages_from": "101", "pages_to": "126", "publisher": "Eurographics Association", "research_areas": [ "Rendering" ], "keywords": [], "weblinks": [], "files": [ { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1024, "image_height": 768, "name": "scherzer2011c-.png", "type": "image/png", "size": 883179, "path": "Publication:scherzer2011c", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011c/scherzer2011c-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011c/scherzer2011c-:thumb{{size}}.png" }, { "description": null, "filetitle": "2", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1024, "image_height": 821, "name": "scherzer2011c-2.png", "type": "image/png", "size": 23874, "path": "Publication:scherzer2011c", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011c/scherzer2011c-2.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011c/scherzer2011c-2:thumb{{size}}.png" }, { "description": null, "filetitle": "3", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 707, "image_height": 530, "name": "scherzer2011c-3.png", "type": "image/png", "size": 337791, "path": "Publication:scherzer2011c", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011c/scherzer2011c-3.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011c/scherzer2011c-3:thumb{{size}}.png" }, { "description": null, "filetitle": "4", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 707, "image_height": 530, "name": "scherzer2011c-4.png", "type": "image/png", "size": 290541, "path": "Publication:scherzer2011c", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011c/scherzer2011c-4.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011c/scherzer2011c-4:thumb{{size}}.png" }, { "description": "paper", "filetitle": "pdf", "main_file": true, "use_in_gallery": false, "access": "public", "name": "scherzer2011c-pdf.pdf", "type": "application/pdf", "size": 18828677, "path": "Publication:scherzer2011c", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011c/scherzer2011c-pdf.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011c/scherzer2011c-pdf:thumb{{size}}.png" }, { "description": "eg-slides", "filetitle": "slides", "main_file": false, "use_in_gallery": false, "access": "public", "name": "scherzer2011c-slides.rar", "type": "application/x-rar", "size": 94435406, "path": "Publication:scherzer2011c", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011c/scherzer2011c-slides.rar", "thumb_image_sizes": [] } ], "projects_workgroups": [ "GPV" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/scherzer2011c/", "__class": "Publication" }, { "id": "weiner_2011", "type_id": "studentproject", "tu_id": null, "repositum_id": null, "title": "Easydrawer - A 2D Geometric Construction Tool", "date": "2011", "abstract": "Easydrawer is a graphical computer application which helps users\nto draw 2D constructions as they would do on a sheet of paper using\na pair of compasses, a ruler and a pen. Easydrawer can significantly\nincrease the productivity of geometrical drawers and help in making\nthe construction process transparent to persons who are currently\ntrained in technical drawing.\nThe application comes with some features which specially qualify\nit for educational use. They are mainly: colorization of primitives,\ngradually playing back creation-history, entering author’s\ncomments for each construction step, hiding or highlighting construction\nparts and giving objects a name. Users are able to directly\nuse any paper-construction know-how with this tool. This means\nthat users will not forget how to draw on a sheet of paper.\nIn addition, Easydrawer supports geometric drawers when it comes\nto quality (exactness in distance and angle measurement, calculating\nintersections and completely dirt-free constructions), working\nspeed and simplifying their job (blending-out uninteresting parts of\nthe construction or coloring primitives, for example).\nTo cover all constructions which are possible on a sheet of paper,\nthe following primitives and operations are integrated:\n Primitives: points, lines, circles, text (as a primitive or as description\nof other primitives), splines (for free-hand parts as\nthey are needed to draw ellipses or parables, for example) and\nareas (for shadow simulation).\n Operations: intersection of two lines, line and circle or two\ncircles, changing visibility mode of primitives and coloring\nprimitives.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 800, "image_height": 675, "name": "weiner_2011-image.jpg", "type": "image/jpeg", "size": 100131, "path": "Publication:weiner_2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/weiner_2011/weiner_2011-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/weiner_2011/weiner_2011-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 904 ], "date_end": "2011", "date_start": "2011", "matrikelnr": "e0525190", "supervisor": [ 636 ], "research_areas": [ "Modeling" ], "keywords": [ "Point", "Ruler-and-compass construction", "Geometrical drawing tool" ], "weblinks": [], "files": [ { "description": null, "filetitle": "Bachelor Thesis", "main_file": false, "use_in_gallery": false, "access": "public", "name": "weiner_2011-Bachelor Thesis.pdf", "type": "application/pdf", "size": 3798659, "path": "Publication:weiner_2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/weiner_2011/weiner_2011-Bachelor Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/weiner_2011/weiner_2011-Bachelor Thesis:thumb{{size}}.png" }, { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 800, "image_height": 675, "name": "weiner_2011-image.jpg", "type": "image/jpeg", "size": 100131, "path": "Publication:weiner_2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/weiner_2011/weiner_2011-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/weiner_2011/weiner_2011-image:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/weiner_2011/", "__class": "Publication" }, { "id": "Groeller_2011_HSU", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "The Haunted Swamps of Uniformity", "date": "2011", "abstract": "Dissemination of scientific results in visualization (like in many other disciplines) through papers and talks follow rather standardized styles and procedures. Given that publishing strategies were very different not so much time ago in the past, and given new technological developments like electronic publishing, ideas of possible future developments are discussed. Topics treated include: increased repeatability through augmenting papers with executables, providing more extensive sensitivity and robustness analyses, paper presentation as drama, poem, comics strip.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 166 ], "date_from": "2011-06-05", "date_to": "2011-06-10", "event": "Seminar 11231, Scientific Visualization, Dagstuhl", "location": "Germany", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_HSU/", "__class": "Publication" }, { "id": "schleicher-2011-VLSC", "type_id": "studentproject", "tu_id": null, "repositum_id": null, "title": "Visual Lesson Scheduling Calender", "date": "2011", "abstract": "", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 982 ], "supervisor": [ 597 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/schleicher-2011-VLSC/", "__class": "Publication" }, { "id": "Groeller_2011_VSS", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "Visual Steering to Support \u000bDecision Making in Visdom", "date": "2011", "abstract": "Computer simulation has become an ubiquitous tool to investigate the nature of systems. When steering a simulation, users modify parameters to study their impact on the simulation outcome. The ability to test alternative options provides the basis for interactive decision making. Increasingly complex simulations are characterized by an intricate interplay of many heterogeneous input and output parameters. A steering concept that combines simulation and visualization within a single, comprehensive system is largely missing. This talk targets the basic components of a novel integrated steering system called Visdom to support the user in the decision making process. The proposed techniques enable users to examine alternative scenarios without the need for special simulation expertise. To accomplish this, we propose World Lines as a management strategy for multiple, related simulation runs. In a dedicated view, users create and navigate through many simulation runs. New decisions are included through the concept of branching. To account for uncertain knowledge about the input parameters, we provide the ability to cover full parameter distributions. Via multiple cursors, users navigate a system of multiple linked views through time and alternative scenarios. In this way, the system supports comparative visual analysis of many simulation runs. Since the steering process generates a huge amount of information, we employ the machine to support the user in the search for explanations inside the computed data. Visdom is built on top of a data-flow network to provide a high level of modularity. A decoupled meta-flow is in charge of transmitting parameter changes from World Lines to the affected dataflow nodes. To direct the user attention to the most relevant parts, we provide dynamic visualization inside the flow diagram. The usefulness of the presented approach is substantiated through case studies in the field of flood management. The Visdom application enables the design of a breach closure by dropping sandbags in a virtual environment.