[ { "id": "TR-186-2-08-12", "type_id": "techreport", "tu_id": null, "repositum_id": null, "title": "Visual Exploration for Parameter Studies of Industrial CT Dataset Series", "date": "2008-12", "abstract": "This paper proposes comparison and visualization techniques to carry out parameter studies for the special application area of dimensional measurement using 3D X-ray computed tomography~(ICT). A dataset series is generated by scanning a specimen multiple times by varying parameters of an industrial CT device. A high resolution series is explored using our multi-planar reformating (MPR) based exploration system. We present an evaluation system~(multi-image view) and an edge explorer for comparison and visualization of grey values and edges of several datasets simultaneously. Visualization results and quantitative data are displayed side by side. For fast data retrieval and convenient usability we use bricking of the datasets, and efficient data structures. Graphics hardware is used for interactive visualization. We studied the applicability of our proposed visualization techniques in collaboration with our company partners. ", "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": 1024, "name": "TR-186-2-08-12-.png", "type": "image/png", "size": 582022, "path": "Publication:TR-186-2-08-12", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-12/TR-186-2-08-12-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-12/TR-186-2-08-12-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 607, 611, 166 ], "number": "TR-186-2-08-12", "research_areas": [], "keywords": [ "Multi-Datasets", "Industrial Computed Tomography", "MPR", "Visualization" ], "weblinks": [], "files": [ { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1024, "image_height": 1024, "name": "TR-186-2-08-12-.png", "type": "image/png", "size": 582022, "path": "Publication:TR-186-2-08-12", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-12/TR-186-2-08-12-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-12/TR-186-2-08-12-:thumb{{size}}.png" }, { "description": null, "filetitle": "Technical Report", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 1024, "preview_image_height": 1024, "name": "TR-186-2-08-12-Technical Report.pdf", "type": "application/pdf", "size": 3819054, "path": "Publication:TR-186-2-08-12", "preview_name": "TR-186-2-08-12-Technical Report:preview.png", "preview_type": "image/png", "preview_size": 582022, "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-12/TR-186-2-08-12-Technical Report.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-12/TR-186-2-08-12-Technical Report:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-12/", "__class": "Publication" }, { "id": "TR-186-2-08-14", "type_id": "techreport", "tu_id": null, "repositum_id": null, "title": "Smart Linking of 2D and 3D Views in Medical Applications", "date": "2008-12", "abstract": "This paper presents two techniques for the linking of 2D and 3D views in medical applications. Hereby, the\ngoal is a better integration of 3D volume visualization into the diagnostic workflow. Until now, the main obstacle for a good integration is the time-consuming process to adjust various parameters. The LiveSync interaction metaphor is a new concept to synchronize\n2D slice views and 3D volumetric views of medical data sets. A single intuitive picking interaction on anatomical structures which are detected in 2D slices results in an automatically generated 3D view. To further improve the integration contextual picking is\npresented as a method for the interactive identification of contextual interest points within volumetric data.\nOur results demonstrate how these techniques improve the efficiency to generate diagnostically relevant images\nand how contextual interest points can, e.g., facilitate the highlighting of relevant structures.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1098, "image_height": 756, "name": "TR-186-2-08-14-image.jpg", "type": "image/jpeg", "size": 86131, "path": "Publication:TR-186-2-08-14", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-14/TR-186-2-08-14-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-14/TR-186-2-08-14-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 605, 161, 162, 166 ], "number": "TR-186-2-08-14", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1098, "image_height": 756, "name": "TR-186-2-08-14-image.jpg", "type": "image/jpeg", "size": 86131, "path": "Publication:TR-186-2-08-14", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-14/TR-186-2-08-14-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-14/TR-186-2-08-14-image:thumb{{size}}.png" }, { "description": null, "filetitle": "technical report", "main_file": true, "use_in_gallery": false, "access": "public", "name": "TR-186-2-08-14-technical report.pdf", "type": "application/pdf", "size": 3659579, "path": "Publication:TR-186-2-08-14", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-14/TR-186-2-08-14-technical report.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-14/TR-186-2-08-14-technical report:thumb{{size}}.png" } ], "projects_workgroups": [ "diagvis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-14/", "__class": "Publication" }, { "id": "brandstetter-2008-rbf", "type_id": "journalpaper_notalk", "tu_id": null, "repositum_id": null, "title": "Radial Basis Function Networks GPU Based Implementation", "date": "2008-12", "abstract": "", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 774, 191 ], "issn": "1045-9227", "journal": "IEEE Transaction on Neural Network", "number": "12", "pages_from": "2150", "pages_to": "2161", "volume": "19", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/brandstetter-2008-rbf/", "__class": "Publication" }, { "id": "charalambos-thesis_hlod", "type_id": "phdthesis", "tu_id": null, "repositum_id": null, "title": "HLOD Refinement Driven by Hardware Occlusion Queries", "date": "2008-12", "abstract": "In order to achieve interactive rendering of complex models comprising several millions\r\nof polygons, the amount of processed data has to be substantially reduced. Level-ofdetail\r\n(LOD) methods allow the amount of data sent to the GPU to be aggressively\r\nreduced at the expense of sacrificing image quality. Hierarchical level-of-detail (HLOD)\r\nmethods have proved particularly capable of interactive visualisation of huge data sets\r\nby precomputing levels-of-detail at different levels of a spatial hierarchy. HLODs support\r\nout-of-core algorithms in a straightforward way and allow an optimal balance between\r\nCPU and GPU load during rendering.\r\nOcclusion culling represents an orthogonal approach for reducing the amount of rendered\r\nprimitives. Occlusion culling methods aim to quickly cull the invisible part of the\r\nmodel and render only its visible part. Most recent methods use hardware occlusion\r\nqueries (HOQs) to achieve this task.\r\nThe effects of HLODs and occlusion culling can be successfully combined. Firstly,\r\nnodes which are completely invisible can be culled. Secondly, HOQ results can be used\r\nfor visible nodes when refining an HLOD model; according to the degree of visibility of a\r\nnode and the visual masking perceptual phenomenon, then it could be determined that\r\nthere would be no gain in the final appearance of the image obtained if the node were\r\nfurther refined. In the latter case, HOQs allow more aggressive culling of the HLOD\r\nhierarchy, further reducing the amount of rendered primitives. However, due to the\r\nlatency between issuing an HOQ and the availability of its result, the direct use of HOQs\r\nfor refinement criteria cause CPU stalls and GPU starvation.\r\nThis thesis introduces a novel error metric, taking visibility information (gathered from\r\nHOQs) as an integral part of refining an HLOD model, this being the first approach\r\nwithin this context to the best of our knowledge. A novel traversal algorithm for HLOD\r\nrefinement is also presented for taking full advantage of the introduced HOQ-based error\r\nmetric. The algorithm minimises CPU stalls and GPU starvation by predicting HLOD\r\nrefinement conditions using spatio-temporal coherence of visibility.\r\nSome properties of the combined approach presented here involve improved performance\r\nhaving the same visual quality (whilst our occlusion culling technique still remained\r\nconservative). Our error metric supports both polygon-based and point-based\r\nHLODs, ensuring full use of HOQ results (our error metrics take full advantage of the\r\ninformation gathered in HOQs). Our traversal algorithm makes full use of the spatial\r\nand temporal coherency inherent in hierarchical representations. Our approach can be\r\nstraightforwardly implemented.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1000, "image_height": 478, "name": "charalambos-thesis_hlod-image.png", "type": "image/png", "size": 134213, "path": "Publication:charalambos-thesis_hlod", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/charalambos-thesis_hlod/charalambos-thesis_hlod-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/charalambos-thesis_hlod/charalambos-thesis_hlod-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 621 ], "co_supervisor": [ 686 ], "date_end": "2008", "rigorosum": "2008-02-20", "supervisor": [ 193 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1000, "image_height": 478, "name": "charalambos-thesis_hlod-image.png", "type": "image/png", "size": 134213, "path": "Publication:charalambos-thesis_hlod", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/charalambos-thesis_hlod/charalambos-thesis_hlod-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/charalambos-thesis_hlod/charalambos-thesis_hlod-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "charalambos-thesis_hlod-paper.pdf", "type": "application/pdf", "size": 2553154, "path": "Publication:charalambos-thesis_hlod", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/charalambos-thesis_hlod/charalambos-thesis_hlod-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/charalambos-thesis_hlod/charalambos-thesis_hlod-paper:thumb{{size}}.png" } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/charalambos-thesis_hlod/", "__class": "Publication" }, { "id": "reitsamer-2008-tsud", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Texture Synthesis for Urban Data", "date": "2008-11", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 424, "image_height": 225, "name": "reitsamer-2008-tsud-image.jpg", "type": "image/jpeg", "size": 47591, "path": "Publication:reitsamer-2008-tsud", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/reitsamer-2008-tsud/reitsamer-2008-tsud-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/reitsamer-2008-tsud/reitsamer-2008-tsud-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 740 ], "date_end": "2008", "date_start": "2008", "diploma_examina": "2008-11-22", "matrikelnr": "0000000", "supervisor": [ 193 ], "research_areas": [ "Modeling" ], "keywords": [], "weblinks": [], "files": [ { "description": null, "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 424, "image_height": 225, "name": "reitsamer-2008-tsud-image.jpg", "type": "image/jpeg", "size": 47591, "path": "Publication:reitsamer-2008-tsud", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/reitsamer-2008-tsud/reitsamer-2008-tsud-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/reitsamer-2008-tsud/reitsamer-2008-tsud-image:thumb{{size}}.png" }, { "description": null, "filetitle": "thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "reitsamer-2008-tsud-thesis.pdf", "type": "application/pdf", "size": 20723094, "path": "Publication:reitsamer-2008-tsud", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/reitsamer-2008-tsud/reitsamer-2008-tsud-thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/reitsamer-2008-tsud/reitsamer-2008-tsud-thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/reitsamer-2008-tsud/", "__class": "Publication" }, { "id": "Scheiblauer-2008-DCW", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Domitilla Catacomb Walkthrough - dealing with more than 1 billion points", "date": "2008-11", "abstract": "Range laser scanning evolved as a means for documenting buildings or archeological excavation sites. Point clouds resulting from these laser scans can consist of hundreds of millions of points. To get a clean model from this vast amount of data needs several person months. Instead we try to visualize the data directly, so archeologists can have a quick overview of the already scanned areas (e.g., during a scanning campaign). The models in our viewer are combined point clouds from several scan positions, and it is possible to add new point clouds to an existing model. We also allow for deleting points from the model. Furthermore we developed a heuristic to estimate point sizes, which enables the viewer to display surfaces as closed objects without a special preprocessing step. For the point size heuristic it suffices to know the positions of the points.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Overview of the Domitilla Catacomb model", "filetitle": "Image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1598, "image_height": 1061, "name": "Scheiblauer-2008-DCW-Image.jpg", "type": "image/jpeg", "size": 304984, "path": "Publication:Scheiblauer-2008-DCW", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Scheiblauer-2008-DCW/Scheiblauer-2008-DCW-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Scheiblauer-2008-DCW/Scheiblauer-2008-DCW-Image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 614 ], "booktitle": "Proceedings of the 13th International Congress on Cultural Heritage and New Technologies", "date_from": "2008-11-03", "date_to": "2008-11-05", "isbn": "978-3-85161-016-1", "lecturer": [ 614 ], "location": "Vienna City Hall", "note": "Cultural Heritage & New Technologies", "series": "Tagungsreihe \"Kulturelles Erbe und Neue Technologien\" - Workshop \"Archäologie und Computer\"", "research_areas": [ "Geometry" ], "keywords": [ "laser scanning", "virtual reconstruction", "point-based rendering" ], "weblinks": [], "files": [ { "description": "Overview of the Domitilla Catacomb model", "filetitle": "Image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1598, "image_height": 1061, "name": "Scheiblauer-2008-DCW-Image.jpg", "type": "image/jpeg", "size": 304984, "path": "Publication:Scheiblauer-2008-DCW", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Scheiblauer-2008-DCW/Scheiblauer-2008-DCW-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Scheiblauer-2008-DCW/Scheiblauer-2008-DCW-Image:thumb{{size}}.png" }, { "description": "The paper submitted to the conference", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Scheiblauer-2008-DCW-Paper.pdf", "type": "application/pdf", "size": 1407511, "path": "Publication:Scheiblauer-2008-DCW", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Scheiblauer-2008-DCW/Scheiblauer-2008-DCW-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Scheiblauer-2008-DCW/Scheiblauer-2008-DCW-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "Scanopy" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Scheiblauer-2008-DCW/", "__class": "Publication" }, { "id": "Matkovic-2008-Steer", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Interactive Visual Steering – Rapid Visual Prototyping of a Common Rail Injection System", "date": "2008-11", "abstract": "Interactive steering with visualization has been a common goal of the visualization research community for twenty years,\r\nbut it is rarely ever realized in practice. In this paper we describe a successful realization of a tightly coupled steering loop, integrating\r\nnew simulation technology and interactive visual analysis in a prototyping environment for automotive industry system design. Due\r\nto increasing pressure on car manufacturers to meet new emission regulations, to improve efficiency, and to reduce noise, both simulation\r\nand visualization are pushed to their limits. Automotive system components, such as the powertrain system or the injection\r\nsystem, have an increasing number of parameters, and new design approaches are required. It is no longer possible to optimize\r\nsuch a system solely based on experience or forward optimization. By coupling interactive visualization with the simulation back-end\r\n(computational steering), it is now possible to quickly prototype a new system, starting from a non-optimized initial prototype and the\r\ncorresponding simulation model. The prototyping continues through the refinement of the simulation model, of the simulation parameters\r\nand through trial-and-error attempts to an optimized solution. The ability to early see the first results from a multidimensional\r\nsimulation space — thousands of simulations are run for a multidimensional variety of input parameters — and to quickly go back\r\ninto the simulation and request more runs in particular parameter regions of interest significantly improves the prototyping process\r\nand provides a deeper understanding of the system behavior. The excellent results which we achieved for the common rail injection\r\nsystem strongly suggest that our approach has a great potential of being generalized to other, similar scenarios.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 434, "image_height": 473, "name": "Matkovic-2008-Steer-image.jpg", "type": "image/jpeg", "size": 64694, "path": "Publication:Matkovic-2008-Steer", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Matkovic-2008-Steer/Matkovic-2008-Steer-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Matkovic-2008-Steer/Matkovic-2008-Steer-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 235, 581, 579, 176 ], "date_from": "2008-10-19", "date_to": "2008-10-24", "event": "IEEE Vis", "journal": "IEEE Transactions on Visualization and Computer Graphics ", "lecturer": [ 235 ], "location": "Columbus, Ohio", "number": "6", "volume": "14", "research_areas": [], "keywords": [ "Interactive computational steering", "interactive visual analysis", "simulation", "common rail injection system" ], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 434, "image_height": 473, "name": "Matkovic-2008-Steer-image.jpg", "type": "image/jpeg", "size": 64694, "path": "Publication:Matkovic-2008-Steer", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Matkovic-2008-Steer/Matkovic-2008-Steer-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Matkovic-2008-Steer/Matkovic-2008-Steer-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": false, "use_in_gallery": false, "access": "public", "name": "Matkovic-2008-Steer-paper.pdf", "type": "application/pdf", "size": 4069558, "path": "Publication:Matkovic-2008-Steer", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Matkovic-2008-Steer/Matkovic-2008-Steer-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Matkovic-2008-Steer/Matkovic-2008-Steer-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "VRVis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Matkovic-2008-Steer/", "__class": "Publication" }, { "id": "TRA08b", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "The Harris Matrix Composer - A New Tool to Manage Archaeological Stratigraphy", "date": "2008-11", "abstract": "The Harris Matrix - formulated by Dr. Edward C. Harris in 1973 - is the established way of representing the archaeological stratigraphy of an excavation. The Harris Matrix is a sequential diagram defining stratigraphic relations between stratigraphic units. It is an important method to document the stratification that is destroyed by the excavation process and hence a vital tool for stratigraphic analysis. \r\nAlthough the Harris Matrix has become a quasi standard of archaeological stratigraphy, only a few software tools exist to create and edit these diagrams. An evaluation of these tools showed that they do not completely comply with the theory or suffer from poor usability. Therefore we decided to develop a new application addressing these issues, called Harris Matrix Composer (HMC). Dr. Harris was involved in the evaluation of early prototypes to guarantee compliance with his theory. User tests were undertaken to discover and handle usability problems.\r\nThe main component of the HMC is a graph editor with an intuitive graphical user interface for creating and editing a Harris Matrix throughout the entire stratigraphic excavation process. Users add graphical symbols that represent stratigraphic units (either deposits or surfaces) and determine their stratigraphic relations by drawing edges between two such symbols. The application supports valid Harris Matrix creation and indicates invalid units and relations. In addition to stratigraphic relations, temporal relations can be added by drawing special edges or grouping units into periods. Phases define structural relations, like posts or postholes of a dwelling. \r\nThe HMC will be developed into a powerful interface to a GIS system, like ArcGIS to access single surface maps and related databases for visualization and stratigraphic analysis by selecting units of the Harris Matrix. In a similar way it will work together with the point cloud editor SCANOPY to filter these vast data sets.\r\nA trial beta version and further information is available at the web site: www.harrismatrixcomposer.com\r\n", "authors_et_al": false, "substitute": null, "main_image": { "description": "HMC Screenshot", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 800, "image_height": 600, "name": "TRA08b-image.jpg", "type": "image/jpeg", "size": 249701, "path": "Publication:TRA08b", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TRA08b/TRA08b-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/TRA08b/TRA08b-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 237, 480 ], "address": "Rathaus, Friedrich-Schmidt- Platz 1, 1010 Vienna", "booktitle": "Kulturelles Erbe und Neue Technologien − Workshop \"Archäologie und Computer\"", "date_from": "2008-11-03", "date_to": "2008-11-05", "editor": "Wolfgang Börner, Susanne Uhlirz", "isbn": "978-3-85161-016-1", "lecturer": [ 237 ], "location": "Vienna, Austria", "note": "http://www.stadtarchaeologie.at/", "organization": "Museen der Stadt Wien – Stadtarchäologie", "publisher": "Phoibos Verlag", "series": "Archäologie und Computer", "research_areas": [], "keywords": [ "harris matrix", "archaeological stratigraphy", "graph theory" ], "weblinks": [], "files": [ { "description": "HMC Screenshot", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 800, "image_height": 600, "name": "TRA08b-image.jpg", "type": "image/jpeg", "size": 249701, "path": "Publication:TRA08b", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TRA08b/TRA08b-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/TRA08b/TRA08b-image:thumb{{size}}.png" }, { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "TRA08b-Paper.pdf", "type": "application/pdf", "size": 847634, "path": "Publication:TRA08b", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TRA08b/TRA08b-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/TRA08b/TRA08b-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "LEOPOLD" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TRA08b/", "__class": "Publication" }, { "id": "Freiler-2008-Set", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Interactive Visual Analysis of Set-Typed Data", "date": "2008-11", "abstract": "While it is quite typical to deal with attributes of different data types in the visualization of heterogeneous, multivariate\r\ndatasets, most existing techniques still focus on the most usual data types such as numerical attributes or strings.\r\nIn this paper we present a new approach to the interactive visual exploration and analysis of data that contains attributes which are\r\nof set type. A set-typed attribute of a data item – like one cell in a table – has a list of n ¸ 0 elements as a value. We present the\r\nset’o’gram as a visualization approach to represent data of set type and to enable interactive visual analysis. We also demonstrate\r\nhow this approach is capable to help in dealing with datasets that have truly many dimensions (more than a dozen or more), especially\r\nin the context of categorical data.\r\nTo illustrate the effectiveness of our approach, we present the interactive visual analysis of a CRM dataset with data from a questionnaire\r\non the education and shopping habits of about 90000 people.