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 166 ], "date_from": "2011-12-02", "event": "Visual Computing Forum", "location": "Bergen, Norway", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_VSS/", "__class": "Publication" }, { "id": "Groeller_2011_VSD", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "Visual Steering to Support Decision Making in Visdom", "date": "2011", "abstract": "", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 166 ], "date_from": "2011-11-02", "date_to": "2011-11-02", "event": "Visual Computing Forum, University of Bergen", "location": "Norway", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [ "vis", "vis", "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_VSD/", "__class": "Publication" }, { "id": "Groeller_2011_VCD", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "Visualization of Complex Data: Going from Linked to Integrated Views ", "date": "2011", "abstract": "Data Visualization uses computer-supported, interactive, visual representations of (abstract) data to amplify cognition. In recent years data complexity has increased tremendously. This is for example due to an increase in data size and dimensionality. New imaging modalities generate quite heterogeneous, multi-valued, multi-modal, and time-varying data. Separate views and linked views are approaches to cope with complexity, but are limited, e.g., concerning scalability. This talk will concentrate especially on integrated views as inspired by traditional illustrations. Integration can be coarse or sparse in space and time. It may even involve different spaces with varying dimensionality and characteristics. The talk will discuss several research examples which go beyond data and image fusion. More details will be given about a specific display of 3D volume data integrated into a 2D graph view.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 166 ], "date_from": "2011-02-22", "event": "Visualisierungsinstitut der Universität Stuttgart (VISUS)", "location": "University of Stuttgart, Germany", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller_2011_VCD/", "__class": "Publication" }, { "id": "Beer_2011_DVE", "type_id": "studentproject", "tu_id": null, "repositum_id": null, "title": "Darstellung von Eishockeystatistiken mit parallelen Koordinatensystemen", "date": "2011", "abstract": "In diesem Projekt wurde die Software \"Parvis\", ein Programm zur Darstellung von parallelen Koordinaten, so erweitert, dass es sich gut zur Darstellung von Eishockeystatistiken eignet. Die Interaktions- und Darstellungsmöglichkeiten wurden dahingehend ausgebaut, dass man interessante Fragestellungen beantworten kann. Besonders wichtig sind die Möglichkeiten des Brushings und des Hervorhebens bestimmter Datensätze. Außerdem können die Achsen so sortiert werden, dass es möglichst wenig Überschneidungen gibt, um die Übersichtlichkeit zu erhöhen.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "Vorschaubild", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1030, "image_height": 756, "name": "Beer_2011_DVE-Vorschaubild.jpg", "type": "image/jpeg", "size": 153412, "path": "Publication:Beer_2011_DVE", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Beer_2011_DVE/Beer_2011_DVE-Vorschaubild.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Beer_2011_DVE/Beer_2011_DVE-Vorschaubild:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 946 ], "matrikelnr": "0655818", "note": "Sehr gut (S1)", "supervisor": [ 166, 179 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Beer_2011_DVE-Paper.pdf", "type": "application/pdf", "size": 1585232, "path": "Publication:Beer_2011_DVE", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Beer_2011_DVE/Beer_2011_DVE-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Beer_2011_DVE/Beer_2011_DVE-Paper:thumb{{size}}.png" }, { "description": "", "filetitle": "Vorschaubild", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1030, "image_height": 756, "name": "Beer_2011_DVE-Vorschaubild.jpg", "type": "image/jpeg", "size": 153412, "path": "Publication:Beer_2011_DVE", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Beer_2011_DVE/Beer_2011_DVE-Vorschaubild.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Beer_2011_DVE/Beer_2011_DVE-Vorschaubild:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Beer_2011_DVE/", "__class": "Publication" }, { "id": "spitaler-afr-2011", "type_id": "studentproject", "tu_id": null, "repositum_id": null, "title": "Advanced Facade Rendering", "date": "2011", "abstract": "Advanced Facade Rendering aims at high-quality rendering of facade-geometry generated by interactive subdivision of a simple facade picture.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 1920, "image_height": 1053, "name": "spitaler-afr-2011-image.jpg", "type": "image/jpeg", "size": 250735, "path": "Publication:spitaler-afr-2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/spitaler-afr-2011/spitaler-afr-2011-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/spitaler-afr-2011/spitaler-afr-2011-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 886 ], "date_end": "2011-02-21", "date_start": "2010-09-01", "matrikelnr": "0226436", "supervisor": [ 844 ], "research_areas": [], "keywords": [ "facade rendering", "urban rendering" ], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 1920, "image_height": 1053, "name": "spitaler-afr-2011-image.jpg", "type": "image/jpeg", "size": 250735, "path": "Publication:spitaler-afr-2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/spitaler-afr-2011/spitaler-afr-2011-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/spitaler-afr-2011/spitaler-afr-2011-image:thumb{{size}}.png" }, { "description": "", "filetitle": "report", "main_file": true, "use_in_gallery": false, "access": "public", "name": "spitaler-afr-2011-report.pdf", "type": "application/pdf", "size": 1139220, "path": "Publication:spitaler-afr-2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/spitaler-afr-2011/spitaler-afr-2011-report.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/spitaler-afr-2011/spitaler-afr-2011-report:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/spitaler-afr-2011/", "__class": "Publication" }, { "id": "stehno-2011-RVD", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Rapid Visualization Development based on Visual Programming", "date": "2011", "abstract": "Over the years, many visualization tools and applications were developed for specific fields of\r\nscience or business. Staying in the alcove of their field, these are highly suited and optimized\r\nfor visualizing specific data, with the drawback of not being flexible enough to extend or alter\r\nthese visualizations for other purposes.\r\n\r\n\r\nOften, customers of such visualization packages cannot extend them, to fit their needs,\r\nespecially if the software is closed source. But even using open source software does not solve\r\nthis problem efficiently, since to extend the software, costumers need to have programming skills\r\nand are often forced to reimplement algorithms or visualizations which already exist, making\r\nrapid development impossible.\r\n\r\n\r\nThe goal of this thesis is to develop a dataflow visual programming language (DFVPL)\r\nand a visual editor for the rapid development of visualizations. With this programming\r\nlanguage, called OpenInsightExplorer, users can develop visualizations by connecting graphical\r\nrepresentations of modules rather than writing source code. Each module represents a part of\r\na visualization program. Modules are designed to function as an independent black box and\r\nthey start to operate as soon as data is sent to them. This black box design and execution model\r\nallows to reuse modules more frequently and simplifies their development.\r\n\r\n\r\nThis programming language and its editor run platform independently to reach a high\r\nnumber of potential programmers, respectively users, to develop visualizations, since they are\r\nnot bound to a specific platform. It is extendable, by means of self developed modules and data\r\ntypes to extend the language. Programming and editing a visualization is easy and fast, even\r\nfor people with only little programming experience. The production cycle of the development\r\nof visualizations is reduced to a minimum. This is achieved by reusing and combining existing\r\nmodules.\r\n\r\n\r\nThe usability of the programming language was evaluated by implementing two example\r\nvisualizations with it. Each example originates from different areas of visualization, therefore\r\ndemanding different data types, data transformation tasks and rendering.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Screenshot of the application", "filetitle": "OpenInsightExplorer", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 600, "image_height": 370, "name": "stehno-2011-RVD-OpenInsightExplorer.jpg", "type": "image/jpeg", "size": 137879, "path": "Publication:stehno-2011-RVD", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/stehno-2011-RVD/stehno-2011-RVD-OpenInsightExplorer.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/stehno-2011-RVD/stehno-2011-RVD-OpenInsightExplorer:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 959 ], "supervisor": [ 597 ], "research_areas": [], "keywords": [ "Rapid Development", "Dataflow Programming", "Visual Programming", "Visualization" ], "weblinks": [], "files": [ { "description": "Screenshot of the application", "filetitle": "OpenInsightExplorer", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 600, "image_height": 370, "name": "stehno-2011-RVD-OpenInsightExplorer.jpg", "type": "image/jpeg", "size": 137879, "path": "Publication:stehno-2011-RVD", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/stehno-2011-RVD/stehno-2011-RVD-OpenInsightExplorer.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/stehno-2011-RVD/stehno-2011-RVD-OpenInsightExplorer:thumb{{size}}.png" }, { "description": "Source code and binaries of the application", "filetitle": "OpenInsightExplorer", "main_file": false, "use_in_gallery": false, "access": "public", "name": "stehno-2011-RVD-OpenInsightExplorer.zip", "type": "application/zip", "size": 15402697, "path": "Publication:stehno-2011-RVD", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/stehno-2011-RVD/stehno-2011-RVD-OpenInsightExplorer.zip", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/stehno-2011-RVD/stehno-2011-RVD-OpenInsightExplorer:thumb{{size}}.png" }, { "description": "", "filetitle": "Poster", "main_file": false, "use_in_gallery": false, "access": "public", "name": "stehno-2011-RVD-Poster.pdf", "type": "application/pdf", "size": 1840521, "path": "Publication:stehno-2011-RVD", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/stehno-2011-RVD/stehno-2011-RVD-Poster.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/stehno-2011-RVD/stehno-2011-RVD-Poster:thumb{{size}}.png" }, { "description": "", "filetitle": "Presentation", "main_file": false, "use_in_gallery": false, "access": "public", "name": "stehno-2011-RVD-Presentation.pdf", "type": "application/pdf", "size": 1390575, "path": "Publication:stehno-2011-RVD", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/stehno-2011-RVD/stehno-2011-RVD-Presentation.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/stehno-2011-RVD/stehno-2011-RVD-Presentation:thumb{{size}}.png" }, { "description": "", "filetitle": "Thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "stehno-2011-RVD-Thesis.pdf", "type": "application/pdf", "size": 3136609, "path": "Publication:stehno-2011-RVD", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/stehno-2011-RVD/stehno-2011-RVD-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/stehno-2011-RVD/stehno-2011-RVD-Thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/stehno-2011-RVD/", "__class": "Publication" }, { "id": "prieler_11_patchmatch", "type_id": "studentproject", "tu_id": null, "repositum_id": null, "title": "Patchmatch for Texture Synthesis", "date": "2011", "abstract": "The goal of this course was to implement a texture synthesis algorithm and analyze its performance and visual quality. Two papers form the theoretical foundation of this project: “Texture Optimization for Example-based Synthesis” by Kwatra et al [KEBK05] and “Patchmatch: A randomized Correspondence Algorithm for\r\nStructural Image Editing” by Barnes et al [BSFG09].", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 944 ], "matrikelnr": "0726319", "supervisor": [ 356 ], "research_areas": [], "keywords": [ "Texture synthesis" ], "weblinks": [], "files": [ { "description": "written report about the project", "filetitle": "report", "main_file": false, "use_in_gallery": false, "access": "public", "name": "prieler_11_patchmatch-report.pdf", "type": "application/pdf", "size": 8338935, "path": "Publication:prieler_11_patchmatch", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/prieler_11_patchmatch/prieler_11_patchmatch-report.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/prieler_11_patchmatch/prieler_11_patchmatch-report:thumb{{size}}.png" } ], "projects_workgroups": [ "Desiree" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/prieler_11_patchmatch/", "__class": "Publication" }, { "id": "StickmanMax-shoetta-kampfer", "type_id": "studentproject", "tu_id": null, "repositum_id": null, "title": "StickmanMax", "date": "2011", "abstract": "Stickman M-A-X is an iPhone application. iPhone gaming applications are very common and enjoy a great popularity factor. Flexibility and ease of use are decisive factors impacting the success of these kind of applications on the iPhone.\r\n\r\nBut we noticed, during our basic concept and evaluation phase that most applications are limited to a given game content. The experience factor and content in general cannot be extended.\r\nThis is our moment, this is our motivation, this is where the Stickman M-A-X application becomes different and provides the user with the proper means. \r\n\r\nThe user should be given the opportunity to play a predefined and well balanced game level, but should also be able to create its own content, its own challanges with easy and accessible means.\r\n\r\nStickman M-A-X is intended as a simple but more of a more motivating game concept which encourage to play and create.\r\n\r\n\r\nhttp://www.cg.tuwien.ac.at/courses/projekte_old/vis/finished/MSchoettaAKampfer/StickmanMax/Concept.html", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 373, "image_height": 248, "name": "StickmanMax-shoetta-kampfer-.jpg", "type": "image/jpeg", "size": 42433, "path": "Publication:StickmanMax-shoetta-kampfer", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/StickmanMax-shoetta-kampfer/StickmanMax-shoetta-kampfer-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/StickmanMax-shoetta-kampfer/StickmanMax-shoetta-kampfer-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 929, 930 ], "supervisor": [ 488 ], "research_areas": [], "keywords": [ "iOS", "Game Development", "OpenGL ES" ], "weblinks": [], "files": [ { "description": "", "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 373, "image_height": 248, "name": "StickmanMax-shoetta-kampfer-.jpg", "type": "image/jpeg", "size": 42433, "path": "Publication:StickmanMax-shoetta-kampfer", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/StickmanMax-shoetta-kampfer/StickmanMax-shoetta-kampfer-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/StickmanMax-shoetta-kampfer/StickmanMax-shoetta-kampfer-:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/StickmanMax-shoetta-kampfer/", "__class": "Publication" }, { "id": "Csuk_2011", "type_id": "studentproject", "tu_id": null, "repositum_id": null, "title": "CUDA-based Reconstruction and Visualization of Non-uniform Point Sets", "date": "2011", "abstract": "In this work we present a CUDA-based parallelized implementation of the reconstruction technique for 2D and 3D non-uniform point sets using a variational approach. Cubic B-splines are used as an approximation for the computationally expensive radial basis functions. As B-splines only have local support, a regularization term is added to handle larger gaps between sample points.\r\nThe main reconstruction task is the solving of a large but sparse linear system. The system's size makes the use of iterative algorithms necessary. Different solvers are implemented in order to find the best-performing approach. GPU-based algorithms require a different kind of strategy than traditional implementations. The possible degree of parallelization becomes the defining factor for the efficient realization of algorithms.\r\nThe use of B-splines also makes a multi-resolution approach possible. The system can be solved at a coarser representation and its solution acts as an initialization for the finer resolution. This further speeds up the reconstruction.\r\nA downside of using graphics cards for computation is the relative sparsity of available memory. Most GPUs are not capable of handling big datasets directly. Therefore, the non-uniform representation is split into a number of smaller blocks. Each block is then reconstructed separately and the intermediate results are joined together resulting in the final solution.\r\nThe reconstruction results in terms of speed and quality are shown and are pitted against other CPU-based implementations.\r\nA CUDA based interactive ray-tracer is used to visualize the 3 dimensional datasets and test the visual quality of the reconstruction.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 802, "image_height": 802, "name": "Csuk_2011-image.png", "type": "image/png", "size": 204564, "path": "Publication:Csuk_2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Csuk_2011/Csuk_2011-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Csuk_2011/Csuk_2011-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 926 ], "matrikelnr": "625909", "supervisor": [ 636 ], "research_areas": [], "keywords": [ "CUDA", "GPU", "Variational Reconstruction" ], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 802, "image_height": 802, "name": "Csuk_2011-image.png", "type": "image/png", "size": 204564, "path": "Publication:Csuk_2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Csuk_2011/Csuk_2011-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Csuk_2011/Csuk_2011-image:thumb{{size}}.png" }, { "description": "", "filetitle": "thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Csuk_2011-thesis.pdf", "type": "application/pdf", "size": 4721941, "path": "Publication:Csuk_2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Csuk_2011/Csuk_2011-thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Csuk_2011/Csuk_2011-thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Csuk_2011/", "__class": "Publication" }, { "id": "jeschke-2011-talkPrague", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "Estimating Color and Texture Parameters for Vector Graphics", "date": "2011", "abstract": "Diffusion curves are a powerful vector graphic representation that stores an image as a set of 2D Bezier curves with colors defined on either side. These colors are diffused over the image plane, resulting in smooth color regions as well as sharp boundaries. In this paper, we introduce a new automatic diffusion curve coloring algorithm. We\r\nstart by defining a geometric heuristic for the maximum density of color control points along the image curves.