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 630, "image_height": 657, "name": "Freiler-2008-Set-image.jpg", "type": "image/jpeg", "size": 56843, "path": "Publication:Freiler-2008-Set", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Freiler-2008-Set/Freiler-2008-Set-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Freiler-2008-Set/Freiler-2008-Set-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 758, 235, 176 ], "date_from": "2008-10-19", "date_to": "2008-10-24", "event": "IEEE Info Vis ", "journal": "IEEE Transactions on Visualization and Computer Graphics", "lecturer": [ 758 ], "location": "Columbus, Ohio", "number": "6", "volume": "14", "research_areas": [], "keywords": [ "Interactive Visual Analysis", " Multiple Coordinated Views", "Focus & Context", "Categorical Data", "Multidimensional Multivariate Data" ], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 630, "image_height": 657, "name": "Freiler-2008-Set-image.jpg", "type": "image/jpeg", "size": 56843, "path": "Publication:Freiler-2008-Set", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Freiler-2008-Set/Freiler-2008-Set-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Freiler-2008-Set/Freiler-2008-Set-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Freiler-2008-Set-paper.pdf", "type": "application/pdf", "size": 593020, "path": "Publication:Freiler-2008-Set", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Freiler-2008-Set/Freiler-2008-Set-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Freiler-2008-Set/Freiler-2008-Set-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "VRVis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Freiler-2008-Set/", "__class": "Publication" }, { "id": "emsenhuber-2008-vhd", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Visibility Histograms in Direct Volume Rendering", "date": "2008-11", "abstract": "This thesis introduces visibility histograms as a method for analyzing volumetric\r\ndatasets. These histograms show how much the data points within a 3D dataset\r\nthat have the same scalar value influence the image which is created by rendering\r\nthe dataset with a particular transfer function and from a particular viewing\r\ndirection. These histograms can be used to gain insights into the internal structure\r\nof volumetric datasets, in particular information about occlusions. Furthermore,\r\nthe possibility of automatically calculating transfer functions which generate a\r\nparticular visibility histogram when applied to a dataset from a particular viewing\r\ndirection is explored. Two methods which can be used to calculate a matching\r\ntransfer function for a visibility histogram are explained, one of which is based on\r\na genetic algorithm approach, while the other is an heuristic.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 974, "image_height": 952, "name": "emsenhuber-2008-vhd-image.jpg", "type": "image/jpeg", "size": 268852, "path": "Publication:emsenhuber-2008-vhd", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/emsenhuber-2008-vhd/emsenhuber-2008-vhd-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/emsenhuber-2008-vhd/emsenhuber-2008-vhd-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 568 ], "diploma_examina": "2008-11-04", "supervisor": [ 166, 161 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 974, "image_height": 952, "name": "emsenhuber-2008-vhd-image.jpg", "type": "image/jpeg", "size": 268852, "path": "Publication:emsenhuber-2008-vhd", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/emsenhuber-2008-vhd/emsenhuber-2008-vhd-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/emsenhuber-2008-vhd/emsenhuber-2008-vhd-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "emsenhuber-2008-vhd-paper.pdf", "type": "application/pdf", "size": 4728623, "path": "Publication:emsenhuber-2008-vhd", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/emsenhuber-2008-vhd/emsenhuber-2008-vhd-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/emsenhuber-2008-vhd/emsenhuber-2008-vhd-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/emsenhuber-2008-vhd/", "__class": "Publication" }, { "id": "deix-2008-rcp", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Der Re-Compose Prototyp", "date": "2008-11", "abstract": "This diploma thesis has been set up in collaboration with Re-Compose GmbH and\r\nits founder and managing director, Dr. Stefan Oertl. The main focus was the implementation\r\nof prototype software which connects audio software applications to a\r\nmusic analysis module developed by Re-Compose employee, DI Brigitte Rafael. An audio\r\nhost sequencer and the former mentioned Re-Compose Logic are linked via the\r\nVirtual Studio Technology interface (VST). Music information is exchanged via the\r\nMusical Instrument Digital Interface protocol (MIDI). The prototype employs the Java\r\nNative Interface (JNI) to invoke the Re-Compose analysis module coded in the Java\r\nprogramming language. This paper describes the design and structure of the implemented\r\nRe-Compose prototype and gives a prospect of future challenges.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 753 ], "diploma_examina": "2008-11-26", "supervisor": [ 190 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "deix-2008-rcp-paper.pdf", "type": "application/pdf", "size": 1004058, "path": "Publication:deix-2008-rcp", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/deix-2008-rcp/deix-2008-rcp-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/deix-2008-rcp/deix-2008-rcp-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/deix-2008-rcp/", "__class": "Publication" }, { "id": "fuchs-vortex", "type_id": "phdthesis", "tu_id": null, "repositum_id": null, "title": "The Visible Vortex - Interactive Analysis and Extraction of Vortices in Large Time-Dependent Flow Data Sets", "date": "2008-10", "abstract": "Computational simulation of physical and chemical processes has become an essential tool to tackle questions from the field of fluid dynamics.\nUsing current simulation packages it is possible to compute unsteady flow simulations for\nrealistic scenarios. The resulting solutions are stored in large to very large grids in 2D or 3D,\nfrequently time-dependent, with multi-variate results from the numeric simulation.\nWith increasing complexity of simulation results,\npowerful analysis and visualization tools are needed to make sense of the computed information and answer\nthe question at hand. To do this we need new approaches and algorithms to locate regions of\ninterest, find important structures in the flow and analyze the behavior of the\nflow interactively.\n\nThe main motives of this thesis are the extension of vortex detection criteria to unsteady flow and\nthe combination of vortex detectors with interactive visual analysis.\nTo develop an understanding for the simulation results it is necessary to\ncompare attributes of the simulation to each other and to be able to\nrelate them to larger structures such as vortices. It is shown how automatic feature detection algorithms can be combined with interactive analysis techniques such that both detection and analysis benefit.\n\nBy extending and integrating vortex detectors into the process of visual analysis, it becomes possible\nto understand the impact of vortex structures on the development of\nthe flow. Using real-world examples from the field of engine design we discuss how vortex structures\ncan have critical impact on the performance of a prototype. We illustrate how interactive visual analysis\ncan support prototype design and evaluation.\nFurthermore, we show that taking the unsteady nature of the flow into account improves the quality of the extracted structures.", "authors_et_al": false, "substitute": null, "main_image": { "description": "We illustrate some of the extensions to vortex region analysis discussed throughout this thesis. (1) We start with binary vortex detectors. It is hard to understand where the structures originate and how they are related to the geometry. (2) Using non-binary vortex detectors we can select only the parts of the volume that contain relevant structures. (3) By combining multiple criteria it is possible to refine the selection further and it becomes obvious that the gaskets between cylinder head and body are of critical importance. (4) Using delocalization we can further refine the selection and remove noise from the results.", "filetitle": "Figure1", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1284, "image_height": 1271, "name": "fuchs-vortex-Figure1.png", "type": "image/png", "size": 1216763, "path": "Publication:fuchs-vortex", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs-vortex/fuchs-vortex-Figure1.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs-vortex/fuchs-vortex-Figure1:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 672 ], "co_supervisor": [ 695 ], "date_end": "2008-10", "date_start": "2006-06", "rigorosum": "2008-10-09", "supervisor": [ 176 ], "research_areas": [], "keywords": [ "Interactive Visual Analysis", "Vortex Detection", "Scientific Visualization" ], "weblinks": [], "files": [ { "description": "We illustrate some of the extensions to vortex region analysis discussed throughout this thesis. (1) We start with binary vortex detectors. It is hard to understand where the structures originate and how they are related to the geometry. (2) Using non-binary vortex detectors we can select only the parts of the volume that contain relevant structures. (3) By combining multiple criteria it is possible to refine the selection further and it becomes obvious that the gaskets between cylinder head and body are of critical importance. (4) Using delocalization we can further refine the selection and remove noise from the results.", "filetitle": "Figure1", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1284, "image_height": 1271, "name": "fuchs-vortex-Figure1.png", "type": "image/png", "size": 1216763, "path": "Publication:fuchs-vortex", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs-vortex/fuchs-vortex-Figure1.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs-vortex/fuchs-vortex-Figure1:thumb{{size}}.png" }, { "description": null, "filetitle": "thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "fuchs-vortex-thesis.pdf", "type": "application/pdf", "size": 28629831, "path": "Publication:fuchs-vortex", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs-vortex/fuchs-vortex-thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs-vortex/fuchs-vortex-thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "PVG" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs-vortex/", "__class": "Publication" }, { "id": "hartl-2008-vcd", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Visualization of Calendar Data", "date": "2008-10", "abstract": "Since many centuries, calendars are used to organize appointments, events and tasks.\r\nIn this thesis interaction and visualization techniques for calendar data are presented,\r\nwhich do not only support the organization and analysis, but also facilitate and improve\r\nthem. The basis of the solution is a 3D heightfield visualization, which displays\r\nthe workloads of time slots over periods of time in a compact manner. Thereon, interaction\r\nand visualization techniques are used to investigate the data set for regularities\r\nand irregularities. The comparison of data sets while planning events is just as important\r\nas the integration of fuzzy tasks into one’s schedule and their manipulation.\r\nThe visualization and exploration process is completed by statistical representations\r\nshowing trends and patterns. The use of these techniques and the combination of\r\nthem are presented with the help of real examples.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 974, "image_height": 977, "name": "hartl-2008-vcd-image.jpg", "type": "image/jpeg", "size": 241616, "path": "Publication:hartl-2008-vcd", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/hartl-2008-vcd/hartl-2008-vcd-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/hartl-2008-vcd/hartl-2008-vcd-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 619 ], "diploma_examina": "2008-10-27", "supervisor": [ 166, 179 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "Diplimarbeits Endvortrag", "filetitle": "DAEV", "main_file": true, "use_in_gallery": false, "access": "public", "name": "hartl-2008-vcd-DAEV.pdf", "type": "application/pdf", "size": 651439, "path": "Publication:hartl-2008-vcd", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/hartl-2008-vcd/hartl-2008-vcd-DAEV.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/hartl-2008-vcd/hartl-2008-vcd-DAEV:thumb{{size}}.png" }, { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 974, "image_height": 977, "name": "hartl-2008-vcd-image.jpg", "type": "image/jpeg", "size": 241616, "path": "Publication:hartl-2008-vcd", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/hartl-2008-vcd/hartl-2008-vcd-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/hartl-2008-vcd/hartl-2008-vcd-image:thumb{{size}}.png" }, { "description": "", "filetitle": "poster", "main_file": true, "use_in_gallery": false, "access": "public", "name": "hartl-2008-vcd-poster.pdf", "type": "application/pdf", "size": 56140734, "path": "Publication:hartl-2008-vcd", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/hartl-2008-vcd/hartl-2008-vcd-poster.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/hartl-2008-vcd/hartl-2008-vcd-poster:thumb{{size}}.png" }, { "description": "", "filetitle": "Thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "hartl-2008-vcd-Thesis.pdf", "type": "application/pdf", "size": 6727226, "path": "Publication:hartl-2008-vcd", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/hartl-2008-vcd/hartl-2008-vcd-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/hartl-2008-vcd/hartl-2008-vcd-Thesis:thumb{{size}}.png" }, { "description": "", "filetitle": "vcd-paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "hartl-2008-vcd-vcd-paper.pdf", "type": "application/pdf", "size": 6681877, "path": "Publication:hartl-2008-vcd", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/hartl-2008-vcd/hartl-2008-vcd-vcd-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/hartl-2008-vcd/hartl-2008-vcd-vcd-paper:thumb{{size}}.png" }, { "description": "", "filetitle": "video", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 640, "preview_image_height": 564, "name": "hartl-2008-vcd-video.avi", "type": "video/x-msvideo", "size": 30114566, "path": "Publication:hartl-2008-vcd", "preview_name": "hartl-2008-vcd-video:preview.png", "preview_type": "image/jpeg", "preview_size": 57514, "url": "https://www.cg.tuwien.ac.at/research/publications/2008/hartl-2008-vcd/hartl-2008-vcd-video.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/hartl-2008-vcd/hartl-2008-vcd-video:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2008/hartl-2008-vcd/hartl-2008-vcd-video:video.mp4" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/hartl-2008-vcd/", "__class": "Publication" }, { "id": "heinzl-2008-sam", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Statistical Analysis of Multi-Material Components using Dual Energy CT", "date": "2008-10", "abstract": "", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 397, "image_height": 188, "name": "heinzl-2008-sam-image.jpg", "type": "image/jpeg", "size": 31677, "path": "Publication:heinzl-2008-sam", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/heinzl-2008-sam/heinzl-2008-sam-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/heinzl-2008-sam/heinzl-2008-sam-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 611, 613, 196, 166 ], "booktitle": "VMV 2008, Vision, Modeling and Visualization", "date_from": "2008-10-08", "date_to": "2008-10-10", "editor": "Oliver Deussen, Daniel Keim, Dietmar Saupe", "isbn": "978-3-89838-609-8", "lecturer": [ 611 ], "location": "Konstanz, Deutschland", "pages_from": "179", "pages_to": "188", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 397, "image_height": 188, "name": "heinzl-2008-sam-image.jpg", "type": "image/jpeg", "size": 31677, "path": "Publication:heinzl-2008-sam", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/heinzl-2008-sam/heinzl-2008-sam-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/heinzl-2008-sam/heinzl-2008-sam-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "heinzl-2008-sam-paper.pdf", "type": "application/pdf", "size": 1195541, "path": "Publication:heinzl-2008-sam", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/heinzl-2008-sam/heinzl-2008-sam-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/heinzl-2008-sam/heinzl-2008-sam-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/heinzl-2008-sam/", "__class": "Publication" }, { "id": "termeer-2008-vis", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Visualization of Myocardial Perfusion Derived from Coronary Anatomy", "date": "2008-10", "abstract": "Visually assessing the effect of the coronary artery anatomy on the perfusion of the heart muscle in patients with coronary artery disease remains a challenging task. We explore the feasibility of visualizing this effect on perfusion using a numerical approach. We perform a computational simulation of the way blood is perfused throughout the myocardium purely based on information from a three-dimensional anatomical tomographic scan. The results are subsequently visualized using both three-dimensional visualizations and bull's eye plots, partially inspired by approaches currently common in medical practice. Our approach results in a comprehensive visualization of the coronary anatomy that compares well to visualizations commonly used for other scanning technologies. We demonstrate techniques giving detailed insight in blood supply, coronary territories and feeding coronary arteries of a selected region. We demonstrate the advantages of our approach through visualizations that show information which commonly cannot be directly observed in scanning data, such as a separate visualization of the supply from each coronary artery. We thus show that the results of a computational simulation can be effectively visualized and facilitate visually correlating these results to for example perfusion data. ", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1026, "image_height": 947, "name": "termeer-2008-vis-image.png", "type": "image/png", "size": 641384, "path": "Publication:termeer-2008-vis", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/termeer-2008-vis/termeer-2008-vis-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/termeer-2008-vis/termeer-2008-vis-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 606, 647, 679, 459, 575, 166, 746 ], "date_from": "2008-10-19", "date_to": "2008-10-24", "event": "IEEE Visualization 2008", "issn": "1077-2626", "journal": "TVCG", "lecturer": [ 606 ], "location": "Columbus, USA", "number": "6", "pages_from": "1595", "pages_to": "1602", "volume": "14", "research_areas": [], "keywords": [ "myocardial perfusion", "coronary artery territories", "cardiac visualization" ], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1026, "image_height": 947, "name": "termeer-2008-vis-image.png", "type": "image/png", "size": 641384, "path": "Publication:termeer-2008-vis", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/termeer-2008-vis/termeer-2008-vis-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/termeer-2008-vis/termeer-2008-vis-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "termeer-2008-vis-paper.pdf", "type": "application/pdf", "size": 4436801, "path": "Publication:termeer-2008-vis", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/termeer-2008-vis/termeer-2008-vis-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/termeer-2008-vis/termeer-2008-vis-paper:thumb{{size}}.png" }, { "description": "", "filetitle": "video", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 640, "preview_image_height": 624, "name": "termeer-2008-vis-video.avi", "type": "video/x-msvideo", "size": 21174952, "path": "Publication:termeer-2008-vis", "preview_name": "termeer-2008-vis-video:preview.png", "preview_type": "image/jpeg", "preview_size": 24157, "url": "https://www.cg.tuwien.ac.at/research/publications/2008/termeer-2008-vis/termeer-2008-vis-video.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/termeer-2008-vis/termeer-2008-vis-video:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2008/termeer-2008-vis/termeer-2008-vis-video:video.mp4" } ], "projects_workgroups": [ "COMRADE" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/termeer-2008-vis/", "__class": "Publication" }, { "id": "haidacher-2008-vcbm", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Information-based Transfer Functions for Multimodal Visualization", "date": "2008-10", "abstract": "Transfer functions are an essential part of volume visualization. In multimodal visualization at least two values\r\nexist at every sample point. Additionally, other parameters, such as gradient magnitude, are often retrieved for\r\neach sample point. To find a good transfer function for this high number of parameters is challenging because of\r\nthe complexity of this task. In this paper we present a general information-based approach for transfer function\r\ndesign in multimodal visualization which is independent of the used modality types. Based on information theory,\r\nthe complex multi-dimensional transfer function space is fused to allow utilization of a well-known 2D transfer\r\nfunction with a single value and gradient magnitude as parameters. Additionally, a quantity is introduced which\r\nenables better separation of regions with complementary information. The benefit of the new method in contrast to\r\nother techniques is a transfer function space which is easy to understand and which provides a better separation\r\nof different tissues. The usability of the new approach is shown on examples of different modalities.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Multimodal Visualization of CT and MRI", "filetitle": "CT-MRI", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1446, "image_height": 1446, "name": "haidacher-2008-vcbm-CT-MRI.jpg", "type": "image/jpeg", "size": 2466928, "path": "Publication:haidacher-2008-vcbm", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/haidacher-2008-vcbm/haidacher-2008-vcbm-CT-MRI.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/haidacher-2008-vcbm/haidacher-2008-vcbm-CT-MRI:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 597, 161, 162, 166 ], "booktitle": "VCBM ", "editor": "C.P Botha, G. Kindlmann, W.J. Niessen, and B. Preim", "isbn": "978-3-905674-13-2", "issn": "2070-5778", "lecturer": [ 597 ], "location": "Delft", "pages_from": "101", "pages_to": "108", "publisher": "Eurographics Association", "research_areas": [], "keywords": [ "Multimodal Visualization", "Transfer Function", "Information Theory" ], "weblinks": [], "files": [ { "description": "Multimodal Visualization of CT and MRI", "filetitle": "CT-MRI", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1446, "image_height": 1446, "name": "haidacher-2008-vcbm-CT-MRI.jpg", "type": "image/jpeg", "size": 2466928, "path": "Publication:haidacher-2008-vcbm", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/haidacher-2008-vcbm/haidacher-2008-vcbm-CT-MRI.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/haidacher-2008-vcbm/haidacher-2008-vcbm-CT-MRI:thumb{{size}}.png" }, { "description": "Multimodal Visualization of Neck Tumor", "filetitle": "CT-PET", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1444, "image_height": 1167, "name": "haidacher-2008-vcbm-CT-PET.jpg", "type": "image/jpeg", "size": 1722886, "path": "Publication:haidacher-2008-vcbm", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/haidacher-2008-vcbm/haidacher-2008-vcbm-CT-PET.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/haidacher-2008-vcbm/haidacher-2008-vcbm-CT-PET:thumb{{size}}.png" }, { "description": "Publication from VCBM 2008", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "haidacher-2008-vcbm-Paper.pdf", "type": "application/pdf", "size": 11949177, "path": "Publication:haidacher-2008-vcbm", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/haidacher-2008-vcbm/haidacher-2008-vcbm-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/haidacher-2008-vcbm/haidacher-2008-vcbm-Paper:thumb{{size}}.png" }, { "description": "Slides of Presentation at VCBM", "filetitle": "Presentation", "main_file": true, "use_in_gallery": false, "access": "public", "name": "haidacher-2008-vcbm-Presentation.pptx", "type": "application/x-zip", "size": 32101483, "path": "Publication:haidacher-2008-vcbm", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/haidacher-2008-vcbm/haidacher-2008-vcbm-Presentation.pptx", "thumb_image_sizes": [] } ], "projects_workgroups": [ "diagvis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/haidacher-2008-vcbm/", "__class": "Publication" }, { "id": "fuchs-2008-del", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Delocalized Unsteady Vortex Region Detectors", "date": "2008-10", "abstract": "In this paper we discuss generalizations of instantaneous, local vortex criteria.\r\nWe incorporate information on spatial context and temporal development into the\r\ndetection process. The presented method is generic in so far that it can extend\r\nany given Eulerian criterion to take the Lagrangian approach into account. Furthermore,\r\nwe present a visual aid to understand and steer the feature extraction process.\r\nWe show that the delocalized detectors are able to distinguish between connected vortices\r\nand help understanding regions of multiple interacting vortex structures.\r\nThe delocalized detectors extract smoother structures and reduce noise in the vortex detection result.", "authors_et_al": false, "substitute": null, "main_image": { "description": "We compare the resulting features for the standard lambda2 and the delocalized lambda2 criterion.", "filetitle": "delocalized", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1705, "image_height": 1405, "name": "fuchs-2008-del-delocalized.jpg", "type": "image/jpeg", "size": 327185, "path": "Publication:fuchs-2008-del", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs-2008-del/fuchs-2008-del-delocalized.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs-2008-del/fuchs-2008-del-delocalized:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 672, 695, 696, 734, 166 ], "booktitle": "Proceedings VMV 2008", "date_from": "2008-10-08", "date_to": "2008-10-10", "editor": "Oliver Deussen, Daniel Keim, Dietmar Saupe", "isbn": "978-3-89838-609-8", "lecturer": [ 696 ], "location": "Konstanz, Deutschland", "pages_from": "81", "pages_to": "90", "research_areas": [], "keywords": [ "anisotropic filtering", "vortex detection", "interactive visual analysis" ], "weblinks": [], "files": [ { "description": "We compare the resulting features for the standard lambda2 and the delocalized lambda2 criterion.", "filetitle": "delocalized", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1705, "image_height": 1405, "name": "fuchs-2008-del-delocalized.jpg", "type": "image/jpeg", "size": 327185, "path": "Publication:fuchs-2008-del", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs-2008-del/fuchs-2008-del-delocalized.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs-2008-del/fuchs-2008-del-delocalized:thumb{{size}}.png" }, { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "fuchs-2008-del-Paper.pdf", "type": "application/pdf", "size": 2802166, "path": "Publication:fuchs-2008-del", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs-2008-del/fuchs-2008-del-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs-2008-del/fuchs-2008-del-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "PVG" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs-2008-del/", "__class": "Publication" }, { "id": "ammer-2008-lst", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Linking Science Together: How Networking Can Support Research – a Peer-to-Peer Approach", "date": "2008-10", "abstract": "Since no development or invention just appears out of nowhere, the search for\r\nformer and related work is an important part of the whole research process. During\r\nthis part of the research \u0015 by \u001cnding, \u001cltering and connecting the knowledge\r\nfound in publications of other researchers \u0015 insight in a research area is acquired.\r\nThis insight, if represented and stored in an appropriate way, can be seen as\r\nnew generated knowledge and could be reused by other researchers as well.\r\nThis work therefore proposes a system of interlinked nodes, in which nodes,\r\nattributes, links and groupings can be shared over a peer-to-peer network. This\r\nallows researchers to store and share their publications, as well as the knowledge\r\nthey have gained during their research by attributing, linking and grouping the\r\npublications useful to other researchers in a similar area.\r\nLinkVis, the system I propose, uses methods from the \u001celd of visualization\r\nand peer-to-peer networking to provide a platform, which is not only capable of\r\nvisualizing and sharing this research knowledge, but also any other data, which\r\ncan be modeled as a network of interlinked nodes.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 1645, "image_height": 1250, "name": "ammer-2008-lst-image.jpg", "type": "image/jpeg", "size": 1295851, "path": "Publication:ammer-2008-lst", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/ammer-2008-lst/ammer-2008-lst-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/ammer-2008-lst/ammer-2008-lst-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 748 ], "supervisor": [ 166, 672 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 1645, "image_height": 1250, "name": "ammer-2008-lst-image.jpg", "type": "image/jpeg", "size": 1295851, "path": "Publication:ammer-2008-lst", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/ammer-2008-lst/ammer-2008-lst-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/ammer-2008-lst/ammer-2008-lst-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "ammer-2008-lst-paper.pdf", "type": "application/pdf", "size": 12293182, "path": "Publication:ammer-2008-lst", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/ammer-2008-lst/ammer-2008-lst-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/ammer-2008-lst/ammer-2008-lst-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/ammer-2008-lst/", "__class": "Publication" }, { "id": "TRA08", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "The Harris Matrix Composer - A New Tool to Manage Archaeological Stratigraphy", "date": "2008-10", "abstract": "The Harris Matrix - formulated by Dr. Edward C. Harris in 1973 - is the established way of representing the archaeological stratigraphy of an excavation. The Harris Matrix is a sequential diagram defining relations between stratigraphic units. It is an important method to document the stratification that is destroyed by the excavation process and hence a vital tool for analysis. Although the Harris Matrix has become a quasi standard of archaeological stratigraphy, only a few software tools exist to create and edit these diagrams. An evaluation of these tools showed that they do not completely comply with the theory or suffer from poor usability. Therefore we decided to develop a new application, called Harris Matrix Composer (HMC). Dr. Harris was involved in the evaluation of early prototypes to guarantee compliance with his theory. User tests were undertaken to address usability problems. The HMC provides a graph editor with an intuitive graphical user interface for editing a Harris Matrix throughout the entire excavation process. It supports valid Harris Matrix creation and indicates invalid units and relations. The theory has been extended to allow for temporal relations as well. Furthermore units can be grouped into structural entities called phases and into periods, assigning them to a historical epoch. A powerful interface to the GIS system ArcGIS will be developed to access layers for visualization and analysis by selecting units of the Harris Matrix. In this way the HMC becomes also a unique tool for the management and retrieval of digital archaeological data.", "authors_et_al": false, "substitute": null, "main_image": { "description": "HMC Screenshot", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1200, "image_height": 900, "name": "TRA08-image.jpg", "type": "image/jpeg", "size": 573371, "path": "Publication:TRA08", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TRA08/TRA08-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/TRA08/TRA08-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 237, 480 ], "booktitle": "Digital Heritage, Proceedings of the 14th International Conference on Virtual Systems and Multimedia", "date_from": "2008-10-20", "date_to": "2008-10-25", "editor": "M. Ioannides, A. Addison, A. Georgopoulos, L. Kalisperis", "isbn": "978-963-9911-00-0", "lecturer": [ 237 ], "location": "Limassol, Cyprus", "organization": "VSMM Commitee", "pages_from": "13", "pages_to": "20", "research_areas": [], "keywords": [ "Harris Matrix", "Excavation Management and Analysis", "Archaeological Stratigraphy" ], "weblinks": [], "files": [ { "description": "HMC Screenshot", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1200, "image_height": 900, "name": "TRA08-image.jpg", "type": "image/jpeg", "size": 573371, "path": "Publication:TRA08", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TRA08/TRA08-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/TRA08/TRA08-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "TRA08-paper.pdf", "type": "application/pdf", "size": 2021099, "path": "Publication:TRA08", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TRA08/TRA08-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/TRA08/TRA08-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "LEOPOLD" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TRA08/", "__class": "Publication" }, { "id": "patel-2008-tsa", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "The Seismic Analyzer - Interpreting and Illustrating 2D Seismic Data", "date": "2008-10", "abstract": "", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 1044, "image_height": 531, "name": "patel-2008-tsa-image.jpg", "type": "image/jpeg", "size": 307160, "path": "Publication:patel-2008-tsa", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/patel-2008-tsa/patel-2008-tsa-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/patel-2008-tsa/patel-2008-tsa-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 616, 668, 669, 727, 166 ], "date_from": "2008-10-19", "date_to": "2008-10-24", "event": "IEEE Visualization conference", "journal": "IEEE Transaction on Visualization and Computer Graphics", "lecturer": [ 616 ], "location": "Columbus, USA", "number": "6", "pages_from": "1571", "pages_to": "1578", "volume": "14", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "Film clip", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 640, "preview_image_height": 564, "name": "patel-2008-tsa-Film clip.avi", "type": "video/x-msvideo", "size": 17398734, "path": 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"https://www.cg.tuwien.ac.at/research/publications/2008/patel-2008-tsa/patel-2008-tsa-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "patel-2008-tsa-paper.pdf", "type": "application/pdf", "size": 21535845, "path": "Publication:patel-2008-tsa", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/patel-2008-tsa/patel-2008-tsa-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/patel-2008-tsa/patel-2008-tsa-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/patel-2008-tsa/", "__class": "Publication" }, { "id": "balabanian-2008-hvv", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Hierarchical Volume Visualization of Brain Anatomy", "date": "2008-10", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 508, "image_height": 498, "name": "balabanian-2008-hvv-image.jpg", "type": "image/jpeg", "size": 133084, "path": "Publication:balabanian-2008-hvv", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/balabanian-2008-hvv/balabanian-2008-hvv-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/balabanian-2008-hvv/balabanian-2008-hvv-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 673, 749, 171, 750, 176, 166 ], "booktitle": "VMV 2008, Vision, Modeling and Visualization", "date_from": "2008-10-08", "date_to": "2008-10-10", "editor": "Oliver Deussen, Daniel Keim, Dietmar Saupe", "isbn": "978-3-89838-609-8", "lecturer": [ 673 ], "location": "Konstanz, Deutschland", "pages_from": "313", "pages_to": "322", "research_areas": [ "MedVis" ], "keywords": [], "weblinks": [], "files": [ { "description": null, "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 508, "image_height": 498, "name": "balabanian-2008-hvv-image.jpg", "type": "image/jpeg", "size": 133084, "path": "Publication:balabanian-2008-hvv", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/balabanian-2008-hvv/balabanian-2008-hvv-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/balabanian-2008-hvv/balabanian-2008-hvv-image:thumb{{size}}.png" }, { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "balabanian-2008-hvv-paper.pdf", "type": "application/pdf", "size": 8581321, "path": "Publication:balabanian-2008-hvv", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/balabanian-2008-hvv/balabanian-2008-hvv-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/balabanian-2008-hvv/balabanian-2008-hvv-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/balabanian-2008-hvv/", "__class": "Publication" }, { "id": "guerrero-2008-sli", "type_id": "journalpaper_notalk", "tu_id": null, "repositum_id": null, "title": "Real-time Indirect Illumination and Soft Shadows in Dynamic Scenes Using Spherical Lights", "date": "2008-10", "abstract": "We present a method for rendering approximate soft shadows and diffuse indirect illumination in dynamic scenes.\nThe proposed method approximates the original scene geometry with a set of tightly fitting spheres. In previous\nwork, such spheres have been used to dynamically evaluate the visibility function to render soft shadows. In this\npaper, each sphere also acts as a low-frequency secondary light source, thereby providing diffuse one-bounce\nindirect illumination. The method is completely dynamic and proceeds in two passes: In a first pass, the light\nintensity distribution on each sphere is updated based on sample points on the corresponding object surface and\nconverted into the spherical harmonics basis. In a second pass, this radiance information and the visibility are\naccumulated to shade final image pixels. The sphere approximation allows us to compute visibility and diffuse\nreflections of an object at interactive frame rates of over 20 fps for moderately complex scenes.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 800, "image_height": 600, "name": "guerrero-2008-sli-.jpg", "type": "image/jpeg", "size": 135362, "path": "Publication:guerrero-2008-sli", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/guerrero-2008-sli/guerrero-2008-sli-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/guerrero-2008-sli/guerrero-2008-sli-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 627, 356, 193 ], "journal": "Computer Graphics Forum", "number": "8", "pages_from": "2154", "pages_to": "2168", "volume": "27", "research_areas": [ "Rendering" ], "keywords": [ "global illumination", "precomputed radiance transfer", "soft shadows" ], "weblinks": [], "files": [ { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 800, "image_height": 600, "name": "guerrero-2008-sli-.jpg", "type": "image/jpeg", "size": 135362, "path": "Publication:guerrero-2008-sli", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/guerrero-2008-sli/guerrero-2008-sli-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/guerrero-2008-sli/guerrero-2008-sli-:thumb{{size}}.png" }, { "description": "Pre-print of the full journal paper.", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "guerrero-2008-sli-paper.pdf", "type": "application/pdf", "size": 17256545, "path": "Publication:guerrero-2008-sli", "url": 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"thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/suntinger-2008-etet/suntinger-2008-etet-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "suntinger-2008-etet-paper.pdf", "type": "application/pdf", "size": 3864934, "path": "Publication:suntinger-2008-etet", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/suntinger-2008-etet/suntinger-2008-etet-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/suntinger-2008-etet/suntinger-2008-etet-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/suntinger-2008-etet/", "__class": "Publication" }, { "id": "gavrilescu-2008-vsc", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Visualization of Segmented Cine Data ", "date": "2008-09", "abstract": "This paper and its accompanying application address several methods for visualizing previously segmented Magnetic Resonance Imaging (MRI) heart data. Several parameters are computed from this data, which are then represented in a properly constructed 3D environment. \r\nThe heart data is structured into a series of datasets, each corresponding to a phase in the time-span of a heartbeat, and each consisting of several slices through the cross-section of the heart. These datasets are segmented semi-automatically, to outline the inner and outer layers of the myocardium (the endocardium and the epicardium, respectively), and the resulting contours are then used to construct a 3D mesh which closely approximate the walls of the myocardium. Five parameters are then derived from the data, namely wall thickness, wall thickening, motion speed, distance from the center and moment of maximum thickness. The values of these parameters are represented comparatively on the surface of the previously constructed mesh, though use of color or graphical noise, rendering visible any anomalies which might indicate possible problems with the proper functioning of the heart.\r\nOne of the focal issues is the visualization of two or more parameters concurrently, on the same surface, in real-time, without visually overloading the representation. This is achieved through various techniques such as the use of noise textures, a lens tool, or fading in-out between two different parameters.\r\nData containing a number of distinct stress levels is also visualized. In addition to the previous techniques, it is possible to represent parameters for all stress levels on a single mesh, through the use of “stress bands”. Moreover, the mesh be clipped above a desired stress band, thus viewing the parameter in relation to the motion of the heart. \r\nThese means of visually characterizing the behavior of the heart in motion, specifically, the left ventricle, yield satisfactory results, making it possible to detect anomalies and dyssynchronies among the various regions of the myocardium, which are typically indicators of heart-related disease. ", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 288, "image_height": 276, "name": "gavrilescu-2008-vsc-image.jpg", "type": "image/jpeg", "size": 55524, "path": "Publication:gavrilescu-2008-vsc", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/gavrilescu-2008-vsc/gavrilescu-2008-vsc-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/gavrilescu-2008-vsc/gavrilescu-2008-vsc-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 737 ], "diploma_examina": "2008-09", "supervisor": [ 850, 166, 606 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 288, "image_height": 276, "name": "gavrilescu-2008-vsc-image.jpg", "type": "image/jpeg", "size": 55524, "path": "Publication:gavrilescu-2008-vsc", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/gavrilescu-2008-vsc/gavrilescu-2008-vsc-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/gavrilescu-2008-vsc/gavrilescu-2008-vsc-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "gavrilescu-2008-vsc-paper.pdf", "type": "application/pdf", "size": 1044751, "path": "Publication:gavrilescu-2008-vsc", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/gavrilescu-2008-vsc/gavrilescu-2008-vsc-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/gavrilescu-2008-vsc/gavrilescu-2008-vsc-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/gavrilescu-2008-vsc/", "__class": "Publication" }, { "id": "TR-186-2-08-09", "type_id": "techreport", "tu_id": null, "repositum_id": null, "title": "Pixel Accurate Shadows with Shadow Mapping", "date": "2008-09", "abstract": "High quality shadows generated by shadow mapping is still an\nextensive problem in realtime rendering. This work summarizes\nsome state-of-the-art techniques to achieve pixel accurate shadows\nand points out the various problems of generating artifact free\nshadows. Further a demo application has been implemented to\ncompare the different techniques and experiment with alternative\napproaches.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "pplant", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1280, "image_height": 1024, "name": "TR-186-2-08-09-pplant.png", "type": "image/png", "size": 1240215, "path": "Publication:TR-186-2-08-09", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-09/TR-186-2-08-09-pplant.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-09/TR-186-2-08-09-pplant:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 659 ], "number": "TR-186-2-08-09", "research_areas": [ "Rendering" ], "keywords": [ "Shadow Mapping", "Deferred shading", "Pixel Accurate Shadows", "Real time rendering" ], "weblinks": [], "files": [ { "description": "http://stud4.tuwien.ac.at/~e0525392/shadow/shadow.html", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "TR-186-2-08-09-paper.pdf", "type": "application/pdf", "size": 5631966, "path": "Publication:TR-186-2-08-09", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-09/TR-186-2-08-09-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-09/TR-186-2-08-09-paper:thumb{{size}}.png" }, { "description": null, "filetitle": "pplant", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1280, "image_height": 1024, "name": "TR-186-2-08-09-pplant.png", "type": "image/png", "size": 1240215, "path": "Publication:TR-186-2-08-09", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-09/TR-186-2-08-09-pplant.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-09/TR-186-2-08-09-pplant:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-09/", "__class": "Publication" }, { "id": "SUNDSTEDT-2008-ASF", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "A Psychophysical Study of Fixation Behavior in a Computer Game", "date": "2008-08", "abstract": "Prediction of gaze behavior in gaming environments can be a tremendously useful asset to game designers, enabling them to improve gameplay, selectively increase visual fidelity, and optimize the distribution of computing resources. The use of saliency maps is currently being advocated as the method of choice for predicting visual attention, crucially under the assumption that no specific task is present. This is achieved by analyzing images for low-level features such as motion, contrast, luminance, etc. However, the majority of computer games are designed to be easily understood and pose a task readily apparent to most players. Our psychophysical experiment shows that in a task-oriented context such as gaming, the predictive power of saliency maps at design time can be weak. Thus, we argue that a more involved protocol utilizing eye tracking, as part of the computer game design cycle, can be sufficiently robust to succeed in predicting fixation behavior of players.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "thumbnail", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1450, "image_height": 536, "name": "SUNDSTEDT-2008-ASF-thumbnail.png", "type": "image/png", "size": 374956, "path": "Publication:SUNDSTEDT-2008-ASF", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/SUNDSTEDT-2008-ASF/SUNDSTEDT-2008-ASF-thumbnail.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/SUNDSTEDT-2008-ASF/SUNDSTEDT-2008-ASF-thumbnail:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 730, 731, 193, 732 ], "booktitle": "ACM Symposium on Applied Perception in Graphics and Visualization 2008", "date_from": "2008-08-09", "date_to": "2008-08-10", "doi": "10.1145/1394281.1394288", "editor": "Sarah Creem-Regehr and Karol Myszkowski", "isbn": "978-1-59593-981-4", "lecturer": [ 730 ], "location": "Los Angeles, California", "pages_from": "43", "pages_to": "50", "publisher": "ACM", "research_areas": [], "keywords": [ "saliency", "eye tracking", "electronic games", "visual attention", "psychophysics" ], "weblinks": [], "files": [ { "description": null, "filetitle": "draft", "main_file": true, "use_in_gallery": false, "access": "public", "name": "SUNDSTEDT-2008-ASF-draft.pdf", "type": "application/pdf", "size": 5044193, "path": "Publication:SUNDSTEDT-2008-ASF", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/SUNDSTEDT-2008-ASF/SUNDSTEDT-2008-ASF-draft.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/SUNDSTEDT-2008-ASF/SUNDSTEDT-2008-ASF-draft:thumb{{size}}.png" }, { "description": null, "filetitle": "thumbnail", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1450, "image_height": 536, "name": "SUNDSTEDT-2008-ASF-thumbnail.png", "type": "image/png", "size": 374956, "path": "Publication:SUNDSTEDT-2008-ASF", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/SUNDSTEDT-2008-ASF/SUNDSTEDT-2008-ASF-thumbnail.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/SUNDSTEDT-2008-ASF/SUNDSTEDT-2008-ASF-thumbnail:thumb{{size}}.png" } ], "projects_workgroups": [ "CROSSMOD" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/SUNDSTEDT-2008-ASF/", "__class": "Publication" }, { "id": "LIPP-2008-IEV", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Interactive Visual Editing of Grammars for Procedural Architecture", "date": "2008-08", "abstract": "We introduce a real-time interactive visual editing paradigm for\nshape grammars, allowing the creation of rulebases from scratch\nwithout text file editing. In previous work, shape-grammar based\nprocedural techniques were successfully applied to the creation of\narchitectural models. However, those methods are text based, and\nmay therefore be difficult to use for artists with little computer science\nbackground. Therefore the goal was to enable a visual workflow\ncombining the power of shape grammars with traditional modeling\ntechniques. We extend previous shape grammar approaches\nby providing direct and persistent local control over the generated\ninstances, avoiding the combinatorial explosion of grammar rules\nfor modifications that should not affect all instances. The resulting\nvisual editor is flexible: All elements of a complex state-of-the-art\ngrammar can be created and modified visually.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 553, "image_height": 628, "name": "LIPP-2008-IEV-.jpg", "type": "image/jpeg", "size": 75689, "path": "Publication:LIPP-2008-IEV", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/LIPP-2008-IEV/LIPP-2008-IEV-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/LIPP-2008-IEV/LIPP-2008-IEV-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 680, 194, 193 ], "date_from": "2008-08-11", "date_to": "2008-08-15", "doi": "10.1145/1360612.1360701", "event": "ACM SIGGRAPH 2008", "issn": "0730-0301", "journal": "ACM Transactions on Graphics", "lecturer": [ 680 ], "location": "Los Angeles, CA", "note": "Article No. 102", "number": "3", "pages_from": "102:1", "pages_to": "10", "volume": "27", "research_areas": [ "Modeling" ], "keywords": [ "procedural modeling", "shape grammars", "architectural modeling" ], "weblinks": [], "files": [ { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 553, "image_height": 628, "name": "LIPP-2008-IEV-.jpg", "type": "image/jpeg", "size": 75689, "path": "Publication:LIPP-2008-IEV", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/LIPP-2008-IEV/LIPP-2008-IEV-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/LIPP-2008-IEV/LIPP-2008-IEV-:thumb{{size}}.png" }, { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "LIPP-2008-IEV-paper.pdf", "type": "application/pdf", "size": 4367611, "path": "Publication:LIPP-2008-IEV", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/LIPP-2008-IEV/LIPP-2008-IEV-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/LIPP-2008-IEV/LIPP-2008-IEV-paper:thumb{{size}}.png" }, { "description": "Supplemental Video", "filetitle": "video", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 960, "preview_image_height": 720, "name": "LIPP-2008-IEV-video.avi", "type": "video/x-msvideo", "size": 50682588, "path": "Publication:LIPP-2008-IEV", "preview_name": "LIPP-2008-IEV-video:preview.png", "preview_type": "image/jpeg", "preview_size": 27804, "url": "https://www.cg.tuwien.ac.at/research/publications/2008/LIPP-2008-IEV/LIPP-2008-IEV-video.