\r\nFollowing this, we present a new algorithm to set the colors of these points so that the resulting diffused image is as close as possible to a source image in a least squares sense. We compare our coloring solution to the existing one which fails for textured regions, small features, and inaccurately placed curves. The second contribution of the paper is to extend the diffusion curve representation to include texture details based on Gabor noise. Like the curves themselves, the defined texture is resolution independent, and represented compactly. We define methods to automatically make an initial guess for the noise texure, and we provide intuitive manual controls to edit the parameters of the Gabor noise. Finally, we show that the diffusion curve representation itself extends to storing any number of attributes in an image, and we demonstrate this functionality with image stippling an hatching applications.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1609, "image_height": 651, "name": "jeschke-2011-talkPrague-.jpg", "type": "image/jpeg", "size": 410716, "path": "Publication:jeschke-2011-talkPrague", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-talkPrague/jeschke-2011-talkPrague-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-talkPrague/jeschke-2011-talkPrague-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 356 ], "date_from": "2011-06-30", "date_to": "2011-06-30", "event": "Academy of Sciences of the Czech Republic in Prague", "location": "Prague (Czech Republic)", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1609, "image_height": 651, "name": "jeschke-2011-talkPrague-.jpg", "type": "image/jpeg", "size": 410716, "path": "Publication:jeschke-2011-talkPrague", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-talkPrague/jeschke-2011-talkPrague-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-talkPrague/jeschke-2011-talkPrague-:thumb{{size}}.png" } ], "projects_workgroups": [ "Desiree" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-talkPrague/", "__class": "Publication" }, { "id": "jeschke-2011-xMasCard", "type_id": "xmascard", "tu_id": null, "repositum_id": null, "title": "X-Mas Card 2011", "date": "2011", "abstract": "Happy 2012!", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 1807, "image_height": 1310, "name": "jeschke-2011-xMasCard-image.png", "type": "image/png", "size": 1269411, "path": "Publication:jeschke-2011-xMasCard", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-xMasCard/jeschke-2011-xMasCard-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-xMasCard/jeschke-2011-xMasCard-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 356 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 1807, "image_height": 1310, "name": "jeschke-2011-xMasCard-image.png", "type": "image/png", "size": 1269411, "path": "Publication:jeschke-2011-xMasCard", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-xMasCard/jeschke-2011-xMasCard-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-xMasCard/jeschke-2011-xMasCard-image:thumb{{size}}.png" }, { "description": "", "filetitle": "XMas Card 2011", "main_file": false, "use_in_gallery": false, "access": "public", "name": "jeschke-2011-xMasCard-XMas Card 2011.pdf", "type": "application/pdf", "size": 19294741, "path": "Publication:jeschke-2011-xMasCard", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-xMasCard/jeschke-2011-xMasCard-XMas Card 2011.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-xMasCard/jeschke-2011-xMasCard-XMas Card 2011:thumb{{size}}.png" } ], "projects_workgroups": [ "xmas" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-xMasCard/", "__class": "Publication" }, { "id": "keglevic_schulz-2011-MB", "type_id": "studentproject", "tu_id": null, "repositum_id": null, "title": "NoNoise: Music Library Visualization Plugin", "date": "2011", "abstract": "In order to navigate through music libraries the common practice is to browse through lists of meta data. However, for libraries with thousands of songs a visual view of the library is more practical for browsing. There are standalone applications for music library visualization which use content-based features of the songs. These applications usually lack usability and features compared to sophisticated music players. We combine the positive aspects of both areas by providing a library visualization\r\nplug-in for an existing successful music player (i.e. Banshee Media Player). Our plug-in enables the user to browse a two-dimensional point representation using different levels of abstraction to accomplish the goal of creating a playlist containing songs he or she wants to listen to.\r\n\r\nGitHub link:\r\nhttp://github.com/h0rm/No.Noise\r\n\r\nProject blog:\r\nhttp://bansheenonoise.blogspot.com/", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "Screenshot", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1307, "image_height": 867, "name": "keglevic_schulz-2011-MB-Screenshot.jpg", "type": "image/jpeg", "size": 74283, "path": "Publication:keglevic_schulz-2011-MB", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/keglevic_schulz-2011-MB/keglevic_schulz-2011-MB-Screenshot.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/keglevic_schulz-2011-MB/keglevic_schulz-2011-MB-Screenshot:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 918, 919 ], "matrikelnr": "0625732, 0626714", "supervisor": [ 597 ], "research_areas": [], "keywords": [ "Banshee", "Music visualization" ], "weblinks": [], "files": [ { "description": "Binaries and source code", "filetitle": "NoNoise 1.0", "main_file": false, "use_in_gallery": false, "access": "public", "name": "keglevic_schulz-2011-MB-NoNoise 1.0.zip", "type": "application/zip", "size": 1191720, "path": "Publication:keglevic_schulz-2011-MB", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/keglevic_schulz-2011-MB/keglevic_schulz-2011-MB-NoNoise 1.0.zip", "thumb_image_sizes": [] }, { "description": "Final presentation", "filetitle": "Presentation", "main_file": false, "use_in_gallery": false, "access": "public", "name": "keglevic_schulz-2011-MB-Presentation.pdf", "type": "application/pdf", "size": 6964358, "path": "Publication:keglevic_schulz-2011-MB", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/keglevic_schulz-2011-MB/keglevic_schulz-2011-MB-Presentation.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/keglevic_schulz-2011-MB/keglevic_schulz-2011-MB-Presentation:thumb{{size}}.png" }, { "description": "Final report", "filetitle": "Report", "main_file": true, "use_in_gallery": false, "access": "public", "name": "keglevic_schulz-2011-MB-Report.pdf", "type": "application/pdf", "size": 470471, "path": "Publication:keglevic_schulz-2011-MB", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/keglevic_schulz-2011-MB/keglevic_schulz-2011-MB-Report.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/keglevic_schulz-2011-MB/keglevic_schulz-2011-MB-Report:thumb{{size}}.png" }, { "description": "", "filetitle": "Screenshot", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1307, "image_height": 867, "name": "keglevic_schulz-2011-MB-Screenshot.jpg", "type": "image/jpeg", "size": 74283, "path": "Publication:keglevic_schulz-2011-MB", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/keglevic_schulz-2011-MB/keglevic_schulz-2011-MB-Screenshot.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/keglevic_schulz-2011-MB/keglevic_schulz-2011-MB-Screenshot:thumb{{size}}.png" }, { "description": "Initial specifications document", "filetitle": "Specifications", "main_file": false, "use_in_gallery": false, "access": "public", "name": "keglevic_schulz-2011-MB-Specifications.pdf", "type": "application/pdf", "size": 65721, "path": "Publication:keglevic_schulz-2011-MB", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/keglevic_schulz-2011-MB/keglevic_schulz-2011-MB-Specifications.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/keglevic_schulz-2011-MB/keglevic_schulz-2011-MB-Specifications:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/keglevic_schulz-2011-MB/", "__class": "Publication" }, { "id": "Ishmukhametov_Denis_2011_EIN", "type_id": "studentproject", "tu_id": null, "repositum_id": null, "title": "Efficient Irradiance Normal Mapping", "date": "2011", "abstract": "Cinematic image quality has always been one of the most important challenges of computer graphics. One of the key components, that realistic CG is comprised of, is illumination. In real-time graphics resources are limited, hence we cannot a\u001bord dynamic realistic\r\nphyscially accurate lighting. However, we can precalculate high-quality static lighting - light mapping method. But we cannot use normal mapping with light mapping directly, because in light mapping, lighting is precalculated for one default normal direction whereas in normal mapping normals are de\u001cned in a hemispherical domain. Irradiance normal mapping methods overcomes such problems by using spherical or hemispherical basis functions to encode the irradiance signal.\r\nOur task is to compare the existing approaches to irradiance normal mapping visually and analytically by implementing the irradiance normal mapping pipeline with the demo application that demonstrates di\u001berent lighting methods and allows to switch between them in run-time.