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/LIPP-2008-IEV/LIPP-2008-IEV-video:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2008/LIPP-2008-IEV/LIPP-2008-IEV-video:video.mp4" } ], "projects_workgroups": [ "GAMEWORLD" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/LIPP-2008-IEV/", "__class": "Publication" }, { "id": "Kim-2008_FWIP", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Finger Walking in Place (FWIP): a Traveling Technique in Virtual Environments", "date": "2008-08", "abstract": "In this paper we present a Finger Walking in Place (FWIP)\r\ninteraction technique that allows a user to travel in a virtual world as\r\nher/his bare ¯ngers slide on a multi-touch sensitive surface. Traveling is\r\nbasically realized by translating and rotating the user's viewpoint in the\r\nvirtual world. The user can translate and rotate a viewpoint by mov-\r\ning her/his ¯ngers in place. Currently, our FWIP technique can be used\r\nto navigate in a plane but it can be extended to navigate in the third\r\naxis, so that the user can move to any direction in a 3D virtual world.\r\nSince our FWIP technique only uses bare ¯ngers and a multi-touch de-\r\nvice, ¯nger motions are not precisely detected, especially compared with\r\nthe use of data gloves or similar sensing devices. However, our experi-\r\nments show that FWIP can be used as a novel traveling technique even\r\nwithout accurate motion detection. Our experiment tasks include ¯nding\r\nand reaching the target(s) with FWIP, and the participants successfully\r\ncompleted the tasks. The experiments illustrate our e®orts to make the\r\nFWIP technique robust as a scaled-down walking-in-place locomotion\r\ntechnique, so that it can be used as a reliable traveling technique.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 270, "image_height": 135, "name": "Kim-2008_FWIP-.jpg", "type": "image/jpeg", "size": 11617, "path": "Publication:Kim-2008_FWIP", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Kim-2008_FWIP/Kim-2008_FWIP-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Kim-2008_FWIP/Kim-2008_FWIP-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 624, 581, 235, 759 ], "booktitle": "Proceedings of SmartGraphics 2008, Springer LNCS 5166/2008", "isbn": "978-3-540-85410-4", "issn": "0302-9743 (Print) 1611-3349 (Online)", "lecturer": [ 235 ], "location": "Rennes, France", "publisher": "Springer", "series": "LNCS", "research_areas": [], "keywords": [ "Virtual environments", "Finger-walking", "Navigation", "Traveling techniques", "Multi-touch device" ], "weblinks": [], "files": [ { "description": "", "filetitle": "", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 270, "image_height": 135, "name": "Kim-2008_FWIP-.jpg", "type": "image/jpeg", "size": 11617, "path": "Publication:Kim-2008_FWIP", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Kim-2008_FWIP/Kim-2008_FWIP-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Kim-2008_FWIP/Kim-2008_FWIP-:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": false, "use_in_gallery": false, "access": "public", "name": "Kim-2008_FWIP-paper.pdf", "type": "application/pdf", "size": 640018, "path": "Publication:Kim-2008_FWIP", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Kim-2008_FWIP/Kim-2008_FWIP-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Kim-2008_FWIP/Kim-2008_FWIP-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "VRVis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Kim-2008_FWIP/", "__class": "Publication" }, { "id": "Matkovic-2008-ComVis", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "ComVis: a Coordinated Multiple Views System for Prototyping New Visualization Technology", "date": "2008-07", "abstract": "There is a large number of interactive visualization\r\ntools, however no universal tool exists that covers all relevant\r\naspects for all possible application domains. We have\r\ndeveloped a tool, ComVIs, which was intended to be used\r\nas a research prototype for new visualization techniques.\r\nWe have identified some interesting aspects from developers\r\nand users point of view during tool development. In this\r\npaper we describe lessons learned during the process, and\r\nshare our findings with visualization research community.\r\nExamples at the end prove the usefulness of the developed\r\ntool. One particular example, the concept of families of\r\nfunction graphs and application to analysis of fuel injection\r\nconcludes the paper.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 1556, "image_height": 909, "name": "Matkovic-2008-ComVis-image.jpg", "type": "image/jpeg", "size": 196957, "path": "Publication:Matkovic-2008-ComVis", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Matkovic-2008-ComVis/Matkovic-2008-ComVis-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Matkovic-2008-ComVis/Matkovic-2008-ComVis-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 235, 758, 581, 176 ], "booktitle": "Proceedings of the 12th International Conference Information Visualisation", "lecturer": [ 235 ], "location": "London, UK", "research_areas": [], "keywords": [ "visualization tool", "visual analysis", "information visualization", "system design" ], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 1556, "image_height": 909, "name": "Matkovic-2008-ComVis-image.jpg", "type": "image/jpeg", "size": 196957, "path": "Publication:Matkovic-2008-ComVis", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Matkovic-2008-ComVis/Matkovic-2008-ComVis-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Matkovic-2008-ComVis/Matkovic-2008-ComVis-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": false, "use_in_gallery": false, "access": "public", "name": "Matkovic-2008-ComVis-paper.pdf", "type": "application/pdf", "size": 963091, "path": "Publication:Matkovic-2008-ComVis", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Matkovic-2008-ComVis/Matkovic-2008-ComVis-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Matkovic-2008-ComVis/Matkovic-2008-ComVis-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "VRVis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Matkovic-2008-ComVis/", "__class": "Publication" }, { "id": "vucini_2008_rnp", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Efficient Reconstruction from Non-uniform Point Sets", "date": "2008-07", "abstract": "We propose a method for non-uniform reconstruction of 3D scalar data. Typically, radial basis functions, trigonometric polynomials or shift-invariant functions are used in the functional approximation of 3D data. We adopt a variational approach for the reconstruction and rendering of 3D data. The principle idea is based on data fitting via thin-plate splines. An approximation by B-splines offers more compact support for fast reconstruction. We adopt this method for large datasets by introducing a block-based reconstruction approach. This makes the method practical for large data sets. Our reconstruction will be smooth across blocks. We give reconstruction measurements as error estimations based on different parameter settings and also an insight on the computational effort. We show that the block size used in reconstruction has a negligible effect on the reconstruction error. Finally we show rendering results to emphasize the quality of this 3D reconstruction technique.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 827, "image_height": 556, "name": "vucini_2008_rnp-image.jpg", "type": "image/jpeg", "size": 68696, "path": "Publication:vucini_2008_rnp", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/vucini_2008_rnp/vucini_2008_rnp-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/vucini_2008_rnp/vucini_2008_rnp-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 636, 196, 166 ], "date_from": "2008-06-09", "date_to": "2008-06-11", "event": "Computer Graphics International 2008", "issn": "0178-2789 (Print) 1432-2315 (Online)", "journal": "The Visual Computer", "lecturer": [ 636 ], "location": "Istanbul, Turkey", "note": "http://www.springerlink.com/content/r8578865643x0061/", "number": "7-9", "pages_from": "555", "pages_to": "563", "volume": "24", "research_areas": [], "keywords": [ "3D Object Modeling", "Non-uniform Reconstruction", "Variational Approximation", "B-splines" ], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 827, "image_height": 556, "name": "vucini_2008_rnp-image.jpg", "type": "image/jpeg", "size": 68696, "path": "Publication:vucini_2008_rnp", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/vucini_2008_rnp/vucini_2008_rnp-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/vucini_2008_rnp/vucini_2008_rnp-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "vucini_2008_rnp-paper.pdf", "type": "application/pdf", "size": 14669433, "path": "Publication:vucini_2008_rnp", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/vucini_2008_rnp/vucini_2008_rnp-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/vucini_2008_rnp/vucini_2008_rnp-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "PVG" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/vucini_2008_rnp/", "__class": "Publication" }, { "id": "monitzer_2008_FluSi", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Fluid Simulation on the GPU with Complex Obstacles Using the Lattice Boltzmann Method", "date": "2008-07", "abstract": "Real-time computer graphics and simulation has advanced to a level of realism that was regarded as\r\nunthinkable a few decades ago. However, \r\nuid simulations are still in an infant state for applications that\r\nrequire interactivity. Recent developments in programmability of graphics processing units on current\r\ngraphics cards have enabled researchers to treat these cards as stream co-processors. This class of\r\nprocessors are designed for parallelizable algorithms that do not make heavy use of branching. Algorithms\r\nhaving these properties can be accelerated signi\fcantly compared to implementations on current central\r\nprocessing units. Since grid-based \r\nuid simulations \ft perfectly into this scheme, this has become a\r\nhot topic in research. Various approaches will be presented in order to determine a combination of\r\nalgorithms that can easily be parallelized and allow integrating rigid objects with complex boundaries into\r\na \r\nuid simulation at interactive rates. Additionally, the usage of \r\nuid simulations in computer games will\r\nbe discussed. An underwater pinball game will be introduced as a practical example, highlighting the\r\nconsiderations that have to be taken into account when adding this game element that was previously\r\nimpossible to use.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 1748, "image_height": 1347, "name": "monitzer_2008_FluSi-image.jpg", "type": "image/jpeg", "size": 763598, "path": "Publication:monitzer_2008_FluSi", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/monitzer_2008_FluSi/monitzer_2008_FluSi-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/monitzer_2008_FluSi/monitzer_2008_FluSi-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 735 ], "diploma_examina": "2008-07-17", "supervisor": [ 166, 672 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 1748, "image_height": 1347, "name": "monitzer_2008_FluSi-image.jpg", "type": "image/jpeg", "size": 763598, "path": "Publication:monitzer_2008_FluSi", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/monitzer_2008_FluSi/monitzer_2008_FluSi-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/monitzer_2008_FluSi/monitzer_2008_FluSi-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "monitzer_2008_FluSi-paper.pdf", "type": "application/pdf", "size": 10790689, "path": "Publication:monitzer_2008_FluSi", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/monitzer_2008_FluSi/monitzer_2008_FluSi-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/monitzer_2008_FluSi/monitzer_2008_FluSi-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/monitzer_2008_FluSi/", "__class": "Publication" }, { "id": "CHIU-2008-PEN", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Penta G - A Game Engine for Real-Time Rendering Research", "date": "2008-06", "abstract": "Scientifc research often necessitates the usage of middleware for proof-of-concept implementations. In computer graphics, rendering engines are a type of middleware used for such a purpose. For real-time rendering, however, rendering engines often do not provide all functionality that is required, as in real-time, a certain degree of user interactivity aside from graphics is necessary, or can be the center of research. Furthermore, some modern research also explores interactivity with non-visual perceptual channels such as audio. Full game engines provide that functionality, however most state-of- the-art game engines are only available through expensive or exclusive licenses, or are completely unavailable for scientifc research.\r\n\r\nThis thesis presents the design, implementation and adaptation process of a state-of-the-art game engine that was tailored specifcally for research purposes. This game engine includes all the necessary components to build real-time-interactive computer graphics applications and has been used in several research projects such as the EU GameTools Project and the EU Crossmod Project.\r\n", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "thumbnail", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1024, "image_height": 768, "name": "CHIU-2008-PEN-thumbnail.bmp", "type": "image/x-ms-bmp", "size": 2359350, "path": "Publication:CHIU-2008-PEN", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/CHIU-2008-PEN/CHIU-2008-PEN-thumbnail.bmp", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/CHIU-2008-PEN/CHIU-2008-PEN-thumbnail:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 733 ], "diploma_examina": "2008-06-10", "supervisor": [ 193 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "CHIU-2008-PEN-thesis.pdf", "type": "application/pdf", "size": 19729894, "path": "Publication:CHIU-2008-PEN", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/CHIU-2008-PEN/CHIU-2008-PEN-thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/CHIU-2008-PEN/CHIU-2008-PEN-thesis:thumb{{size}}.png" }, { "description": "", "filetitle": "thumbnail", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1024, "image_height": 768, "name": "CHIU-2008-PEN-thumbnail.bmp", "type": "image/x-ms-bmp", "size": 2359350, "path": "Publication:CHIU-2008-PEN", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/CHIU-2008-PEN/CHIU-2008-PEN-thumbnail.bmp", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/CHIU-2008-PEN/CHIU-2008-PEN-thumbnail:thumb{{size}}.png" } ], "projects_workgroups": [ "GameTools" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/CHIU-2008-PEN/", "__class": "Publication" }, { "id": "SCHERZER-2008-FSR", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Frame Sequential Interpolation for Discrete Level-of-Detail Rendering", "date": "2008-06", "abstract": "In this paper we present a method for automatic interpolation between adjacent discrete levels of detail to achieve smooth LOD changes in image space. We achieve this by breaking the problem into two passes: We render the two LOD levels individually and combine them in a separate pass afterwards. The interpolation is formulated in a way that only one level has to be updated per frame and the other can be reused from the previous frame, thereby causing roughly the same render cost as with simple non interpolated discrete LOD rendering, only incurring the slight overhead of the final combination pass. Additionally we describe customized interpolation schemes using visibility textures.\n\nThe method was designed with the ease of integration into existing engines in mind. It requires neither sorting nor blending of objects, nor does it introduce any constrains in the LOD used. The LODs can be coplanar, alpha masked, animated, impostors, and intersecting, while still interpolating smoothly.\n\n", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "thumbnail", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1311, "image_height": 804, "name": "SCHERZER-2008-FSR-thumbnail.png", "type": "image/png", "size": 750809, "path": "Publication:SCHERZER-2008-FSR", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/SCHERZER-2008-FSR/SCHERZER-2008-FSR-thumbnail.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/SCHERZER-2008-FSR/SCHERZER-2008-FSR-thumbnail:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 452, 193 ], "date_from": "2008-06-23", "date_to": "2008-06-25", "event": "Eurographics Symposium on Rendering 2008", "issn": "0167-7055", "journal": "Computer Graphics Forum (Proceedings EGSR 2008)", "lecturer": [ 452 ], "location": "Sarajevo, Bosnia-Herzegovina", "number": "4", "pages_from": "1175", "pages_to": "1181", "volume": "27", "research_areas": [ "Rendering" ], "keywords": [ "LOD blending", "real-time rendering", "levels of detail" ], "weblinks": [], "files": [ { "description": null, "filetitle": "draft", "main_file": true, "use_in_gallery": false, "access": "public", "name": "SCHERZER-2008-FSR-draft.pdf", "type": "application/pdf", "size": 12907147, "path": "Publication:SCHERZER-2008-FSR", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/SCHERZER-2008-FSR/SCHERZER-2008-FSR-draft.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/SCHERZER-2008-FSR/SCHERZER-2008-FSR-draft:thumb{{size}}.png" }, { "description": null, "filetitle": "thumbnail", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1311, "image_height": 804, "name": "SCHERZER-2008-FSR-thumbnail.png", "type": "image/png", "size": 750809, "path": "Publication:SCHERZER-2008-FSR", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/SCHERZER-2008-FSR/SCHERZER-2008-FSR-thumbnail.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/SCHERZER-2008-FSR/SCHERZER-2008-FSR-thumbnail:thumb{{size}}.png" }, { "description": null, "filetitle": "video", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 768, "preview_image_height": 576, "name": "SCHERZER-2008-FSR-video.avi", "type": "video/x-msvideo", "size": 46305280, "path": "Publication:SCHERZER-2008-FSR", "preview_name": "SCHERZER-2008-FSR-video:preview.png", "preview_type": "image/jpeg", "preview_size": 81994, "url": "https://www.cg.tuwien.ac.at/research/publications/2008/SCHERZER-2008-FSR/SCHERZER-2008-FSR-video.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/SCHERZER-2008-FSR/SCHERZER-2008-FSR-video:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2008/SCHERZER-2008-FSR/SCHERZER-2008-FSR-video:video.mp4" } ], "projects_workgroups": [ "CROSSMOD" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/SCHERZER-2008-FSR/", "__class": "Publication" }, { "id": "SATZER-2008", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Console Engine Design on the Example of the PlayStation 2 in Comparison to the PC", "date": "2008-06", "abstract": "3D Graphics are an important part of a lot of software nowadays, ranging from games to\r\nmedical or architectural visualization. Especially games drive the development of more and\r\nmore powerful graphic cards and consoles. The graphics engine is the component of the\r\nsoftware responsible for visual presentation. On consoles the hardware layout is di\u000berent to\r\nthat of a standard PC, thus making it interesting to adapt and optimize a rendering engine\r\nfor a speci\fc hardware con\fguration. The multi-processor technology of the PlayStation\r\n2 with its extensive parallelism is optimal to show the di\u000berences between platforms with\r\na rendering engine prototype.\r\nTo get basic knowledge, an overview of the hardware along with design strategies is given.\r\nThe main di\u000berence to a PC engine is the non-existence of a graphics API like OpenGL\r\nor DirectX. Because of the \fxed hardware layout it is possible to design the engine to \ft\r\nperfectly to the available hardware and optimize it accordingly without any need for compatibility\r\nto di\u000berent hardware settings. To get acceptable performance on the PlayStation\r\n2, various bu\u000bering schemes, as well as the use of the di\u000berent available processing units\r\nare explained and incorporated in the engine design. The PlayStation 2 o\u000bers parallelism\r\nin the rasterizer, which creates the need for synchronization. To achieve this, two di\u000berent\r\ntechniques are explained and a CPU-independent synchronization using the DMA controller\r\nis implemented. The main part of the thesis is the direct comparison between an\r\nengine design for the PlayStation 2 and the PC. This is especially shown on various small\r\ne\u000bects, like motion blur or glow, implemented on the PlayStation 2, exploiting specialized\r\nfeatures available only on this platform, and the PC.\r\nThe engine prototype includes a toolchain for models and textures into a PlayStation 2\r\noptimized format for fast usage. It uses the available Vector Units to shift processing load\r\nfrom the CPU to the other components and makes excessive usage of DMA transfer to\r\nget parallel upload of textures and other data. Various special e\u000bects were implemented to\r\nhelp to point out the di\u000berences between conventional PC hardware and the PlayStation\r\n2.\r\nSumming up, this thesis proposes an engine design for the PlayStation 2 using various\r\nfeatures of this hardware and comparing its possibilities with those of conventional PC\r\nhardware. The thesis is divided into a basic overview of the rendering steps and the hardware\r\nof the PlayStation 2. This is followed by a detailed layout of the design issues for the\r\nengine and a comparison to the PC.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 739 ], "supervisor": [ 193 ], "research_areas": [], "keywords": [ "real-time rendering", "game engines" ], "weblinks": [], "files": [], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/SATZER-2008/", "__class": "Publication" }, { "id": "balabanian-2008-tst", "type_id": "poster", "tu_id": null, "repositum_id": null, "title": "Temporal Styles for Time-Varying Volume Data", "date": "2008-06", "abstract": "This paper introduces interaction mechanisms for conveying\r\ntemporal characteristics of time-varying volume\r\ndata based on temporal styles. We demonstrate the flexibility\r\nof the new concept through different temporal style\r\ntransfer function types and we define a set of temporal compositors\r\nas operators on them. The data is rendered by a\r\nmulti-volume GPU raycaster that does not require any grid\r\nalignment over the individual time-steps of our data nor a\r\nrectilinear grid structure. The paper presents the applicability\r\nof the new concept on different data sets from partial\r\nto full voxel alignment with rectilinear and curvilinear grid\r\nlayout.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 3126, "image_height": 636, "name": "balabanian-2008-tst-image.jpg", "type": "image/jpeg", "size": 232966, "path": "Publication:balabanian-2008-tst", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/balabanian-2008-tst/balabanian-2008-tst-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/balabanian-2008-tst/balabanian-2008-tst-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 673, 171, 196, 166 ], "booktitle": "Proceedings of 3DPVT", "date_from": "2008-06-18", "date_to": "2008-06-20", "editor": "Stephan Gumhold, Jana Kosecka and Oliver Staadt", "lecturer": [ 673 ], "location": "Atlanta, Georgia, USA", "note": "POSTER PRESENTATION", "pages_from": "81", "pages_to": "89", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 3126, "image_height": 636, "name": "balabanian-2008-tst-image.jpg", "type": "image/jpeg", "size": 232966, "path": "Publication:balabanian-2008-tst", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/balabanian-2008-tst/balabanian-2008-tst-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/balabanian-2008-tst/balabanian-2008-tst-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "balabanian-2008-tst-paper.pdf", "type": "application/pdf", "size": 1685798, "path": "Publication:balabanian-2008-tst", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/balabanian-2008-tst/balabanian-2008-tst-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/balabanian-2008-tst/balabanian-2008-tst-paper:thumb{{size}}.png" } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/balabanian-2008-tst/", "__class": "Publication" }, { "id": "CADIK-2008-EHD", "type_id": "journalpaper_notalk", "tu_id": null, "repositum_id": null, "title": "Evaluation of HDR Tone Mapping Methods Using Essential Perceptual Attributes", "date": "2008-06", "abstract": "The problem of reproducing high dynamic range images on devices with restricted dynamic range has gained a lot of interest in the computer graphics community. There exist various approaches to this issue, which span several research areas including computer graphics, image processing, color vision, physiological aspects, etc. These approaches assume a thorough knowledge of both the objective and subjective attributes of an image. However, no comprehensive overview and analysis of such attributes has been published so far.