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Image", "filetitle": "Image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 1360, "image_height": 768, "name": "Ishmukhametov_Denis_2011_EIN-Image.jpg", "type": "image/jpeg", "size": 615098, "path": "Publication:Ishmukhametov_Denis_2011_EIN", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Ishmukhametov_Denis_2011_EIN/Ishmukhametov_Denis_2011_EIN-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Ishmukhametov_Denis_2011_EIN/Ishmukhametov_Denis_2011_EIN-Image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 927 ], "supervisor": [ 618 ], "research_areas": [], "keywords": [ "Real-time Rendering", "Global Illumination", "Irradiance Normal Mapping", "Radiosity" ], "weblinks": [], "files": [ { "description": "Image", "filetitle": "Image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 1360, "image_height": 768, "name": "Ishmukhametov_Denis_2011_EIN-Image.jpg", "type": "image/jpeg", "size": 615098, "path": "Publication:Ishmukhametov_Denis_2011_EIN", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Ishmukhametov_Denis_2011_EIN/Ishmukhametov_Denis_2011_EIN-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Ishmukhametov_Denis_2011_EIN/Ishmukhametov_Denis_2011_EIN-Image:thumb{{size}}.png" }, { "description": "Source Code and binary", "filetitle": "Implementation", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Ishmukhametov_Denis_2011_EIN-Implementation.zip", "type": "application/zip", "size": 169462860, "path": "Publication:Ishmukhametov_Denis_2011_EIN", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Ishmukhametov_Denis_2011_EIN/Ishmukhametov_Denis_2011_EIN-Implementation.zip", "thumb_image_sizes": [] }, { "description": "Efficient Irradiance Normal Mapping", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Ishmukhametov_Denis_2011_EIN-Paper.pdf", "type": "application/pdf", "size": 22893197, "path": "Publication:Ishmukhametov_Denis_2011_EIN", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Ishmukhametov_Denis_2011_EIN/Ishmukhametov_Denis_2011_EIN-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Ishmukhametov_Denis_2011_EIN/Ishmukhametov_Denis_2011_EIN-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "Treelumination" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Ishmukhametov_Denis_2011_EIN/", "__class": "Publication" }, { "id": "labschuetz-2011-rsr", "type_id": "bachelorthesis", "tu_id": null, "repositum_id": null, "title": "Realistic real-time sound rendering in virtual environments", "date": "2011", "abstract": "Spatial audio rendering plays an important role in simulating realistic\r\nvirtual environments. This report gives an overview. It contains an introduction to the physical background of sound and the psychophysical background of sound. Spatial audio in current applications such as video games is reviewed and an overview of acoustical simulations and applications with special interest in real-time application is given. Numerical and geometric methods are presented and compared.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1326, "image_height": 1008, "name": "labschuetz-2011-rsr-image.jpg", "type": "image/jpeg", "size": 142397, "path": "Publication:labschuetz-2011-rsr", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/labschuetz-2011-rsr/labschuetz-2011-rsr-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/labschuetz-2011-rsr/labschuetz-2011-rsr-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 840 ], "supervisor": [ 660 ], "research_areas": [], "keywords": [ "real-time audio rendering", "psychoacoustics", "virtual environments", "sound in computer games", "physics of soundpropagation" ], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1326, "image_height": 1008, "name": "labschuetz-2011-rsr-image.jpg", "type": "image/jpeg", "size": 142397, "path": "Publication:labschuetz-2011-rsr", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/labschuetz-2011-rsr/labschuetz-2011-rsr-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/labschuetz-2011-rsr/labschuetz-2011-rsr-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "labschuetz-2011-rsr-paper.pdf", "type": "application/pdf", "size": 3792807, "path": "Publication:labschuetz-2011-rsr", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/labschuetz-2011-rsr/labschuetz-2011-rsr-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/labschuetz-2011-rsr/labschuetz-2011-rsr-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "CROSSMOD" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/labschuetz-2011-rsr/", "__class": "Publication" }, { "id": "Mantler-2011-GEAR", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "GEARViewer: A State of the Art Real-Time Geospatial Visualization Framework", "date": "2011", "abstract": "Geospatial visualization is playing an increasingly important part in the planning and public discussion of\r\ninfrastructure projects. In addition to pre-rendered highly realistic imagery, interactive viewers have become\r\nan important tool for this task. Advances in rendering technology and performance have reduced the gap in\r\nvisual quality between pre-rendered imagery and real-time applications, and the additional possibilities of a\r\nlive visualization may become important tools in the decision making process.\r\nHistorically, the step from GIS data or a highly detailed architectural model to a representation that is\r\nsuitable for real-time display has been complex and required a very finely tuned workflow. On the other side,\r\nthe general public is relatively spoiled by the extremely high quality of computer games and CGI films.\r\nNaturally, a tremendous amount of work and time is typically spent to fully optimize computer games for the\r\navailable hardware. This is usually not possible for geospatial visualization tasks, but nonetheless current\r\ninteractive viewing applications must strive to achieve similar quality and performance to be successful.\r\nIn this paper, we present GEARViewer, a state of the art geospatial rendering framework developed at\r\nVRVis. Developed in close cooperation with major stakeholders in the Austrian road and railway\r\ninfrastructure, it bridges the gap between GIS applications and real-time rendering, and achieves a high\r\ndegree of realism and performance while supporting many of the tasks involved in geospatial visualizations.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 407, 205, 941, 190 ], "booktitle": "Proceedings of CORP 2011", "date_from": "2011-05-18", "date_to": "2011-05-20", "editor": "Manfred SCHRENK, Vasily V. POPOVICH, Peter ZEILE", "isbn": "978-3-9503110-1-3", "lecturer": [ 407 ], "pages_from": "345", "pages_to": "354", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "Full paper in pdf", "main_file": false, "use_in_gallery": false, "access": "public", "name": "Mantler-2011-GEAR-Full paper in pdf.pdf", "type": "application/pdf", "size": 857372, "path": "Publication:Mantler-2011-GEAR", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Mantler-2011-GEAR/Mantler-2011-GEAR-Full paper in pdf.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Mantler-2011-GEAR/Mantler-2011-GEAR-Full paper in pdf:thumb{{size}}.png" } ], "projects_workgroups": [ "VRVis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Mantler-2011-GEAR/", "__class": "Publication" }, { "id": "hochmayr_manuel-2011-VoRMD", "type_id": "studentproject", "tu_id": null, "repositum_id": null, "title": "Volume Rendering on Mobile Devices", "date": "2011", "abstract": "Nowadays volume rendering is a very important topic. There are many programs for PC that render volumes very fast and display all kind of information the user is interested in. However portable devices have also become very popular these days, but there are almost no real-time volume render programs for them. Due to hardware improvements in the mobile sector, e-mail, browsing and games have gone portable- so now real time volume rendering.\r\n\r\nVoRMD is a project about volume rendering on a mobile device. It was planed to do a comparison between OpenGL ES 2.0 and WebGL and their performances on doing a volume rendering on a mobile device. Because of the lack of support of WebGL on mobile web browsers, the WebGL part was dropped. The new goal was implementing a volume-rendering framework in OpenGL ES 2.0 with GLSL for an Andorid 2.3 device. The program supports Android 2.3 devices having a GPU chip with 3D texture extension. It is possible to load volumes in “.dat” format and transfer function images in “.png “format. It uses 4 different kinds of shader, MIP, averaging, composition and XYZ slicing, for calculating and displaying a volume file. All that is done in real time on the device. The user can use touch input to rotate and scale the volume. Furthermore the program adapts the sampling rate according to the frame rate, to allow better interaction when transforming the volume.\r\n", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "Icon", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 566, "image_height": 457, "name": "hochmayr_manuel-2011-VoRMD-Icon.jpg", "type": "image/jpeg", "size": 37094, "path": "Publication:hochmayr_manuel-2011-VoRMD", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/hochmayr_manuel-2011-VoRMD/hochmayr_manuel-2011-VoRMD-Icon.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/hochmayr_manuel-2011-VoRMD/hochmayr_manuel-2011-VoRMD-Icon:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 815 ], "supervisor": [ 597 ], "research_areas": [], "keywords": [ "OpenGL ES", "Android", "Volume rendering", "Mobile devices" ], "weblinks": [], "files": [ { "description": "Android Application", "filetitle": "Application", "main_file": false, "use_in_gallery": false, "access": "public", "name": "hochmayr_manuel-2011-VoRMD-Application.apk", "type": "application/zip", "size": 689487, "path": "Publication:hochmayr_manuel-2011-VoRMD", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/hochmayr_manuel-2011-VoRMD/hochmayr_manuel-2011-VoRMD-Application.apk", "thumb_image_sizes": [] }, { "description": "", "filetitle": "Icon", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 566, "image_height": 457, "name": "hochmayr_manuel-2011-VoRMD-Icon.jpg", "type": "image/jpeg", "size": 37094, "path": "Publication:hochmayr_manuel-2011-VoRMD", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/hochmayr_manuel-2011-VoRMD/hochmayr_manuel-2011-VoRMD-Icon.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/hochmayr_manuel-2011-VoRMD/hochmayr_manuel-2011-VoRMD-Icon:thumb{{size}}.png" }, { "description": "", "filetitle": "Presentation", "main_file": false, "use_in_gallery": false, "access": "public", "name": "hochmayr_manuel-2011-VoRMD-Presentation.pdf", "type": "application/pdf", "size": 8560660, "path": "Publication:hochmayr_manuel-2011-VoRMD", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/hochmayr_manuel-2011-VoRMD/hochmayr_manuel-2011-VoRMD-Presentation.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/hochmayr_manuel-2011-VoRMD/hochmayr_manuel-2011-VoRMD-Presentation:thumb{{size}}.png" }, { "description": "", "filetitle": "Report", "main_file": true, "use_in_gallery": false, "access": "public", "name": "hochmayr_manuel-2011-VoRMD-Report.pdf", "type": "application/pdf", "size": 972434, "path": "Publication:hochmayr_manuel-2011-VoRMD", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/hochmayr_manuel-2011-VoRMD/hochmayr_manuel-2011-VoRMD-Report.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/hochmayr_manuel-2011-VoRMD/hochmayr_manuel-2011-VoRMD-Report:thumb{{size}}.png" }, { "description": "Source code for Eclipse", "filetitle": "Source", "main_file": false, "use_in_gallery": false, "access": "public", "name": "hochmayr_manuel-2011-VoRMD-Source.zip", "type": "application/zip", "size": 10109164, "path": "Publication:hochmayr_manuel-2011-VoRMD", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/hochmayr_manuel-2011-VoRMD/hochmayr_manuel-2011-VoRMD-Source.zip", "thumb_image_sizes": [] } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/hochmayr_manuel-2011-VoRMD/", "__class": "Publication" }, { "id": "Hebart-2011-ColorAdjustment", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Color Adjustment of Colored Range Images", "date": "2011", "abstract": "This thesis shows an approach to remove discontinuities in the color appearance from range images. To produce a point cloud of an object it is necessary to scan it with an 3D Scanner from several positions that the whole object is covered in the point cloud. After the scanning the different scans have to be merged which causes the problems in the color appearance. These discontinuities come e.g. from different light situations and the distance between scanned point and scanner.\r\n\r\nThis thesis shows an possible solution for this problem. The solution covers an image processing part, here are just the pictures which are made during the scanning process revised. The second part is about the processing of the already colored point cloud and re-color points according to different factors like the distance from the scanner, occlusion and so on.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Trilateral Filtering", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 800, "image_height": 477, "name": "Hebart-2011-ColorAdjustment-image.jpg", "type": "image/jpeg", "size": 123422, "path": "Publication:Hebart-2011-ColorAdjustment", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Hebart-2011-ColorAdjustment/Hebart-2011-ColorAdjustment-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Hebart-2011-ColorAdjustment/Hebart-2011-ColorAdjustment-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 760 ], "date_start": "2008-03-10", "matrikelnr": "0626511", "supervisor": [ 614, 193 ], "research_areas": [], "keywords": [ "Image filtering", "Point-based rendering", "Color correction" ], "weblinks": [], "files": [ { "description": "Trilateral Filtering", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 800, "image_height": 477, "name": "Hebart-2011-ColorAdjustment-image.jpg", "type": "image/jpeg", "size": 123422, "path": "Publication:Hebart-2011-ColorAdjustment", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Hebart-2011-ColorAdjustment/Hebart-2011-ColorAdjustment-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Hebart-2011-ColorAdjustment/Hebart-2011-ColorAdjustment-image:thumb{{size}}.png" }, { "description": "", "filetitle": "poster", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Hebart-2011-ColorAdjustment-poster.pdf", "type": "application/pdf", "size": 18951308, "path": "Publication:Hebart-2011-ColorAdjustment", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Hebart-2011-ColorAdjustment/Hebart-2011-ColorAdjustment-poster.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Hebart-2011-ColorAdjustment/Hebart-2011-ColorAdjustment-poster:thumb{{size}}.png" }, { "description": "", "filetitle": "thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Hebart-2011-ColorAdjustment-thesis.pdf", "type": "application/pdf", "size": 11431691, "path": "Publication:Hebart-2011-ColorAdjustment", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Hebart-2011-ColorAdjustment/Hebart-2011-ColorAdjustment-thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Hebart-2011-ColorAdjustment/Hebart-2011-ColorAdjustment-thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "TERAPOINTS" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Hebart-2011-ColorAdjustment/", "__class": "Publication" }, { "id": "hanzl-2011", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Spontaneous Social Networks", "date": "2011", "abstract": "Social networks are a well researched field. There is extensive literature covering this topic.\r\nThey are nowadays used for a wide variety of applications such as business, education, medicine\r\nand dating. These applications contribute to the high popularity of social networks. The underlying\r\nconcept of all social networking applications is a graph, that consists of nodes representing people\r\nand edges representing social relations. This social graph is commonly very rigid in semantics and\r\ntedious to manipulate. Two users can add an edge only by mutually accepting the relation. Typically\r\nthis graph manipulation needs manual intervention.\r\nIn contrast, Spontaneous Social Networks (SSNs) rely on much more flexible graphs that are manipulated\r\nwith minimal manual intervention. Edges are automatically generated and deleted in real time\r\nby hardware devices such as smartphones and desktop PCs. Applications operate on top of SSNs.\r\nThe application defines the purpose and properties of the SSN and provides the users an interface to\r\na SSN.\r\nThe goal of this diploma thesis is the design of a standard and an implementation of a Spontaneous\r\nSocial Networking (SSN) framework. The capabilities of the framework are demonstrated by a\r\nnumber of example applications. The Extensible Messaging and Presence Protocol (XMPP) and\r\nthe Publish-Subscribe (PubSub) paradigm are used for communication in SSNs. The properties and\r\ndiscovery approaches of SSNs are defined. The implementation is evaluated in terms of usability\r\nwith the help of the System Usability Scale (SUS). Furthermore, the suitability of XMPP and the\r\nscalability and privacy of SSNs and the reference implementation are discussed.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 489, "image_height": 530, "name": "hanzl-2011-image.PNG", "type": "image/png", "size": 61129, "path": "Publication:hanzl-2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/hanzl-2011/hanzl-2011-image.PNG", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/hanzl-2011/hanzl-2011-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 837 ], "supervisor": [ 166, 488 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 489, "image_height": 530, "name": "hanzl-2011-image.PNG", "type": "image/png", "size": 61129, "path": "Publication:hanzl-2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/hanzl-2011/hanzl-2011-image.PNG", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/hanzl-2011/hanzl-2011-image:thumb{{size}}.png" }, { "description": "", "filetitle": "presentation", "main_file": false, "use_in_gallery": false, "access": "public", "name": "hanzl-2011-presentation.pptx", "type": "application/zip", "size": 1792616, "path": "Publication:hanzl-2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/hanzl-2011/hanzl-2011-presentation.pptx", "thumb_image_sizes": [] }, { "description": "", "filetitle": "Thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "hanzl-2011-Thesis.pdf", "type": "application/pdf", "size": 6484994, "path": "Publication:hanzl-2011", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/hanzl-2011/hanzl-2011-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/hanzl-2011/hanzl-2011-Thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/hanzl-2011/", "__class": "Publication" }, { "id": "Groeller-2011-HSH", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "The Haunted Swamps of Heuristics", "date": "2011", "abstract": "", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "name": "Groeller-2011-HSH-.pptx", "type": "application/zip", "size": 14486911, "path": "Publication:Groeller-2011-HSH", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller-2011-HSH/Groeller-2011-HSH-.pptx", "thumb_image_sizes": [] }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 166 ], "date_from": "2011-05-31", "date_to": "2011-06-03", "event": "EuroVis 2011", "location": "Bergen, Norway", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "name": "Groeller-2011-HSH-.pptx", "type": "application/zip", "size": 14486911, "path": "Publication:Groeller-2011-HSH", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller-2011-HSH/Groeller-2011-HSH-.pptx", "thumb_image_sizes": [] } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Groeller-2011-HSH/", "__class": "Publication" }, { "id": "haidacher-2011-phd", "type_id": "phdthesis", "tu_id": null, "repositum_id": null, "title": "Information-based Feature Enhancement in Scientific Visualization", "date": "2011", "abstract": "Scientific visualization is a research area which gives insight into volumetric data acquired through measurement or simulation. The visualization allows a faster and more intuitive exploration of the data.