\n\nIn this contribution, we present an overview about the effects of basic image attributes in HDR tone mapping. Furthermore, we propose a scheme of relationships between these attributes, leading to the definition of an overall image quality measure. We present results of subjective psychophysical experiments that we have performed to prove the proposed relationship scheme. Moreover, we also present an evaluation of existing tone mapping methods (operators) with regard to these attributes. Finally, the execution of with-reference and without a real reference perceptual experiments gave us the opportunity to relate the obtained subjective results.\n\nOur effort is not just useful to get into the tone mapping field or when implementing a tone mapping method, but it also sets the stage for well-founded quality comparisons between tone mapping methods. By providing good definitions of the different attributes, user-driven or fully automatic comparisons are made possible.\n", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1600, "image_height": 1200, "name": "CADIK-2008-EHD-.bmp", "type": "image/x-ms-bmp", "size": 5760054, "path": "Publication:CADIK-2008-EHD", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/CADIK-2008-EHD/CADIK-2008-EHD-.bmp", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/CADIK-2008-EHD/CADIK-2008-EHD-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 635, 193, 177, 191 ], "issn": "0097-8493", "journal": "Computers & Graphics", "number": "3", "pages_from": "330", "pages_to": "349", "volume": "32", "research_areas": [ "Rendering" ], "keywords": [ "high dynamic range", "tone mapping operators", "tone mapping evaluation", "image attributes" ], "weblinks": [], "files": [ { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1600, "image_height": 1200, "name": "CADIK-2008-EHD-.bmp", "type": "image/x-ms-bmp", "size": 5760054, "path": "Publication:CADIK-2008-EHD", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/CADIK-2008-EHD/CADIK-2008-EHD-.bmp", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/CADIK-2008-EHD/CADIK-2008-EHD-:thumb{{size}}.png" }, { "description": null, "filetitle": "Preprint", "main_file": true, "use_in_gallery": false, "access": "public", "name": "CADIK-2008-EHD-Preprint.pdf", "type": "application/pdf", "size": 2159163, "path": "Publication:CADIK-2008-EHD", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/CADIK-2008-EHD/CADIK-2008-EHD-Preprint.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/CADIK-2008-EHD/CADIK-2008-EHD-Preprint:thumb{{size}}.png" } ], "projects_workgroups": [ "Treelumination" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/CADIK-2008-EHD/", "__class": "Publication" }, { "id": "Rautek-2008-IDS", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Interaction-Dependent Semantics for Illustrative Volume Rendering", "date": "2008-05", "abstract": "In traditional illustration the choice of appropriate styles and rendering techniques is guided by the intention of\nthe artist. For illustrative volume visualizations it is difficult to specify the mapping between the 3D data and the visual representation that preserves the intention of the user. The semantic layers concept establishes this mapping with a linguistic formulation of rules that directly map data features to rendering styles. With semantic layers fuzzy logic is used to evaluate the user defined illustration rules in a preprocessing step.\nIn this paper we introduce interaction-dependent rules that are evaluated for each frame and are therefore computationally more expensive. Enabling interaction-dependent rules, however, allows the use of a new class of semantics, resulting in more expressive interactive illustrations. We show that the evaluation of the fuzzy logic can be done on the graphics hardware enabling the efficient use of interaction-dependent semantics. Further\nwe introduce the flat rendering mode and discuss how different rendering parameters are influenced by the rule\nbase. Our approach provides high quality illustrative volume renderings at interactive frame rates, guided by the\nspecification of illustration rules.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 793, "image_height": 475, "name": "Rautek-2008-IDS-image.png", "type": "image/png", "size": 211033, "path": "Publication:Rautek-2008-IDS", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-IDS/Rautek-2008-IDS-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-IDS/Rautek-2008-IDS-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 488, 161, 166 ], "event": "Eurographics/ IEEE-VGTC Symposium on Visualization", "journal": "Computer Graphics Forum", "lecturer": [ 488 ], "location": "Eindhoven, The Netherlands", "number": "3", "pages_from": "847", "pages_to": "854", "volume": "27", "research_areas": [ "IllVis" ], "keywords": [], "weblinks": [], "files": [ { "description": null, "filetitle": "image-result", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 332, "image_height": 598, "name": "Rautek-2008-IDS-image-result.png", "type": "image/png", "size": 178836, "path": "Publication:Rautek-2008-IDS", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-IDS/Rautek-2008-IDS-image-result.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-IDS/Rautek-2008-IDS-image-result:thumb{{size}}.png" }, { "description": null, "filetitle": "image-result01", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 437, "image_height": 605, "name": "Rautek-2008-IDS-image-result01.png", "type": "image/png", "size": 180091, "path": "Publication:Rautek-2008-IDS", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-IDS/Rautek-2008-IDS-image-result01.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-IDS/Rautek-2008-IDS-image-result01:thumb{{size}}.png" }, { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 793, "image_height": 475, "name": "Rautek-2008-IDS-image.png", "type": "image/png", "size": 211033, "path": "Publication:Rautek-2008-IDS", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-IDS/Rautek-2008-IDS-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-IDS/Rautek-2008-IDS-image:thumb{{size}}.png" }, { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": true, "access": "public", "name": "Rautek-2008-IDS-paper.pdf", "type": "application/pdf", "size": 6701122, "path": "Publication:Rautek-2008-IDS", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-IDS/Rautek-2008-IDS-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-IDS/Rautek-2008-IDS-paper:thumb{{size}}.png" }, { "description": null, "filetitle": "video", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 768, "preview_image_height": 768, "name": "Rautek-2008-IDS-video.avi", "type": "video/x-msvideo", "size": 25194564, "path": "Publication:Rautek-2008-IDS", "preview_name": "Rautek-2008-IDS-video:preview.png", "preview_type": "image/jpeg", "preview_size": 18454, "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-IDS/Rautek-2008-IDS-video.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-IDS/Rautek-2008-IDS-video:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-IDS/Rautek-2008-IDS-video:video.mp4" } ], "projects_workgroups": [ "exvisation" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-IDS/", "__class": "Publication" }, { "id": "Trobec-2008-Heart", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Visual Analysis of Heart Reinervation after Transplantation", "date": "2008-05", "abstract": "During heart transplantation complete denervation\r\nof allograft occurs. Partial reinnervation may develop after one\r\nyear or later. It can be detected by different methods i.e., iodine-\r\n123-meta-iodobenziylguanidine (MIBG) scintigraphy, positron\r\nemission tomography (PET), heart rate variability (HRV), etc.\r\nWe propose an alternative noninvasive method based on visual\r\ndiagnostics (VD) and supported by a custom developed tool\r\n(ComVis), which enables interactive visual analysis of large\r\ndata sets by exploiting focus and context (simultaneous local\r\nand global view), multiple coordinated views and advanced\r\ninteraction. Measurements of patients with transplanted heart\r\nare rare and valuable, therefore they should be analyzed in all\r\ndetails. Different statistical characteristics and time series from\r\nECG and respiration measurements from fifteen patients and\r\ntwelve healthy controls have been analyzed using the ComVis\r\ntool. MIBG scintigraphy imaging was included, as well. Heart\r\nto mediastinum ratio (HMR) was used as a measure of the ventricular\r\nreinervation. HRV was analyzed to evaluate sinus node\r\nreinnervation. HRV was synchronized on well defined expiration\r\nmoment and analyzed in time-domain.We will describe some new\r\ndiagnostic results or rules that were deduced from interactive\r\nvisual analysis and may help in the future investigation of heart\r\nreinervation.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 763, "image_height": 724, "name": "Trobec-2008-Heart-image.jpg", "type": "image/jpeg", "size": 288905, "path": "Publication:Trobec-2008-Heart", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Trobec-2008-Heart/Trobec-2008-Heart-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Trobec-2008-Heart/Trobec-2008-Heart-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 761, 235, 762, 764, 765, 766 ], "booktitle": "Proceedings of the MIPRO 2008", "lecturer": [ 761 ], "location": "Opatija, Croatia", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 763, "image_height": 724, "name": "Trobec-2008-Heart-image.jpg", "type": "image/jpeg", "size": 288905, "path": "Publication:Trobec-2008-Heart", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Trobec-2008-Heart/Trobec-2008-Heart-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Trobec-2008-Heart/Trobec-2008-Heart-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": false, "use_in_gallery": false, "access": "public", "name": "Trobec-2008-Heart-paper.pdf", "type": "application/pdf", "size": 1022382, "path": "Publication:Trobec-2008-Heart", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Trobec-2008-Heart/Trobec-2008-Heart-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Trobec-2008-Heart/Trobec-2008-Heart-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "VRVis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Trobec-2008-Heart/", "__class": "Publication" }, { "id": "sari2008mt", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Photorealistic Rendering Of Measured BRDF Data", "date": "2008-05", "abstract": "Photo realistic rendering of measured data is a widely used method to generate reference images for analytical models. But before we can render measured data it has to be acquired and then fitted and interpolated. In this thesis we review two BRDF (Bidirectional Reflectance Distribution Function) databases from different Universities. One database consists of Spectral data where the other only measured the materials in RGB color space. Furthermore we introduce the reader in the basic BRDF models and in the basics of Monte Carlo sampling methods. \r\n\r\nWe integrate the rendering of measured BRDF data in the Advanced Rendering Toolkit (ART), which is developed since 1996 from the Institute of Computer Graphics and Algorithms of the Vienna University of Technology. Also we evaluate the generated images, with polar plots, to show their reflectance property. Also we show our trilinear interpolation approach, which was used for the data from the Cornell University. To present our work we also rendered several images with the ART pathtracer.", "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": 512, "name": "sari2008mt-image.jpg", "type": "image/jpeg", "size": 124961, "path": "Publication:sari2008mt", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/sari2008mt/sari2008mt-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/sari2008mt/sari2008mt-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 729 ], "supervisor": [ 567 ], "research_areas": [], "keywords": [ "rendering", "BRDF" ], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 512, "image_height": 512, "name": "sari2008mt-image.jpg", "type": "image/jpeg", "size": 124961, "path": "Publication:sari2008mt", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/sari2008mt/sari2008mt-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/sari2008mt/sari2008mt-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "sari2008mt-paper.pdf", "type": "application/pdf", "size": 1228363, "path": "Publication:sari2008mt", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/sari2008mt/sari2008mt-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/sari2008mt/sari2008mt-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/sari2008mt/", "__class": "Publication" }, { "id": "radax-2008-ir", "type_id": "techreport", "tu_id": null, "repositum_id": null, "title": "Instant Radiosity for Real-Time Global Illumination", "date": "2008-05", "abstract": "Global illumination is necessary to achieve realistic images. Although\nthere are plenty methods that focus on solving this problem,\nmost of them are not fast enough for interactive environments. Instant\nradiosity is a method that approximates the indirect lighting,\nas part of global illumination, by creating additional light sources.\nThereby it is very fast and does not need lot of preprocessing, so\nit is perfectly fit to be used within real-time requirements. Further\ntechniques based on instant radiosity have extended the method to\nprovide better image quality or faster rendering. So instant radiosity\nand its derivations can bring us global illumination in real-time.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 721 ], "number": "TR-186-2-08-15", "research_areas": [ "Rendering" ], "keywords": [ "Three-Dimensional Graphics and Realism", "shading", "radiosity", "real time rendering" ], "weblinks": [], "files": [ { "description": null, "filetitle": "paper", "main_file": false, "use_in_gallery": false, "access": "public", "name": "radax-2008-ir-paper.pdf", "type": "application/pdf", "size": 4770831, "path": "Publication:radax-2008-ir", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/radax-2008-ir/radax-2008-ir-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/radax-2008-ir/radax-2008-ir-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/radax-2008-ir/", "__class": "Publication" }, { "id": "bruckner-2008-IVV", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Integrating Volume Visualization Techniques Into Medical Applications", "date": "2008-05", "abstract": "One of the main obstacles in integrating 3D volume visualization in the clinical workflow is the time-consuming process of adjusting parameters such as viewpoint, transfer functions, and clipping planes required to generate a diagnostically relevant image. Current applications therefore make scarce use of volume rendering and instead primarily employ 2D views generated through standard techniques such as multi-planar reconstruction (MPR). However, in many cases 3D renditions can supply additional useful information. This paper discusses ongoing work which aims to improve the integration of 3D visualization into the diagnostic workflow by automatically generating meaningful renditions based on minimal user interaction. A method for automatically generating 3D views for structures in 2D slices based on a single picking interaction is presented.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Automatic 3D view selection", "filetitle": "Image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 500, "image_height": 373, "name": "bruckner-2008-IVV-Image.jpg", "type": "image/jpeg", "size": 106917, "path": "Publication:bruckner-2008-IVV", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/bruckner-2008-IVV/bruckner-2008-IVV-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/bruckner-2008-IVV/bruckner-2008-IVV-Image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 161, 605, 162, 166 ], "booktitle": "Proceedings of 5th IEEE International Symposium on Biomedical Imaging: From Nano to Macro", "date_from": "2008-05-14", "date_to": "2008-05-17", "isbn": "978-1-4244-2002-5", "lecturer": [ 161 ], "location": "Paris, Frankreich", "pages_from": "820", "pages_to": "823", "research_areas": [], "keywords": [ "viewpoint selection", "medical visualization", "volume rendering" ], "weblinks": [], "files": [ { "description": "Automatic 3D view selection", "filetitle": "Image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 500, "image_height": 373, "name": "bruckner-2008-IVV-Image.jpg", "type": "image/jpeg", "size": 106917, "path": "Publication:bruckner-2008-IVV", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/bruckner-2008-IVV/bruckner-2008-IVV-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/bruckner-2008-IVV/bruckner-2008-IVV-Image:thumb{{size}}.png" }, { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "bruckner-2008-IVV-Paper.pdf", "type": "application/pdf", "size": 2240970, "path": "Publication:bruckner-2008-IVV", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/bruckner-2008-IVV/bruckner-2008-IVV-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/bruckner-2008-IVV/bruckner-2008-IVV-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "diagvis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/bruckner-2008-IVV/", "__class": "Publication" }, { "id": "kohlmann-2008-lse", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "LiveSync++: Enhancements of an Interaction Metaphor", "date": "2008-05", "abstract": "The LiveSync interaction metaphor allows an efficient and non-intrusive integration of 2D and 3D visualizations in medical workstations. This is achieved by synchronizing the 2D slice view with the volumetric view. The synchronization is initiated by a simple\r\npicking on a structure of interest in the slice view. In this paper we\r\npresent substantial enhancements of the existing concept to improve its usability. First, an efficient parametrization for the derived parameters is presented, which allows hierarchical refinement of the\r\nsearch space for good views. Second, the extraction of the feature of\r\ninterest is performed in a way, which is adapting to the volumetric extent of the feature. The properties of the extracted features are utilized to adjust a predefined transfer function in a feature-enhancing manner. Third, a new interaction mode is presented, which allows the integration of more knowledge about the user-intended visualization, without increasing the interaction effort. Finally, a new clipping technique is integrated, which guarantees an unoccluded view on the structure of interest while keeping important contextual information.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 600, "image_height": 550, "name": "kohlmann-2008-lse-image.jpg", "type": "image/jpeg", "size": 137567, "path": "Publication:kohlmann-2008-lse", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/kohlmann-2008-lse/kohlmann-2008-lse-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/kohlmann-2008-lse/kohlmann-2008-lse-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 605, 161, 162, 166 ], "booktitle": "Proceedings of Graphics Interface 2008", "date_from": "2008-05-28", "date_to": "2008-05-30", "lecturer": [ 605 ], "location": "Windsor, Ontario, Canada", "pages_from": "81", "pages_to": "88", "research_areas": [], "keywords": [ "Viewpoint Selection", "Linked Views", "Medical Visualization", "Smart Interaction" ], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 600, "image_height": 550, "name": "kohlmann-2008-lse-image.jpg", "type": "image/jpeg", "size": 137567, "path": "Publication:kohlmann-2008-lse", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/kohlmann-2008-lse/kohlmann-2008-lse-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/kohlmann-2008-lse/kohlmann-2008-lse-image:thumb{{size}}.png" }, { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 377, "image_height": 508, "name": "kohlmann-2008-lse-image.png", "type": "image/png", "size": 363809, "path": "Publication:kohlmann-2008-lse", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/kohlmann-2008-lse/kohlmann-2008-lse-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/kohlmann-2008-lse/kohlmann-2008-lse-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "kohlmann-2008-lse-paper.pdf", "type": "application/pdf", "size": 2106058, "path": "Publication:kohlmann-2008-lse", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/kohlmann-2008-lse/kohlmann-2008-lse-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/kohlmann-2008-lse/kohlmann-2008-lse-paper:thumb{{size}}.png" }, { "description": "", "filetitle": "slides", "main_file": false, "use_in_gallery": false, "access": "public", "name": "kohlmann-2008-lse-slides.zip", "type": "application/x-zip", "size": 17306084, "path": "Publication:kohlmann-2008-lse", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/kohlmann-2008-lse/kohlmann-2008-lse-slides.zip", "thumb_image_sizes": [] }, { "description": "", "filetitle": "video", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 800, "preview_image_height": 600, "name": "kohlmann-2008-lse-video.avi", "type": "video/x-msvideo", "size": 9722292, "path": "Publication:kohlmann-2008-lse", "preview_name": "kohlmann-2008-lse-video:preview.png", "preview_type": "image/jpeg", "preview_size": 17377, "url": "https://www.cg.tuwien.ac.at/research/publications/2008/kohlmann-2008-lse/kohlmann-2008-lse-video.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/kohlmann-2008-lse/kohlmann-2008-lse-video:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2008/kohlmann-2008-lse/kohlmann-2008-lse-video:video.mp4" } ], "projects_workgroups": [ "diagvis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/kohlmann-2008-lse/", "__class": "Publication" }, { "id": "fuchs_raphael_2007_par", "type_id": "journalpaper_notalk", "tu_id": null, "repositum_id": null, "title": "Parallel Vectors Criteria for Unsteady Flow Vortices", "date": "2008-05", "abstract": "Feature-based flow visualization is naturally dependent\r\n on feature extraction. To extract flow features, often higher-order\r\n properties of the flow data are used such as the Jacobian or\r\n curvature properties, implicitly describing the flow features in\r\n terms of their inherent flow characteristics (e.g., collinear flow\r\n and vorticity vectors). In this paper we present recent research\r\n which leads to the (not really surprising) conclusion that feature extraction algorithms\r\n need to be extended to a time-dependent analysis framework (in terms\r\n of time derivatives) when dealing with unsteady flow data.\r\n Accordingly, we present two extensions of the parallel vectors based vortex\r\n extraction criteria to the time-dependent domain and show the improvements of\r\n feature-based flow visualization in comparison to the\r\n steady versions of this extraction algorithm both in the context of\r\n a high-resolution dataset, i.e., a simulation specifically designed\r\n to evaluate our new approach, as well as for a real-world dataset\r\n from a concrete application.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "Image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 902, "image_height": 902, "name": "fuchs_raphael_2007_par-Image.jpg", "type": "image/jpeg", "size": 112972, "path": "Publication:fuchs_raphael_2007_par", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs_raphael_2007_par/fuchs_raphael_2007_par-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs_raphael_2007_par/fuchs_raphael_2007_par-Image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 672, 695, 176, 696, 662 ], "journal": "TVCG", "number": "3", "pages_from": "615", "pages_to": "626", "volume": "14", "research_areas": [], "keywords": [ "Time-Varying Data Visualization", "Vortex Feature Detection" ], "weblinks": [], "files": [ { "description": "Streamlines and pathlines in a model of a rotating vortex rope. (a) The vortex core line based on streamlines (according to Sujudi and Haimes) is shown as a thick grey tube (it is the only grey line which also is a helix). (b) The vortex core line based on pathlines (shown in yellow on the right) has the same pitch but a larger radius (it is the only helical pathline, shown in thick magenta).", "filetitle": "Figure1", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1110, "image_height": 764, "name": "fuchs_raphael_2007_par-Figure1.jpg", "type": "image/jpeg", "size": 134880, "path": "Publication:fuchs_raphael_2007_par", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs_raphael_2007_par/fuchs_raphael_2007_par-Figure1.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs_raphael_2007_par/fuchs_raphael_2007_par-Figure1:thumb{{size}}.png" }, { "description": "For the vortex rope in the depicted dataset, iso-values of pressure give good insight on where the vortex core line is located. We can clearly see how the yellow core line (extracted using the classical approach of Sujudi and Haimes deviates from the center of pressure isosurface. The modification to time derivative aware extraction of the vortex coreline improves the results visibly.", "filetitle": "Figure2", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1102, "image_height": 1204, "name": "fuchs_raphael_2007_par-Figure2.jpg", "type": "image/jpeg", "size": 135176, "path": "Publication:fuchs_raphael_2007_par", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs_raphael_2007_par/fuchs_raphael_2007_par-Figure2.