\r\n\r\nDue to the rapid development in hardware for the measurement and simulation of scientific data, the size and complexity of data is constantly increasing. This has the benefit that it is possible to get a more accurate insight into the measured or simulated phenomena. A drawback of the increasing data size and complexity is the problem of generating an expressive representation of the data.\r\n\r\nSince only certain parts of the data are necessary to make a decision, it is possible to mask parts of the data along the visualization pipeline to enhance only those parts which are important in the visualization. For the masking various properties are extracted from the data which are used to classify a part as important or not. In general a transfer function is used for this classification process which has to be designed by the user.\r\n\r\nIn this thesis three novel approaches are presented which use methods from information theory and statistics to enhance features from the data in the classification process that are important for a certain task. With the tools of information theory and statistics it is possible to extract properties from the data which are able to classify different materials or tissues in the data better than comparable other approaches.\r\n\r\nOne approach adaptively extracts statistical properties, i.e. the mean value and the standard deviation, of the data values in the local neighborhood of each point in the data set. With these statistical properties it is possible to better distinguish between different materials in a data set even though the data is very noisy.\r\n\r\nThe other two approaches in this thesis employ methods from information theory to extract features from multimodal data sets. Thus it is possible to enhance features of the data which are either very similar or very dissimilar in both modalities. Through information theory the variations in the value ranges of both modalities do not influence the classification of these features.\r\n\r\nAll three approaches define novel transfer-function spaces which simplify the design process of a transfer function for the user. Different features of the data, such as different materials, can be clearly depicted in these spaces. Therefore, it is easier for a user to design a transfer function which enhances the features of importance for a certain task.\r\n\r\nFor each of the new approaches results and comparisons to other existing techniques are shown to highlight the usefulness of the proposed methods. Through the described research it is shown that information theory and statistics are tools which are able to extract expressive properties from the data.\r\n\r\nIn the introduction a broad overview over scientific visualization and the visualization pipeline is given. The classification process is described in more detail. Since information theory and statistics play an important role for all three approaches, a brief introduction to these concepts is given as well.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "Image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 2486, "image_height": 2530, "name": "haidacher-2011-phd-Image.png", "type": "image/png", "size": 3039441, "path": "Publication:haidacher-2011-phd", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-phd/haidacher-2011-phd-Image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-phd/haidacher-2011-phd-Image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 597 ], "date_end": "2011-06", "date_start": "2007-10", "reviewer_1": [ 166 ], "reviewer_2": [ 951 ], "rigorosum": "2011-06-17", "supervisor": [ 166 ], "research_areas": [], "keywords": [ "Scientific visualization", "Information theory", "Volume classification" ], "weblinks": [], "files": [ { "description": "", "filetitle": "Image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 2486, "image_height": 2530, "name": "haidacher-2011-phd-Image.png", "type": "image/png", "size": 3039441, "path": "Publication:haidacher-2011-phd", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-phd/haidacher-2011-phd-Image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-phd/haidacher-2011-phd-Image:thumb{{size}}.png" }, { "description": "", "filetitle": "PhD Thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "haidacher-2011-phd-PhD Thesis.pdf", "type": "application/pdf", "size": 16173886, "path": "Publication:haidacher-2011-phd", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-phd/haidacher-2011-phd-PhD Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-phd/haidacher-2011-phd-PhD Thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/haidacher-2011-phd/", "__class": "Publication" }, { "id": "praeauer-2011-et", "type_id": "studentproject", "tu_id": null, "repositum_id": null, "title": "Preparing an Eyetracking Experiment with a Computer Game", "date": "2011", "abstract": "The goal was to establish a methodology to record, playback and analyze gaze-data in 2D action games. Therefore a computer game was extended with functionality to record game states and control an eye-tracker. Further analysis software was implemented to map fixations back to game objects to derive fixation counts per object.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 799, "image_height": 631, "name": "praeauer-2011-et-image.png", "type": "image/png", "size": 605181, "path": "Publication:praeauer-2011-et", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/praeauer-2011-et/praeauer-2011-et-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/praeauer-2011-et/praeauer-2011-et-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 914, 915 ], "date_end": "2011-09-30", "date_start": "2011-03-10", "matrikelnr": "0728095, 0728098", "supervisor": [ 660 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 799, "image_height": 631, "name": "praeauer-2011-et-image.png", "type": "image/png", "size": 605181, "path": "Publication:praeauer-2011-et", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/praeauer-2011-et/praeauer-2011-et-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/praeauer-2011-et/praeauer-2011-et-image:thumb{{size}}.png" }, { "description": "Dokumentation", "filetitle": "report", "main_file": false, "use_in_gallery": false, "access": "public", "name": "praeauer-2011-et-report.pdf", "type": "application/pdf", "size": 1739446, "path": "Publication:praeauer-2011-et", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/praeauer-2011-et/praeauer-2011-et-report.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/praeauer-2011-et/praeauer-2011-et-report:thumb{{size}}.png" } ], "projects_workgroups": [ "GPV" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/praeauer-2011-et/", "__class": "Publication" }, { "id": "Pramerdorfer-2011-PAV", "type_id": "studentproject", "tu_id": null, "repositum_id": null, "title": "Processing Audio Visualization", "date": "2011", "abstract": "Processing Audio Visualization (PAV) is a music visualization project based on Processing and Java. \r\nThe project consists of three parts:\r\nThe 'libpav' library for music visualization, the 'pav' application for visualizing music that is streamed over the network using the 'libpav' library, and the 'pav-player' a simple audio player with tag support, that streams audio data to pav over the network.\r\nPAV is released under the GPL v3 license and can be downloaded from github. \r\n\r\nThe full documentation is available at: http://www.cg.tuwien.ac.at/courses/projekte_old/vis/finished/CPramerdorfer/", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 710, "image_height": 550, "name": "Pramerdorfer-2011-PAV-.png", "type": "image/png", "size": 226238, "path": "Publication:Pramerdorfer-2011-PAV", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Pramerdorfer-2011-PAV/Pramerdorfer-2011-PAV-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Pramerdorfer-2011-PAV/Pramerdorfer-2011-PAV-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 908 ], "matrikelnr": "0626747", "supervisor": [ 488 ], "research_areas": [], "keywords": [ "Audio Visualization", "Music Visualization", "Processing" ], "weblinks": [], "files": [ { "description": "", "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 710, "image_height": 550, "name": "Pramerdorfer-2011-PAV-.png", "type": "image/png", "size": 226238, "path": "Publication:Pramerdorfer-2011-PAV", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Pramerdorfer-2011-PAV/Pramerdorfer-2011-PAV-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Pramerdorfer-2011-PAV/Pramerdorfer-2011-PAV-:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Pramerdorfer-2011-PAV/", "__class": "Publication" }, { "id": "jeschke-2011-esttalk", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "Estimating Color and Texture Parameters for Vector Graphics", "date": "2011", "abstract": "Diffusion curves are a powerful vector graphic representation that stores an image as a set of 2D Bezier curves with colors defined on either side. These colors are diffused over the image plane, resulting in smooth color regions as well as sharp boundaries. In this paper, we introduce a new automatic diffusion curve coloring algorithm. We start by defining a geometric heuristic for the maximum density of color control points along the image curves. Following this, we present a new algorithm to set the colors of these points so that the resulting diffused image is as close as possible to a source image in a least squares sense. We compare our coloring solution to the existing one which fails for textured regions, small features, and inaccurately placed curves. The second contribution of the paper is to extend the diffusion curve representation to include texture details based on Gabor noise. Like the curves themselves, the defined texture is resolution independent, and represented compactly. We define methods to automatically make an initial guess for the noise texure, and we provide intuitive manual controls to edit the parameters of the Gabor noise. Finally, we show that the diffusion curve representation itself extends to storing any number of attributes in an image, and we demonstrate this functionality with image stippling an hatching applications.", "authors_et_al": false, "substitute": null, "main_image": { "description": "descriptive image", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 1609, "image_height": 651, "name": "jeschke-2011-esttalk-image.jpg", "type": "image/jpeg", "size": 410716, "path": "Publication:jeschke-2011-esttalk", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-esttalk/jeschke-2011-esttalk-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-esttalk/jeschke-2011-esttalk-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 356 ], "date_from": "2011-04-20", "date_to": "2011-02-25", "event": "Kolloquium of the Institute for Computer Graphics at University of Rostock", "location": "Rostock, Germany", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "descriptive image", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 1609, "image_height": 651, "name": "jeschke-2011-esttalk-image.jpg", "type": "image/jpeg", "size": 410716, "path": "Publication:jeschke-2011-esttalk", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-esttalk/jeschke-2011-esttalk-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-esttalk/jeschke-2011-esttalk-image:thumb{{size}}.png" }, { "description": "power point slides for this talk", "filetitle": "ppt", "main_file": true, "use_in_gallery": false, "access": "public", "name": "jeschke-2011-esttalk-ppt.ppt", "type": "", "size": 23329792, "path": "Publication:jeschke-2011-esttalk", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-esttalk/jeschke-2011-esttalk-ppt.ppt", "thumb_image_sizes": [] } ], "projects_workgroups": [ "Desiree" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/jeschke-2011-esttalk/", "__class": "Publication" }, { "id": "radits_2011_gahdr", "type_id": "studentproject", "tu_id": null, "repositum_id": null, "title": "A gaze adaptive HDR image viewer", "date": "2011", "abstract": "An HDR image viewer was implemented which adjusts a global tonemapper by analysing local image features at the position of a user's gaze. In the developed prototype the gaze position was specified by the mouse. However, the system was designed to be connected to an eye-tracker in future projects. ", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 354, "image_height": 437, "name": "radits_2011_gahdr-image.png", "type": "image/png", "size": 46136, "path": "Publication:radits_2011_gahdr", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/radits_2011_gahdr/radits_2011_gahdr-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/radits_2011_gahdr/radits_2011_gahdr-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 888 ], "date_end": "2011-03", "date_start": "2010-11", "matrikelnr": "0005880", "supervisor": [ 660 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "Documentation", "filetitle": "documentation", "main_file": false, "use_in_gallery": false, "access": "public", "name": "radits_2011_gahdr-documentation.pdf", "type": "application/pdf", "size": 792908, "path": "Publication:radits_2011_gahdr", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/radits_2011_gahdr/radits_2011_gahdr-documentation.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/radits_2011_gahdr/radits_2011_gahdr-documentation:thumb{{size}}.png" }, { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 354, "image_height": 437, "name": "radits_2011_gahdr-image.png", "type": "image/png", "size": 46136, "path": "Publication:radits_2011_gahdr", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/radits_2011_gahdr/radits_2011_gahdr-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/radits_2011_gahdr/radits_2011_gahdr-image:thumb{{size}}.png" }, { "description": "", "filetitle": "report", "main_file": false, "use_in_gallery": false, "access": "public", "name": "radits_2011_gahdr-report.pdf", "type": "application/pdf", "size": 645945, "path": "Publication:radits_2011_gahdr", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/radits_2011_gahdr/radits_2011_gahdr-report.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/radits_2011_gahdr/radits_2011_gahdr-report:thumb{{size}}.png" } ], "projects_workgroups": [ "GPV" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/radits_2011_gahdr/", "__class": "Publication" }, { "id": "radwan-thesis", "type_id": "runphdthesis", "tu_id": null, "repositum_id": null, "title": "Texture mapping large point clouds with out-of-core point based rendering algorithms", "date": "2011", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 923 ], "date_start": "2011-07", "supervisor": [ 193 ], "research_areas": [ "Geometry" ], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/radwan-thesis/", "__class": "Publication" }, { "id": "RAUCH-2011-TMS", "type_id": "studentproject", "tu_id": null, "repositum_id": null, "title": "Texture Mapping in a Software Rasterizer", "date": "2011", "abstract": "Implementierung von Texture Mapping im CG1-Laborübungs-Framework. Siehe\r\nhttp://www.cg.tuwien.ac.at/courses/EinfCG/UE.html", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 907 ], "date_end": "2011-08-21", "date_start": "2011-02-07", "matrikelnr": "0825084", "supervisor": [ 193 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/RAUCH-2011-TMS/", "__class": "Publication" }, { "id": "Reichinger-2011-Tac", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "High-Quality Tactile Paintings", "date": "2011", "abstract": "The aim of this work is to bring the cultural heritage of two-dimensional art closer to being accessible by blind\r\nand visually impaired people. We present a computer-assisted workflow for the creation of tactile representations\r\nof paintings, suitable to be used as a learning tool in the context of guided tours in museums or galleries. Starting\r\nfrom high-resolution images of original paintings, our process allows an artist to quickly design the desired form,\r\nand generate data suitable for rapid prototyping machines to produce the physical touch tools. Laser-cut layered\r\ndepth diagrams, convey not only the individual objects in the painting and their spatial layout, but also augment\r\ntheir depth relations. CNC-milled textured reliefs additionally render fine details like brush strokes and texture\r\nsuitable for the sense of touch. Our methods mimic aspects of the visual sense, make sure that the haptic output is\r\nquite faithful to the original paintings and do not require special manual abilities, like sculpting skills.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "name": "Reichinger-2011-Tac-.pdf", "type": "application/pdf", "size": 2330074, "path": "Publication:Reichinger-2011-Tac", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Reichinger-2011-Tac/Reichinger-2011-Tac-.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Reichinger-2011-Tac/Reichinger-2011-Tac-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 879, 228, 190 ], "booktitle": "Eurographics 2011 - Areas Papers", "date_from": "2011-04-11", "date_to": "2011-04-15", "editor": "A. Day and R. Mantiuk and E. Reinhard and R. 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In recent years, there have been notable improvements in visual quality and speed, making high-quality realistic real-time shadows a reachable goal.\n\nReal-Time Shadows is a comprehensive guide to the theory and practice of real-time shadow techniques. It covers a large variety of different effects, including hard, soft, volumetric, and semi-transparent shadows.\n\nThe book explains the basics as well as many advanced aspects related to the domain of shadow computation. It presents interactive solutions and practical details on shadow computation. The authors compare various algorithms for creating real-time shadows and illustrate how they are used in different situations. They explore the limitations and failure cases, advantages and disadvantages, and suitability of the algorithms in several applications. Source code, videos, tutorials, and more are available on the book’s website.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "cover", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 267, "image_height": 332, "name": "EISEMANN-2011-RTS-cover.jpg", "type": "image/jpeg", "size": 20308, "path": "Publication:EISEMANN-2011-RTS", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/EISEMANN-2011-RTS/EISEMANN-2011-RTS-cover.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/EISEMANN-2011-RTS/EISEMANN-2011-RTS-cover:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 823, 825, 824, 193 ], "isbn": "978-1568814384", "pages": "398", "publisher": "A.K. 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