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs_raphael_2007_par/fuchs_raphael_2007_par-Figure2:thumb{{size}}.png" }, { "description": "We compare the vortex core lines found by the original method of Sujudi and Haimes and the modified version. Two views of the same timestep show the benefits of the modification. Both views show the same vortex core line and isosurface. (1) In one case the original method does not detect one vortex core at all. (2) The time-aware modification traverses the full length of the vortex core and continues into the region of strong turbulence at the top of the cylinder. (3) The original vortex core line leaves the core region of the vortex and vanishes in a substantial portion of the vortex region.", "filetitle": "Figure3", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1344, "image_height": 1229, "name": "fuchs_raphael_2007_par-Figure3.jpg", "type": "image/jpeg", "size": 241908, "path": "Publication:fuchs_raphael_2007_par", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs_raphael_2007_par/fuchs_raphael_2007_par-Figure3.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs_raphael_2007_par/fuchs_raphael_2007_par-Figure3:thumb{{size}}.png" }, { "description": "Comparison of acceleration vector magnitudes: The scatterplots show that the magnitudes of the two variants of the acceleration vectors can differ significantly in the crucial timesteps, i.e., timesteps of major changes over time, after ignition (we have normalized the magnitudes such that the center of gravity corresponds to the origin).", "filetitle": "Figure4", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 658, "image_height": 334, "name": "fuchs_raphael_2007_par-Figure4.gif", "type": "image/gif", "size": 25961, "path": "Publication:fuchs_raphael_2007_par", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs_raphael_2007_par/fuchs_raphael_2007_par-Figure4.gif", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs_raphael_2007_par/fuchs_raphael_2007_par-Figure4:thumb{{size}}.png" }, { "description": "We compare the computed corelines with respect to lambda2 and equivalence ratio. (a) The modified algorithm detects two vortex core lines (red) whereas the original version only detects the main vortex core line (white). (b) An isosurface of equivalence ratio at 0.7 containing the region of optimal mixing. (c) The surface containing the region of equivalence ratio of 0.5 and lambda2< -1000$.", "filetitle": "Figure5", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 2652, "image_height": 863, "name": "fuchs_raphael_2007_par-Figure5.jpg", "type": "image/jpeg", "size": 479277, "path": "Publication:fuchs_raphael_2007_par", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs_raphael_2007_par/fuchs_raphael_2007_par-Figure5.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs_raphael_2007_par/fuchs_raphael_2007_par-Figure5:thumb{{size}}.png" }, { "description": "Gradient estimation at a vertex (red) using the Green-Gauss theorem requires to estimate cell center velocities and mid-point velocities. (a) The surrounding surface uses cell centers (green) and mid-points (gray). (b) In this detail illustration of the lighter gray section from (a) we see the full configuration for a single surrounding tetrahedron.", "filetitle": "Figure6", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 708, "image_height": 407, "name": "fuchs_raphael_2007_par-Figure6.gif", "type": "image/gif", "size": 23136, "path": "Publication:fuchs_raphael_2007_par", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs_raphael_2007_par/fuchs_raphael_2007_par-Figure6.gif", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs_raphael_2007_par/fuchs_raphael_2007_par-Figure6:thumb{{size}}.png" }, { "description": "", "filetitle": "Image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 902, "image_height": 902, "name": "fuchs_raphael_2007_par-Image.jpg", "type": "image/jpeg", "size": 112972, "path": "Publication:fuchs_raphael_2007_par", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs_raphael_2007_par/fuchs_raphael_2007_par-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs_raphael_2007_par/fuchs_raphael_2007_par-Image:thumb{{size}}.png" }, { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "fuchs_raphael_2007_par-Paper.pdf", "type": "application/pdf", "size": 4427626, "path": "Publication:fuchs_raphael_2007_par", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs_raphael_2007_par/fuchs_raphael_2007_par-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs_raphael_2007_par/fuchs_raphael_2007_par-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "PVG" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fuchs_raphael_2007_par/", "__class": "Publication" }, { "id": "Habel_08_SSH", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Efficient Spherical Harmonics Lighting with the Preetham Skylight Model", "date": "2008-04", "abstract": "We present a fast and compact representation of a skylight model for spherical harmonics lighting, especially for outdoor scenes. This representation allows dynamically changing the sun position and weather conditions on a per frame basis. We chose the most used model in real-time graphics, the Preetham skylight model, because it can deliver both realistic colors and dynamic range and its extension into spherical harmonics can be used to realistically light a scene. We separate the parameters of the Preetham skylight models' spherical harmonics extension and perform a polynomial two-dimensional non-linear least squares fit for the principal parameters to achieve both negligible memory and computation costs. Additionally, we execute a domain specific Gibbs phenomena suppression to remove ringing artifacts.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Sunset", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1024, "image_height": 768, "name": "Habel_08_SSH-image.jpg", "type": "image/jpeg", "size": 313779, "path": "Publication:Habel_08_SSH", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Habel_08_SSH/Habel_08_SSH-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Habel_08_SSH/Habel_08_SSH-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 618, 706, 193 ], "booktitle": "Eurographics 2008 - Short Papers", "editor": "Katerina Mania and Erik Reinhard", "issn": "1017-4656", "lecturer": [ 618 ], "location": "Crete, Greece", "pages_from": "119", "pages_to": "122", "publisher": "Eurographics Association", "research_areas": [ "Rendering" ], "keywords": [ "Natural Phenomena", "Spherical Harmonics", "Skylight" ], "weblinks": [], "files": [ { "description": "Sunset", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1024, "image_height": 768, "name": "Habel_08_SSH-image.jpg", "type": "image/jpeg", "size": 313779, "path": "Publication:Habel_08_SSH", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Habel_08_SSH/Habel_08_SSH-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Habel_08_SSH/Habel_08_SSH-image:thumb{{size}}.png" }, { "description": null, "filetitle": "implementation", "main_file": false, "use_in_gallery": false, "access": "public", "name": "Habel_08_SSH-implementation.rar", "type": "application/x-rar", "size": 147898, "path": "Publication:Habel_08_SSH", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Habel_08_SSH/Habel_08_SSH-implementation.rar", "thumb_image_sizes": [] }, { "description": "Sky-SH", "filetitle": "Movie", "main_file": false, "use_in_gallery": false, "access": "public", "name": "Habel_08_SSH-Movie.wmv", "type": "text/plain", "size": 6629409, "path": "Publication:Habel_08_SSH", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Habel_08_SSH/Habel_08_SSH-Movie.wmv", "thumb_image_sizes": [] }, { "description": "Efficient Spherical Harmonics Lighting with the Preetham Skylight Model", "filetitle": "Preprint", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Habel_08_SSH-Preprint.pdf", "type": "application/pdf", "size": 992797, "path": "Publication:Habel_08_SSH", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Habel_08_SSH/Habel_08_SSH-Preprint.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Habel_08_SSH/Habel_08_SSH-Preprint:thumb{{size}}.png" } ], "projects_workgroups": [ "Treelumination" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Habel_08_SSH/", "__class": "Publication" }, { "id": "mattausch-2008-CHC", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "CHC++: Coherent Hierarchical Culling Revisited", "date": "2008-04", "abstract": "We present a new algorithm for efficient occlusion culling using hardware occlusion queries. The algorithm significantly improves on previous techniques by making better use of temporal and spatial coherence of visibility. This is achieved by using adaptive visibility prediction and query batching. As a result of the new optimizations the number of issued occlusion queries and the number of rendering state changes are significantly reduced. We also propose a simple method for determining tighter bounding volumes for occlusion queries and a method which further reduces the pipeline stalls. The proposed method provides up to an order of magnitude speedup over the previous state of the art. The new technique is simple to implement, does not rely on hardware calibration and integrates well with modern game engines.", "authors_et_al": false, "substitute": null, "main_image": { "description": "color coded state changes induced by CHC++", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1670, "image_height": 1420, "name": "mattausch-2008-CHC-image.png", "type": "image/png", "size": 32953, "path": "Publication:mattausch-2008-CHC", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/mattausch-2008-CHC/mattausch-2008-CHC-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/mattausch-2008-CHC/mattausch-2008-CHC-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 326, 198, 193 ], "date_from": "2008-04-14", "date_to": "2008-04-18", "event": "EUROGRAPHICS 2008", "issn": "0167-7055", "journal": "Computer Graphics Forum (Proceedings Eurographics 2008)", "lecturer": [ 326 ], "location": "Crete", "number": "2", "pages_from": "221", "pages_to": "230", "volume": "27", "research_areas": [ "Rendering" ], "keywords": [ "temporal coherence", "dynamic occlusion culling", "occlusion queries" ], "weblinks": [], "files": [ { "description": null, "filetitle": "draft", "main_file": true, "use_in_gallery": false, "access": "public", "name": "mattausch-2008-CHC-draft.pdf", "type": "application/pdf", "size": 2085122, "path": "Publication:mattausch-2008-CHC", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/mattausch-2008-CHC/mattausch-2008-CHC-draft.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/mattausch-2008-CHC/mattausch-2008-CHC-draft:thumb{{size}}.png" }, { "description": null, "filetitle": "EG slides", "main_file": false, "use_in_gallery": false, "access": "public", "name": "mattausch-2008-CHC-EG slides.ppt", "type": "application/msword", "size": 3241472, "path": "Publication:mattausch-2008-CHC", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/mattausch-2008-CHC/mattausch-2008-CHC-EG slides.ppt", "thumb_image_sizes": [] }, { "description": "color coded state changes induced by CHC++", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1670, "image_height": 1420, "name": "mattausch-2008-CHC-image.png", "type": "image/png", "size": 32953, "path": "Publication:mattausch-2008-CHC", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/mattausch-2008-CHC/mattausch-2008-CHC-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/mattausch-2008-CHC/mattausch-2008-CHC-image:thumb{{size}}.png" }, { "description": "video of multiquery accumulation in the vienna scene", "filetitle": "multiqueries-video", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 720, "preview_image_height": 480, "name": "mattausch-2008-CHC-multiqueries-video.avi", "type": "video/x-msvideo", "size": 37535148, "path": "Publication:mattausch-2008-CHC", "preview_name": "mattausch-2008-CHC-multiqueries-video:preview.png", "preview_type": "image/jpeg", "preview_size": 22685, "url": "https://www.cg.tuwien.ac.at/research/publications/2008/mattausch-2008-CHC/mattausch-2008-CHC-multiqueries-video.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/mattausch-2008-CHC/mattausch-2008-CHC-multiqueries-video:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2008/mattausch-2008-CHC/mattausch-2008-CHC-multiqueries-video:video.mp4" }, { "description": "used walkthroughs in powerplant", "filetitle": "walkthrough-videos", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 800, "preview_image_height": 600, "name": "mattausch-2008-CHC-walkthrough-videos.avi", "type": "video/x-msvideo", "size": 84248576, "path": "Publication:mattausch-2008-CHC", "preview_name": "mattausch-2008-CHC-walkthrough-videos:preview.png", "preview_type": "image/jpeg", "preview_size": 17035, "url": "https://www.cg.tuwien.ac.at/research/publications/2008/mattausch-2008-CHC/mattausch-2008-CHC-walkthrough-videos.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/mattausch-2008-CHC/mattausch-2008-CHC-walkthrough-videos:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2008/mattausch-2008-CHC/mattausch-2008-CHC-walkthrough-videos:video.mp4" } ], "projects_workgroups": [ "CROSSMOD" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/mattausch-2008-CHC/", "__class": "Publication" }, { "id": "fruehstueck-2008-gpu", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "GPU based Clipmaps", "date": "2008-04", "abstract": "Terrain rendering has a wide range of applications. It is used in cartography and landscape\r\nplanning as well as in the entertainment sector. Applications that have to render large terrain\r\nare facing the challenge of handling a vast amount of source data. The size of such terrain\r\ndata exceeds the capabilities of current PCs by far.\r\nIn this work an improved terrain rendering technique is introduced. It allows the rendering\r\nof surfaces with an arbitrary basis like the spherical-shaped earth. Our algorithm extends\r\nthe Geometry Clipmaps algorithm, a technique that allows to render very large terrain data\r\nwithout losing performance. This algorithm was developed by Losasso and Hoppe in 2004.\r\nAsirvatham and Hoppe improved this algorithm in 2005 by increasing the utilization of modern\r\ngraphics hardware. Nevertheless both algorithms lack of the ability to render large curved\r\nsurfaces.\r\nOur application overcomes this restriction by using a texture holding 3D points instead of\r\na heightmap. This enables our implementation to render terrain that resides on an arbitrary\r\nbasis. The created mesh is not bound by a regular grid mesh that can only be altered in\r\nz-direction. The drawback of this change of the original geometry clipmap algorithm is the\r\nintroduction of a precision problem that restricts the algorithm to render only a limited area.\r\nThis problem is handled by patching the whole surface with individual acting, geometry\r\nclipmap quads.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 221, "image_height": 222, "name": "fruehstueck-2008-gpu-image.psd", "type": "image/x-photoshop", "size": 120612, "path": "Publication:fruehstueck-2008-gpu", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fruehstueck-2008-gpu/fruehstueck-2008-gpu-image.psd", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/fruehstueck-2008-gpu/fruehstueck-2008-gpu-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 728 ], "supervisor": [ 190, 216 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 221, "image_height": 222, "name": "fruehstueck-2008-gpu-image.psd", "type": "image/x-photoshop", "size": 120612, "path": "Publication:fruehstueck-2008-gpu", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fruehstueck-2008-gpu/fruehstueck-2008-gpu-image.psd", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/fruehstueck-2008-gpu/fruehstueck-2008-gpu-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "fruehstueck-2008-gpu-paper.pdf", "type": "application/pdf", "size": 7228267, "path": "Publication:fruehstueck-2008-gpu", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fruehstueck-2008-gpu/fruehstueck-2008-gpu-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/fruehstueck-2008-gpu/fruehstueck-2008-gpu-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/fruehstueck-2008-gpu/", "__class": "Publication" }, { "id": "weidlich_2008_magwpt", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Modeling Aventurescent Gems with Procedural Textures", "date": "2008-04", "abstract": "In this paper we present the results of an investigation on how one can model aventurescence, an interesting and optically appealing property of some gemstones. Our goal was to find a method that is both efficient and reasonably realistic, and that can still be used in the context of a global illumination rendering system.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "sunstone", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 640, "image_height": 480, "name": "weidlich_2008_magwpt-sunstone.jpg", "type": "image/jpeg", "size": 269041, "path": "Publication:weidlich_2008_magwpt", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/weidlich_2008_magwpt/weidlich_2008_magwpt-sunstone.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/weidlich_2008_magwpt/weidlich_2008_magwpt-sunstone:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 567, 192 ], "booktitle": "Proceedings of the Spring Conference on Computer Graphics (SCCG)", "date_from": "2008-04-21", "date_to": "2008-04-23", "lecturer": [ 567 ], "location": "Budmarice", "publisher": "ACM", "research_areas": [], "keywords": [ "gemstone rendering", "aventurescence", "procedural textures" ], "weblinks": [], "files": [ { "description": "", "filetitle": "opaque", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 640, "image_height": 480, "name": "weidlich_2008_magwpt-opaque.jpg", "type": "image/jpeg", "size": 221091, "path": "Publication:weidlich_2008_magwpt", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/weidlich_2008_magwpt/weidlich_2008_magwpt-opaque.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/weidlich_2008_magwpt/weidlich_2008_magwpt-opaque:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "weidlich_2008_magwpt-paper.pdf", "type": "application/pdf", "size": 5336300, "path": "Publication:weidlich_2008_magwpt", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/weidlich_2008_magwpt/weidlich_2008_magwpt-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/weidlich_2008_magwpt/weidlich_2008_magwpt-paper:thumb{{size}}.png" }, { "description": "", "filetitle": "sunstone", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 640, "image_height": 480, "name": "weidlich_2008_magwpt-sunstone.jpg", "type": "image/jpeg", "size": 269041, "path": "Publication:weidlich_2008_magwpt", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/weidlich_2008_magwpt/weidlich_2008_magwpt-sunstone.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/weidlich_2008_magwpt/weidlich_2008_magwpt-sunstone:thumb{{size}}.png" } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/weidlich_2008_magwpt/", "__class": "Publication" }, { "id": "TR-186-2-08-06", "type_id": "techreport", "tu_id": null, "repositum_id": null, "title": "Variance Comparison for Volumetric Industrial CT Data", "date": "2008-04", "abstract": "This paper proposes a novel technique for the direct comparison of a surface model with the corresponding industrial CT volume. We do not require the generation of a mesh from the CT scan and instead perform comparison directly with the raw volume dataset. Our\r\ntechnique uses the information from the surface model to locate corresponding points in the CT dataset. We then compute various comparison metrics to perform distance analysis and normal analysis. The metrics are presented to the user both visually as well as quantitatively. The comparison techniques are divided into two groups namely geometry-driven comparison techniques and visual-driven comparison techniques. The geometry-driven techniques color code the datasets and render distance glyphs to provide an overview, while the visual-driven techniques can be used for a localized examination and for determining precise information about the deviation between the datasets.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 512, "image_height": 512, "name": "TR-186-2-08-06-.png", "type": "image/png", "size": 112477, "path": "Publication:TR-186-2-08-06", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-06/TR-186-2-08-06-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-06/TR-186-2-08-06-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 607, 611, 166 ], "number": "TR-186-2-08-06", "research_areas": [], "keywords": [ "Volume Rendering", "Uncertainty", "Variance Comparison", "Industrial CT" ], "weblinks": [], "files": [ { "description": "", "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 512, "image_height": 512, "name": "TR-186-2-08-06-.png", "type": "image/png", "size": 112477, "path": "Publication:TR-186-2-08-06", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-06/TR-186-2-08-06-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-06/TR-186-2-08-06-:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": false, "use_in_gallery": false, "access": "public", "name": "TR-186-2-08-06-paper.pdf", "type": "application/pdf", "size": 3127153, "path": "Publication:TR-186-2-08-06", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-06/TR-186-2-08-06-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-06/TR-186-2-08-06-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/TR-186-2-08-06/", "__class": "Publication" }, { "id": "GEBHART-2008-AGV", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Automatisches Generieren von 3D-Straßensystemen", "date": "2008-03", "abstract": "In dieser Arbeit geht es um die Generierung von 3D Geometrie für große Straßensysteme.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 771 ], "diploma_examina": "2008-03-26", "supervisor": [ 193 ], "research_areas": [], "keywords": [ "3d street modeling" ], "weblinks": [], "files": [], "projects_workgroups": [ "GAMEWORLD" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/GEBHART-2008-AGV/", "__class": "Publication" }, { "id": "weidlich_2007_rrbuc", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Realistic Rendering of Birefringency in Uniaxial Crystals", "date": "2008-03", "abstract": "In this paper we derive the complete set of formulas which is needed to generate physically plausible images of uniaxial crystals. So far no computer graphics publication contains all the formulas one needs to compute the interaction of light with such crystals in a form that is useable by a graphics application, especially if a polarisation-aware rendering system is being used.\r\n\r\nThis paper contains the complete derivation of the Fresnel coefficients for birefringent transparent materials, as well as for the direction cosines of the extraordinary ray and the Mueller matrices necessary to describe polarisation effects. The formulas we derive can be directly used in a ray based renderer, and we demonstrate these capabilities in test scenes.", "authors_et_al": false, "substitute": null, "main_image": { "description": "image of a bi-refringent calcite crystal", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 616, "image_height": 617, "name": "weidlich_2007_rrbuc-image.jpg", "type": "image/jpeg", "size": 98795, "path": "Publication:weidlich_2007_rrbuc", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/weidlich_2007_rrbuc/weidlich_2007_rrbuc-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/weidlich_2007_rrbuc/weidlich_2007_rrbuc-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 567, 192 ], "journal": "ACM Transactions on Graphics", "lecturer": [ 567 ], "number": "1", "pages_from": "6:1", "pages_to": "6:12", "volume": "27", "research_areas": [], "keywords": [ "polarization", "crystals", "Birefringence" ], "weblinks": [], "files": [ { "description": "image of a bi-refringent calcite crystal", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 616, "image_height": 617, "name": "weidlich_2007_rrbuc-image.jpg", "type": "image/jpeg", "size": 98795, "path": "Publication:weidlich_2007_rrbuc", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/weidlich_2007_rrbuc/weidlich_2007_rrbuc-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/weidlich_2007_rrbuc/weidlich_2007_rrbuc-image:thumb{{size}}.png" }, { "description": "full journal paper", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "weidlich_2007_rrbuc-paper.pdf", "type": "application/pdf", "size": 2057969, "path": "Publication:weidlich_2007_rrbuc", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/weidlich_2007_rrbuc/weidlich_2007_rrbuc-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/weidlich_2007_rrbuc/weidlich_2007_rrbuc-paper:thumb{{size}}.png" } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/weidlich_2007_rrbuc/", "__class": "Publication" }, { "id": "altendorfer-2008-vts", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Void Tracking in SiC Particle Reinforced Al", "date": "2008-03", "abstract": "The expansion behavior of particulate reinforced AlSiC metal matrix composites (MMCs)\r\nduring a thermal cycle shows anomalies at temperatures above 250°C, explained by viscoplastic\r\nmatrix deformations and changing void volume fractions. Volumetric images of\r\nthe sample acquired by synchrotron tomography at several temperatures between 30°C\r\nand 400°C are used to analyze the void kinetics. These high-resolution low-contrast\r\n3D + T images are not aligned, thus only allowing quantitative comparisons over areas\r\ncomprising many voids. Analysis of speci\fc voids at various temperatures was not\r\nfeasible, due to the three-dimensional misalignment.\r\nWe present a 3D registration approach based on mutual information that allows for\r\nsub-pixel accurate registration. A maximum intensity projection (MIP) may be used\r\nfor a manual pre-alignment. Further software tools for the analysis of void kinetics\r\nof AlSiC provide linked views for 2D slices, 3D isosurfaces, volume rendering, as well\r\nas overlaid contours (isolines) of multiple images on an arbitrarily positionable cutting\r\nplane, and the calculation of a shape factor. By registering the volumetric datasets,\r\nwe were able to visualize the shrinkage and expansion of a speci\fc void during thermal\r\ncycling between room temperature and 400°C and to analyze the change of quantitative\r\nproperties of speci\fc voids{including volume, surface, shape factor|resulting from\r\ntemperature changes.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 748, "image_height": 579, "name": "altendorfer-2008-vts-image.jpg", "type": "image/jpeg", "size": 286840, "path": "Publication:altendorfer-2008-vts", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/altendorfer-2008-vts/altendorfer-2008-vts-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/altendorfer-2008-vts/altendorfer-2008-vts-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 719 ], "supervisor": [ 166, 1331, 1332 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 748, "image_height": 579, "name": "altendorfer-2008-vts-image.jpg", "type": "image/jpeg", "size": 286840, "path": "Publication:altendorfer-2008-vts", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/altendorfer-2008-vts/altendorfer-2008-vts-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/altendorfer-2008-vts/altendorfer-2008-vts-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "altendorfer-2008-vts-paper.pdf", "type": "application/pdf", "size": 4367793, "path": "Publication:altendorfer-2008-vts", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/altendorfer-2008-vts/altendorfer-2008-vts-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/altendorfer-2008-vts/altendorfer-2008-vts-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/altendorfer-2008-vts/", "__class": "Publication" }, { "id": "schoellhuber-2008-asc", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Automatic Segmentation of Contrast Enhanced Cardiac MRI for Myocardial Perfusion Analysis", "date": "2008-03", "abstract": "Cardiovascular diseases are the major cause of death in the developed world. About\r\nhalf of these are due to ischemia heart diseases. The high death rate caused by\r\ncoronary artery diseases increases the need for preliminary detection. Perfusion\r\nmagnetic resonance imaging has turned out to be very promising for this purpose.\r\nA contrast agent is injected intravenously to visualize the perfusion. Due to the\r\nextremely time-consuming manual analysis of these relatively large datasets, efforts\r\nfor automatic approaches have been introduced. Most of these proposed methods\r\nfocus on parts of the analysis process. The present thesis identifies four steps for\r\nan automatic analysis approach: localization of the heart, suppression of motion\r\nartifacts, segmentation of the myocardium, and perfusion analysis.\r\nThis thesis presents a method covering all these subtasks in an automatic manner\r\nwith no need for any user interaction. First the acquired MR images are analyzed\r\nto roughly detect the heart. A registration step compensates motion artifacts based\r\non the breathing of the patient. The segmentation step provides the contour of the\r\nmyocardium at every time step. Based on these segmentations the perfusion is\r\nquantified.\r\nThis thesis gives a detailed description of the implementation. Furthermore\r\nthe algorithm was tested on 11 datasets. The obtained results are presented and\r\ndiscussed. Inspection of the results indicates that this method is very promising for\r\nan efficient perfusion analysis.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1729, "image_height": 1139, "name": "schoellhuber-2008-asc-image.jpg", "type": "image/jpeg", "size": 483059, "path": "Publication:schoellhuber-2008-asc", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/schoellhuber-2008-asc/schoellhuber-2008-asc-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/schoellhuber-2008-asc/schoellhuber-2008-asc-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 726 ], "supervisor": [ 498, 231, 166 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1729, "image_height": 1139, "name": "schoellhuber-2008-asc-image.jpg", "type": "image/jpeg", "size": 483059, "path": "Publication:schoellhuber-2008-asc", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/schoellhuber-2008-asc/schoellhuber-2008-asc-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/schoellhuber-2008-asc/schoellhuber-2008-asc-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "schoellhuber-2008-asc-paper.pdf", "type": "application/pdf", "size": 15530739, "path": "Publication:schoellhuber-2008-asc", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/schoellhuber-2008-asc/schoellhuber-2008-asc-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/schoellhuber-2008-asc/schoellhuber-2008-asc-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/schoellhuber-2008-asc/", "__class": "Publication" }, { "id": "Singh-2008-Metric", "type_id": "poster", "tu_id": null, "repositum_id": null, "title": "A Load Simulation and Metrics Framework for Distributed Virtual Reality", "date": "2008-03", "abstract": "We describe a simple load-measure-model method for analyzing the\r\nscalability of Distributed Virtual Environments (DVEs). We use a\r\nload simulator and three metrics to measure a DVE’s engine with\r\nvarying numbers of simulated users. Our load simulator logs in as\r\na remote client and plays according to how users played during the\r\nconducted user study. Two quality of virtuality metrics, fidelity and\r\nconsistency, describe the user’s experience in the DVE. One engine\r\nperformance metric provides the cycle time of the engine’s primary\r\nloop. Simulation results (up to 420 users) are discussed.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 692, "image_height": 469, "name": "Singh-2008-Metric-.jpg", "type": "image/jpeg", "size": 83975, "path": "Publication:Singh-2008-Metric", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Singh-2008-Metric/Singh-2008-Metric-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Singh-2008-Metric/Singh-2008-Metric-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 770, 581, 235 ], "date_from": "2008-03-08", "date_to": "2008-03-12", "editor": "Reno, Nevada, USA", "event": "Virtual Reality Conference, 2008. VR ", "isbn": "978-1-4244-1971-5", "location": "Reno, Nevada USA", "note": "Lecturer: Denis Gracanin", "pages_from": "287", "pages_to": "288", "publisher": "IEEE", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 692, "image_height": 469, "name": "Singh-2008-Metric-.jpg", "type": "image/jpeg", "size": 83975, "path": "Publication:Singh-2008-Metric", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Singh-2008-Metric/Singh-2008-Metric-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Singh-2008-Metric/Singh-2008-Metric-:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Singh-2008-Metric-paper.pdf", "type": "application/pdf", "size": 319718, "path": "Publication:Singh-2008-Metric", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Singh-2008-Metric/Singh-2008-Metric-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Singh-2008-Metric/Singh-2008-Metric-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "VRVis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Singh-2008-Metric/", "__class": "Publication" }, { "id": "bruckner-2008-IIV", "type_id": "phdthesis", "tu_id": null, "repositum_id": null, "title": "Interactive Illustrative Volume Visualization", "date": "2008-03", "abstract": "Illustrations are essential for the effective communication of complex subjects. Their production, however, is a difficult and expensive task. In recent years, three-dimensional imaging has become a vital tool not only in medical diagnosis and treatment planning, but also in many technical disciplines (e.g., material inspection), biology, and archeology. Modalities such as X-Ray Computed Tomography (CT) and Magnetic Resonance Imaging (MRI) produce high-resolution volumetric scans on a daily basis. It seems counter-intuitive that even though such a wealth of data is available, the production of an illustration should still require a mainly manual and time-consuming process.\n\nThis thesis is devoted to the computer-assisted generation of illustrations directly from volumetric data using advanced visualization techniques. The concept of a direct volume illustration system is introduced for this purpose. Instead of requiring an additional modeling step, this system allows the designer of an illustration to work directly on the measured data. Abstraction, a key component of traditional illustrations, is used in order to reduce visual clutter, emphasize important structures, and reveal hidden detail. Low-level abstraction techniques are concerned with the appearance of objects and allow flexible artistic shading of structures in volumetric data sets. High-level abstraction techniques control which objects are visible. For this purpose, novel methods for the generation of ghosted and exploded views are introduced.\n\nThe visualization techniques presented in this thesis employ the features of current graphics hardware to achieve interactive performance. The resulting system allows the generation of expressive illustrations directly from volumetric data with applications in medical training, patient education, and scientific communication.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Illustrative visualization results", "filetitle": "Teaser", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1024, "image_height": 1024, "name": "bruckner-2008-IIV-Teaser.jpg", "type": "image/jpeg", "size": 566494, "path": "Publication:bruckner-2008-IIV", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/bruckner-2008-IIV/bruckner-2008-IIV-Teaser.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/bruckner-2008-IIV/bruckner-2008-IIV-Teaser:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 161 ], "date_end": "2008-03", "date_start": "2004-07", "rigorosum": "2008-04-11", "supervisor": [ 166 ], "research_areas": [ "IllVis" ], "keywords": [ "volume rendering", "illustrative visualization" ], "weblinks": [], "files": [ { "description": "High-resolution version for printing", "filetitle": "print version", "main_file": false, "use_in_gallery": false, "access": "public", "name": "bruckner-2008-IIV-print version.pdf", "type": "application/pdf", "size": 77521619, "path": "Publication:bruckner-2008-IIV", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/bruckner-2008-IIV/bruckner-2008-IIV-print version.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/bruckner-2008-IIV/bruckner-2008-IIV-print version:thumb{{size}}.png" }, { "description": "Low-resolution version for screen viewing", "filetitle": "screen version", "main_file": true, "use_in_gallery": false, "access": "public", "name": "bruckner-2008-IIV-screen version.pdf", "type": "application/pdf", "size": 16108841, "path": "Publication:bruckner-2008-IIV", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/bruckner-2008-IIV/bruckner-2008-IIV-screen version.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/bruckner-2008-IIV/bruckner-2008-IIV-screen version:thumb{{size}}.png" }, { "description": "Illustrative visualization results", "filetitle": "Teaser", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1024, "image_height": 1024, "name": "bruckner-2008-IIV-Teaser.jpg", "type": "image/jpeg", "size": 566494, "path": "Publication:bruckner-2008-IIV", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/bruckner-2008-IIV/bruckner-2008-IIV-Teaser.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/bruckner-2008-IIV/bruckner-2008-IIV-Teaser:thumb{{size}}.png" } ], "projects_workgroups": [ "exvisation" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/bruckner-2008-IIV/", "__class": "Publication" }, { "id": "freiler-2008-ste", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Set Type Enabled Information Visualization", "date": "2008-03", "abstract": "Information Visualization is a research area in the \feld of computer graphics that deals\r\nwith visual representations of abstract and usually multidimensional data. This data can\r\norigin from questionnaires, elections, measurements or simulations. Apart from specialized\r\ntools, that are made for a special purpose, there are general purpose tools, that can be\r\nused to analyze many kinds of di\u000berent data.\r\nThese tools are made to handle di\u000berent data types, like numeric or categorical values,\r\nsome also support more advanced data types, like time series data or hierarchical data. In\r\nthis document, the data type set will be introduced into the general purpose visualization\r\ntool ComVis. A set is a collection of multiple elements, that can also be empty. In many\r\ncases, a dimension with the data type set can replace multiple categorical dimensions\r\nand make data analysis and exploration more e\u000ecient and complex datasets easier to\r\nunderstand.\r\nThis work will not only explain, how to use sets to explore datasets, but also introduce a\r\nnew specialized view based on a histogram view, that is dedicated to the use of sets. Of\r\ncourse, most of the already existing views have been modi\fed to use sets, otherwise the\r\nnewly added data type would be di\u000ecult to use either. Especially views that can display\r\nmultiple dimensions were a challenge, because they allow the user to mix sets with other\r\ndata types. Apart from the use of sets in various views, some additional topics are covered\r\nin this document. The conversion of existing categorical data is a very important feature,\r\nas well as a fast and e\u000ecient data structure. The existing methods for user interaction like\r\nbrushing and linked coordinated views have to work as expected for all supported data\r\ntypes.\r\nA set should not be seen as a new arti\fcial data type, that we have to convert existing\r\ndata to, but as the natural data type in many applications. Instead of introducing another\r\nconversion step for our data, we can avoid converting data with multiple related attributes\r\nto a range of categorical dimensions. Using sets is also an e\u000ecient way of dimension\r\nreduction, and can reduce the complexity of a dataset, as well as the amount of views\r\nneeded for exploration.\r\nAdditionally, there are some examples on how to take advantage of sets when analyzing a\r\nreal-world dataset. Some special features of this dataset as well as some erroneous entries\r\nare easier to \fnd by using sets and views that support them.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 865, "image_height": 567, "name": "freiler-2008-ste-image.jpg", "type": "image/jpeg", "size": 84464, "path": "Publication:freiler-2008-ste", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/freiler-2008-ste/freiler-2008-ste-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/freiler-2008-ste/freiler-2008-ste-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 758 ], "diploma_examina": "2008-03-11", "supervisor": [ 176, 235 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 865, "image_height": 567, "name": "freiler-2008-ste-image.jpg", "type": "image/jpeg", "size": 84464, "path": "Publication:freiler-2008-ste", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/freiler-2008-ste/freiler-2008-ste-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/freiler-2008-ste/freiler-2008-ste-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "freiler-2008-ste-paper.pdf", "type": "application/pdf", "size": 1741710, "path": "Publication:freiler-2008-ste", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/freiler-2008-ste/freiler-2008-ste-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/freiler-2008-ste/freiler-2008-ste-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/freiler-2008-ste/", "__class": "Publication" }, { "id": "suntinger-2008-tet", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "The Event Tunnel: Interactive Visualization of Complex Event Streams for Business Process Pattern Analysis", "date": "2008-03", "abstract": "", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 371, "image_height": 367, "name": "suntinger-2008-tet-image.jpg", "type": "image/jpeg", "size": 80550, "path": "Publication:suntinger-2008-tet", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/suntinger-2008-tet/suntinger-2008-tet-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/suntinger-2008-tet/suntinger-2008-tet-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 665, 666, 667, 166 ], "booktitle": "IEEE PacificVIS ", "date_from": "2008-03-04", "date_to": "2008-03-07", "isbn": "978-1-4244-1966-1", "lecturer": [ 665 ], "location": "Kyoto, Japan", "pages_from": "111", "pages_to": "118", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": false, "access": "public", "image_width": 371, "image_height": 367, "name": "suntinger-2008-tet-image.jpg", "type": "image/jpeg", "size": 80550, "path": "Publication:suntinger-2008-tet", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/suntinger-2008-tet/suntinger-2008-tet-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/suntinger-2008-tet/suntinger-2008-tet-image:thumb{{size}}.png" }, { "description": "", "filetitle": "pdf", "main_file": true, "use_in_gallery": false, "access": "public", "name": "suntinger-2008-tet-pdf.pdf", "type": "application/pdf", "size": 1969717, "path": "Publication:suntinger-2008-tet", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/suntinger-2008-tet/suntinger-2008-tet-pdf.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/suntinger-2008-tet/suntinger-2008-tet-pdf:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/suntinger-2008-tet/", "__class": "Publication" }, { "id": "termeer-2008-scmr", "type_id": "poster", "tu_id": null, "repositum_id": null, "title": "The Volumetric Bulls Eye Plot", "date": "2008-02", "abstract": "Introduction: The bull's eye plot is a commonly used schematic for the visualization of quantitative late enhancement cardiac MRI data. It gives an intuitive overview of the viability of the entire left ventricular myocardium in a single diagram. However, common implementations do not provide a continuous transition between slices and provide poor or no information about the exact location and transmurality of non-viable tissue.\r\nPurpose: We propose a novel visualization technique that relieves the drawbacks of the bull's eye plot but maintains its advantages. Our hypothesis is that our technique will enable a more accurate assessment of the relation between viable and non-viable myocardial tissue (scar).\r\nMethods: Short-axis late enhancement cardiac MRI acquisitions consist of 10-20 slices. We segment the left-ventricular myocardium in all slices using manually drawn contours on both the epicardium and the endocardium. The segmented myocardium is subsequently unfolded along the long axis and reformatted to form a thin cylinder (Figure 1a). In this process myocardial cross-sections are mapped to equidistant rings within this cylinder. The volumetric nature of the myocardium is preserved during the unfolding.\r\nA projection of the cylinder is generated using the technique of volume rendering (Figure 1b). The viewing direction in this projection is oriented from the apex towards the base of the ventricle. This makes the viewer perceive the endocardium to be behind the epicardium. This view is further augmented with the main coronary arteries extracted from a whole heart MRI scan (150 slices, SSFP). Furthermore, two dots indicating the points where the left and right-ventricular myocardial connect are added. A thin slab perpendicular to the long axis within the cylinder can be selected for exclusive rendering, providing a method of visualizing only epicardial or endocardial viability.\r\nTo investigate scar transmurality, the user can select a wedge-shaped region of interest. Figure 1c shows the transmurality of that region by projecting it from its side. The unfolding method is modified for this projection to compensate for distortions due to the shape of the selected region. Since the wall thickness may vary within the region of interest, lines indicating the minimum and maximum wall thickness in the selected region are displayed.\r\nResults: The long-axis projection provides a smooth overview of the viability due to the unfolding method that preserves the continuous, volumetric nature of the myocardium. This also causes the resolution of the diagram to increase when more slices are acquired. The additional context information (i.e., coronary arteries) allows for easier interpretation of the location of any scar. Due to the close relation to the bull's eye plot, we believe that clinical adoption will be easy. The transmurality view provides detailed information on the distribution of scar within the myocardium. The preservation of wall thickness allows for judgment of the location and extent of the scar in relation to healthy tissue.\r\nConclusion: Our novel volumetric bull's eye plot allows for a comprehensive assessment of viability and scar transmurality thanks to its continuous nature and the additional context information provided.\r\n", "authors_et_al": false, "substitute": null, "main_image": { "description": "Volumetric Bulls Eye Plot", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 964, "image_height": 959, "name": "termeer-2008-scmr-image.png", "type": "image/png", "size": 404646, "path": "Publication:termeer-2008-scmr", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/termeer-2008-scmr/termeer-2008-scmr-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/termeer-2008-scmr/termeer-2008-scmr-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 606, 647, 679, 459, 575, 166 ], "booktitle": "Abstracts of the 11th Annual SCMR Scientific Sessions – 2008", "date_from": "2008-02-08", "date_to": "2008-02-10", "event": "SCMR 2008", "journal": "Journal of Cardiovascular Magnetic Resonance", "location": "Los Angeles, California", "pages_from": "199", "pages_to": "200", "series": "1", "volume": "11", "research_areas": [], "keywords": [ "Viability", "Bulls Eye Plot", "Cardiac MRI" ], "weblinks": [], "files": [ { "description": "", "filetitle": "abstract", "main_file": true, "use_in_gallery": false, "access": "public", "name": "termeer-2008-scmr-abstract.pdf", "type": "application/pdf", "size": 1409096, "path": "Publication:termeer-2008-scmr", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/termeer-2008-scmr/termeer-2008-scmr-abstract.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/termeer-2008-scmr/termeer-2008-scmr-abstract:thumb{{size}}.png" }, { "description": "Volumetric Bulls Eye Plot", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 964, "image_height": 959, "name": "termeer-2008-scmr-image.png", "type": "image/png", "size": 404646, "path": "Publication:termeer-2008-scmr", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/termeer-2008-scmr/termeer-2008-scmr-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/termeer-2008-scmr/termeer-2008-scmr-image:thumb{{size}}.png" }, { "description": "", "filetitle": "poster", "main_file": true, "use_in_gallery": false, "access": "public", "name": "termeer-2008-scmr-poster.pdf", "type": "application/pdf", "size": 2309951, "path": "Publication:termeer-2008-scmr", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/termeer-2008-scmr/termeer-2008-scmr-poster.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/termeer-2008-scmr/termeer-2008-scmr-poster:thumb{{size}}.png" } ], "projects_workgroups": [ "COMRADE" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/termeer-2008-scmr/", "__class": "Publication" }, { "id": "WIMMER-2008-CAR", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "Current Advances in Real-Time Rendering", "date": "2008", "abstract": "This talk will give a brief summary of recent research activities in the field of real-time rendering conducted by the real-time rendering group at the Vienna University of Technology. Highlights are interactive procedural architecture, physically based tree animation and visibility culling.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 193 ], "date_from": "2008-07-07", "date_to": "2008-07-07", "event": "Graphics Lunch", "location": "ETH Zürich, Switzerland", "research_areas": [ "Rendering" ], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/WIMMER-2008-CAR/", "__class": "Publication" }, { "id": "WIMMER-2008-ART", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "Advances in Real-Time Rendering", "date": "2008", "abstract": "This talk will give a brief summary of recent research activities in the field of real-time rendering conducted by the real-time rendering group at the Vienna University of Technology. Highlights are interactive procedural architecture, physically based tree animation and visibility culling.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 193 ], "date_from": "2008-09-15", "date_to": "2008-09-15", "event": "INRIA Research Seminar", "location": "INRIA, Grenoble, France", "research_areas": [ "Rendering" ], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/WIMMER-2008-ART/", "__class": "Publication" }, { "id": "weber_2008_sh", "type_id": "studentproject", "tu_id": null, "repositum_id": null, "title": "Spherical Harmonics", "date": "2008", "abstract": "", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 743 ], "date_end": "2009-01", "date_start": "2008-09", "matrikelnr": "0526341", "supervisor": [ 567 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/weber_2008_sh/", "__class": "Publication" }, { "id": "Ahmed-2008-EGVE", "type_id": "poster", "tu_id": null, "repositum_id": null, "title": "An Approach to Interaction Interoperability for Distributed Virtual Environments", "date": "2008", "abstract": "We present a preliminary framework for interaction interoperability in distributed virtual environments. The goal\r\nis to allow each user to use a different input devices and interaction techniques and yet collaborate seamlessly. The\r\nframework adopts a service oriented architecture and use a knowledge base in the form of three ontologies. The\r\nontologies use Web Ontology Language (OWL) to describe input devices, interaction techniques and interaction\r\ntasks. In addition, two directories contain application and user profiles. An inference engine searches for the\r\nbest possible combination of input devices, interaction techniques and tasks. The resulting user’s mapping file\r\nis then accessed using the framework distributed web service. Two proof-of-concept framework implementations\r\ndemonstrate how to develop a new application and how to support a legacy application.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 743, "image_height": 639, "name": "Ahmed-2008-EGVE-image.png", "type": "image/png", "size": 266833, "path": "Publication:Ahmed-2008-EGVE", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Ahmed-2008-EGVE/Ahmed-2008-EGVE-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Ahmed-2008-EGVE/Ahmed-2008-EGVE-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 767, 581, 768, 235 ], "booktitle": "Short papers and posters proceedings of the EGVE 2008", "date_from": "2008-05-29", "date_to": "2008-05-30", "event": "Virtual Environments 2008", "location": "Eindhoven, Holland", "pages_from": "35", "pages_to": "38", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 743, "image_height": 639, "name": "Ahmed-2008-EGVE-image.png", "type": "image/png", "size": 266833, "path": "Publication:Ahmed-2008-EGVE", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Ahmed-2008-EGVE/Ahmed-2008-EGVE-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Ahmed-2008-EGVE/Ahmed-2008-EGVE-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Ahmed-2008-EGVE-paper.pdf", "type": "application/pdf", "size": 821904, "path": "Publication:Ahmed-2008-EGVE", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Ahmed-2008-EGVE/Ahmed-2008-EGVE-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Ahmed-2008-EGVE/Ahmed-2008-EGVE-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "VRVis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Ahmed-2008-EGVE/", "__class": "Publication" }, { "id": "ruiz-2008-SEV", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Similarity-based Exploded Views", "date": "2008", "abstract": "Exploded views are often used in illustration to overcome the problem of occlusion when depicting complex structures. In this paper, we propose a volume visualization technique inspired by exploded views that partitions the volume into a number of parallel slabs and shows them apart from each other. The thickness of slabs is driven by the similarity between partitions. We use an information-theoretic technique for the generation of exploded views. First, the algorithm identifies the viewpoint from which the structure is the highest. Then, the partition of the volume into the most informative slabs for exploding is obtained using two complementary similarity-based strategies. The number of slabs and the similarity parameter are freely adjustable by the user.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Similarity-Based Exploded View Rendering", "filetitle": "Image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 593, "image_height": 629, "name": "ruiz-2008-SEV-Image.jpg", "type": "image/jpeg", "size": 54063, "path": "Publication:ruiz-2008-SEV", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/ruiz-2008-SEV/ruiz-2008-SEV-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/ruiz-2008-SEV/ruiz-2008-SEV-Image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 741, 171, 742, 161, 608, 207 ], "booktitle": "Proceedings of Smart Graphics 2008", "lecturer": [ 608 ], "pages_from": "154", "pages_to": "165", "research_areas": [ "MedVis" ], "keywords": [ "volume visualization", "illustrative visualization", "exploded views" ], "weblinks": [], "files": [ { "description": "Similarity-Based Exploded View Rendering", "filetitle": "Image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 593, "image_height": 629, "name": "ruiz-2008-SEV-Image.jpg", "type": "image/jpeg", "size": 54063, "path": "Publication:ruiz-2008-SEV", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/ruiz-2008-SEV/ruiz-2008-SEV-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/ruiz-2008-SEV/ruiz-2008-SEV-Image:thumb{{size}}.png" }, { "description": null, "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "ruiz-2008-SEV-Paper.pdf", "type": "application/pdf", "size": 840611, "path": "Publication:ruiz-2008-SEV", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/ruiz-2008-SEV/ruiz-2008-SEV-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/ruiz-2008-SEV/ruiz-2008-SEV-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "exvisation" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/ruiz-2008-SEV/", "__class": "Publication" }, { "id": "ruiz-2008-OVR", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Obscurance-based Volume Rendering Framework", "date": "2008", "abstract": "Obscurances, from which ambient occlusion is a particular case, is a technology that produces natural-looking lighting effects in a faster way than global illumination. Its application in volume visualization is of special interest since it permits us to generate a high quality rendering at a low cost. In this paper, we propose an obscurance-based framework that allows us to obtain realistic and illustrative volume visualizations in an interactive manner. Obscurances can include color bleeding effects without additional cost. Moreover, we obtain a saliency map from the gradient of obscurances and we show its application to enhance volume visualization and to select the most salient views.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Obscurances-based Volume Rendering", "filetitle": "Image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 720, "image_height": 600, "name": "ruiz-2008-OVR-Image.jpg", "type": "image/jpeg", "size": 61553, "path": "Publication:ruiz-2008-OVR", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/ruiz-2008-OVR/ruiz-2008-OVR-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/ruiz-2008-OVR/ruiz-2008-OVR-Image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 741, 742, 171, 161, 608, 207 ], "booktitle": "Proceedings of Volume Graphics 2008", "lecturer": [ 207 ], "research_areas": [ "MedVis" ], "keywords": [ "volume rendering", "illustrative visualization", "ambient occlusion" ], "weblinks": [], "files": [ { "description": "Obscurances-based Volume Rendering", "filetitle": "Image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 720, "image_height": 600, "name": "ruiz-2008-OVR-Image.jpg", "type": "image/jpeg", "size": 61553, "path": "Publication:ruiz-2008-OVR", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/ruiz-2008-OVR/ruiz-2008-OVR-Image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/ruiz-2008-OVR/ruiz-2008-OVR-Image:thumb{{size}}.png" }, { "description": null, "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "ruiz-2008-OVR-Paper.pdf", "type": "application/pdf", "size": 2216201, "path": "Publication:ruiz-2008-OVR", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/ruiz-2008-OVR/ruiz-2008-OVR-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/ruiz-2008-OVR/ruiz-2008-OVR-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "exvisation" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/ruiz-2008-OVR/", "__class": "Publication" }, { "id": "WIMMER-2008-PVR", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "Precomputing Visibility for Real-Time Rendering of Large Scenes", "date": "2008", "abstract": "Visibility computation is an essential part of any real-time rendering pipeline for large scenes. Visibility can either be precomputed offline, which is a good strategy for static scenes, or calculated at runtime, which avoids precomputation and works well for dynamic scenes. In this presentation, I will cover the latest advances in both of these principal directions. For visibility precomputation, we have shown that sampling is superior to full geometric approaches for practical applications, due to its efficiency and robustness. For online visibility culling, we show how to make the best possible use of hardware occlusion queries without introducing latency and overhead.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 193 ], "date_from": "2008-05-30", "date_to": "2008-05-30", "event": "Graphical Visionday 2008", "location": "Kopenhagen, Denmark", "research_areas": [ "Rendering" ], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/WIMMER-2008-PVR/", "__class": "Publication" }, { "id": "ilcik-2008-sgfa", "type_id": "journalpaper_notalk", "tu_id": null, "repositum_id": null, "title": "A Semi-Global Approach to Interactive Visual Analysis of Multivariate Flow Simulation Data", "date": "2008", "abstract": "We introduce a framework for interactive visualization of global flow features in large unsteady 3D flow fields. It is based on selective visualization using dense precomputed integral lines (streamlines, path lines) linked together with all other data attributes. This way we are able to provide an uniform and interactive environment for custom feature specification and visualization of non-local data aspects. These are related to the long term flow behavior, thus their description using only local properties is not possible. We demonstrate the benefits of working with semi-global features by a simple strategy for recognition of recirculation zones within 3D vector fields, judging on a self-proximity measure of integral lines.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Illustration of local and global features combination.", "filetitle": "teaserimage", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 2200, "image_height": 750, "name": "ilcik-2008-sgfa-teaserimage.jpg", "type": "image/jpeg", "size": 284967, "path": "Publication:ilcik-2008-sgfa", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/ilcik-2008-sgfa/ilcik-2008-sgfa-teaserimage.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/ilcik-2008-sgfa/ilcik-2008-sgfa-teaserimage:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 1303 ], "issn": "1811-8992", "journal": "Computer Graphics & Geometry", "number": "3", "pages_from": "18", "pages_to": "35", "volume": "10", "research_areas": [], "keywords": [ "global features", "integral lines", "flow visualization", "recirculation" ], "weblinks": [], "files": [ { "description": "Visualization with help of integral lines selected by a recirculation criterion. The color represents temperature.", "filetitle": "image01", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 868, "image_height": 673, "name": "ilcik-2008-sgfa-image01.jpg", "type": "image/jpeg", "size": 144479, "path": "Publication:ilcik-2008-sgfa", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/ilcik-2008-sgfa/ilcik-2008-sgfa-image01.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/ilcik-2008-sgfa/ilcik-2008-sgfa-image01:thumb{{size}}.png" }, { "description": "A comparison of visual analysis layers: Direct, local and global. 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This technique is used to study the impact of different genes during morphogenesis. However this technique, also introduces artefacts which make it hard to use automatic or semi automatic segmentation algorithms. The topic of this internship was to reduce the artefacts in the images. 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Important\r\nis that the signal should not be sparse in the transformed domain. How many samples need to be\r\ntaken depend on the characteristics of the matrix and the signal.\r\nSeveral introductory texts, as well as a lot of reference material, can be found on\r\nhttp://www.dsp.ece.rice.edu/cs/.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1085, "image_height": 777, "name": "Gronde_2008-image.jpg", "type": "image/jpeg", "size": 207822, "path": "Publication:Gronde_2008", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Gronde_2008/Gronde_2008-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Gronde_2008/Gronde_2008-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 906 ], "supervisor": [ 636 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { 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300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Kogelnig_Philip-2008-OGC/Kogelnig_Philip-2008-OGC-OgreCollada:thumb{{size}}.png" } ], "projects_workgroups": [ "Treelumination" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Kogelnig_Philip-2008-OGC/", "__class": "Publication" }, { "id": "luksch_2008_asm", "type_id": "studentproject", "tu_id": null, "repositum_id": null, "title": "Pixel Accurate Shadows with Shadow Mapping", "date": "2008", "abstract": "High quality shadows generated by shadow mapping is still an\r\nextensive problem in realtime rendering. This work summarizes\r\nsome state-of-the-art techniques to achieve pixel accurate shadows\r\nand points out the various problems of generating artifact free shadows. Further a demo application has been implemented to compare the different techniques and experiment with alternative approaches.", "authors_et_al": false, "substitute": null, "main_image": { "description": "shadows in terrain scene", "filetitle": "terrain", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1280, "image_height": 1024, "name": "luksch_2008_asm-terrain.png", "type": "image/png", "size": 701972, "path": "Publication:luksch_2008_asm", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/luksch_2008_asm/luksch_2008_asm-terrain.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/luksch_2008_asm/luksch_2008_asm-terrain:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 659 ], "duration": "6 months", "matrikelnr": "0525392", "note": "1", "supervisor": [ 326 ], "research_areas": [], "keywords": [ "shadow mapping", "real time rendering" ], "weblinks": [], "files": [ { "description": "http://stud4.tuwien.ac.at/~e0525392/shadow/shadow.html", "filetitle": "application", "main_file": true, "use_in_gallery": false, "access": "public", "name": "luksch_2008_asm-application.rar", "type": "application/x-rar", "size": 36010481, "path": "Publication:luksch_2008_asm", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/luksch_2008_asm/luksch_2008_asm-application.rar", "thumb_image_sizes": [] }, { "description": "", "filetitle": "powerplant", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1280, "image_height": 1024, "name": "luksch_2008_asm-powerplant.png", "type": "image/png", "size": 1240215, "path": "Publication:luksch_2008_asm", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/luksch_2008_asm/luksch_2008_asm-powerplant.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/luksch_2008_asm/luksch_2008_asm-powerplant:thumb{{size}}.png" }, { "description": "", "filetitle": "powerplant2", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1280, "image_height": 1024, "name": "luksch_2008_asm-powerplant2.png", "type": "image/png", "size": 464337, "path": "Publication:luksch_2008_asm", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/luksch_2008_asm/luksch_2008_asm-powerplant2.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/luksch_2008_asm/luksch_2008_asm-powerplant2:thumb{{size}}.png" }, { "description": "shadows in terrain scene", "filetitle": "terrain", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1280, "image_height": 1024, "name": "luksch_2008_asm-terrain.png", "type": "image/png", "size": 701972, "path": "Publication:luksch_2008_asm", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/luksch_2008_asm/luksch_2008_asm-terrain.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/luksch_2008_asm/luksch_2008_asm-terrain:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/luksch_2008_asm/", "__class": "Publication" }, { "id": "Matkovic-2008-Bergen", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "Interactive Visual Steering – Our Experiences", "date": "2008", "abstract": "Interactive steering with visualization has\r\nbeen a central goal of the international visualization\r\nresearch community for twenty\r\nyears. Still, we rarely ever see it applied to\r\nreal-world problems. Here we describe our\r\nrecent experiences with a realization of a\r\ntightly coupled steering loop, integrating\r\nsimulation and interactive visual analysis in a\r\nprototyping environment for automotive\r\nindustry system design. Very positive feedback\r\nfrom domain experts proves the usefulness\r\nof the approach.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 235 ], "date_from": "2008-05-05", "event": "Visualization Seminar", "location": "Bergen, Norway", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [ "VRVis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Matkovic-2008-Bergen/", "__class": "Publication" }, { "id": "Matkovic-2008-med", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": " Interactive visual Analysis-Potential Aplications in Medicine", "date": "2008", "abstract": "", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 235 ], "date_from": "2008-02-22", "date_to": "2008-02-23", "event": "1st International Congress of Hemodynamic Monitoring", "location": "Zagreb Croatia", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [ "VRVis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Matkovic-2008-med/", "__class": "Publication" }, { "id": "Miklin-2009-Mig", "type_id": "otherreviewed", "tu_id": null, "repositum_id": null, "title": "Migrant Boat Mini Challenge Award: Simple and Effective Integrated Display Geo-Temporal Analysis of Migrant Boats", "date": "2008", "abstract": "We provide a description of the tools and techniques used in our\r\nanalysis of the VAST 2008 Challenge dealing with mass movement\r\nof persons departing Isla Del Sue˜no on boats for the United\r\nStates during 2005–2007. We used visual analytics to explore migration\r\npatterns, characterize the choice and evolution of landing\r\nsites, characterize the geographical patterns of interdictions and\r\ndetermine the successful landing rate. Our ComVis tool, in connection\r\nwith some helper applications and Google Earth, allowed us to explore geo-temporal characteristics of the data set and answer the challenge questions. The ComVis project file captures the visual analysis context and facilitates better collaboration among team members.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 1000, "image_height": 625, "name": "Miklin-2009-Mig-image.jpg", "type": "image/jpeg", "size": 53188, "path": "Publication:Miklin-2009-Mig", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Miklin-2009-Mig/Miklin-2009-Mig-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Miklin-2009-Mig/Miklin-2009-Mig-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 754, 755, 756, 757, 758, 235, 581 ], "booktitle": "Proceedings of IEEE VAST 2008 Symposium", "date_from": "2008-10-19", "date_to": "2008-10-24", "location": "Columbus, Ohio", "research_areas": [], "keywords": [ "geo-temporal data", "visual analytics" ], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": true, "use_in_gallery": true, "access": "public", "image_width": 1000, "image_height": 625, "name": "Miklin-2009-Mig-image.jpg", "type": "image/jpeg", "size": 53188, "path": "Publication:Miklin-2009-Mig", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Miklin-2009-Mig/Miklin-2009-Mig-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Miklin-2009-Mig/Miklin-2009-Mig-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Miklin-2009-Mig-paper.pdf", "type": "application/pdf", "size": 630785, "path": "Publication:Miklin-2009-Mig", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Miklin-2009-Mig/Miklin-2009-Mig-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Miklin-2009-Mig/Miklin-2009-Mig-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "VRVis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Miklin-2009-Mig/", "__class": "Publication" }, { "id": "purgathofer-2008-cgi", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "Illustrative Visualization of Volume Data", "date": "2008", "abstract": "Illustrations are essential for the effective communication of complex subjects. Their production, however, is a dicult and expensive task. In recent years, three-dimensional imaging has become a vital tool not\nonly in medical diagnosis and treatment planning, but also in many technical disciplines (e.g., material inspection), biology, and archeology. Modalities such as X-Ray Computed Tomography (CT) and Magnetic\nResonance Imaging (MRI) produce high-resolution volumetric scans on a daily basis. It seems counter-intuitive that even though such a wealth of data is available, the production of an illustration should still\nrequire a mainly manual and time-consuming process.\n\nThis talk describes methods for the computer-assisted generation of illustrations directly from volumetric data using advanced visualization techniques. The use of a direct volume illustration system is shown for this purpose. Instead of requiring an additional modeling step, this system allows the designer of an illustration to work directly on the measured data. Abstraction, a key component of traditional illustrations, is used in order to reduce visual clutter, emphasize important structures, and reveal hidden detail. Low-level abstraction techniques are concerned with the appearance of objects and allow exible artistic shading of structures in volumetric data sets. High-level abstraction techniques control which objects are visible. For this purpose, novel methods for the generation of ghosted and exploded views\nare explained.\n\nThe visualization techniques presented in this talk were developed and implemented by Stefan Bruckner and employ the features of current graphics hardware to achieve interactive performance. The resulting system allows the generation of expressive illustrations directly from volumetric data with applications in medical training, patient education, and scientic communication.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 190 ], "date_from": "2008-06-10", "event": "CGI - Computer Graphics International", "location": "Istanbul, Turkey", "research_areas": [ "IllVis" ], "keywords": [ "illustrative visualization" ], "weblinks": [], "files": [], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/purgathofer-2008-cgi/", "__class": "Publication" }, { "id": "purgathofer-2008-jsc", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "Speedup Concepts for \u000bRealtime Computer Graphics", "date": "2008", "abstract": "", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 190 ], "date_from": "2008-11-17", "event": "JSC08", "location": "Wien, Austria", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/purgathofer-2008-jsc/", "__class": "Publication" }, { "id": "purgathofer-2008-tai", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "Augmented Reality - Basics and Technology", "date": "2008", "abstract": "The talk will give an overview of Augmented Reality. In contrast to Virtual Reality which immerses the user into a completely artificial world, Augmented Reality leaves the user in the real world, thereby adding or enhancing details for some purpose. Applications are in medicine, in industrial maintenance, in navigation, in museums, and many more. Hardware devices used include see-through head mounted displays and augmented video signals, always including some sort of tracking of the user. The user interface design requires new techniques and variants. Augmented Reality enables collaborative work of people either at the same or at distant locations. Mobile Augmented Reality is based on advanced communication technology and lightweight devices. ", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 190 ], "date_from": "2008-05-31", "event": "AR-Conference", "location": "Kaoshung, Taiwan", "research_areas": [], "keywords": [ "augmented reality" ], "weblinks": [], "files": [], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/purgathofer-2008-tai/", "__class": "Publication" }, { "id": "purgathofer-2008-vrvis", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "Was tut eigentlich ein Universitätsprofessor?", "date": "2008", "abstract": "", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 190 ], "date_from": "2008-02-21", "event": "VRVis Forum", "location": "VRVis, Wien, Austria", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/purgathofer-2008-vrvis/", "__class": "Publication" }, { "id": "Radax2008", "type_id": "studentproject", "tu_id": null, "repositum_id": null, "title": "Animation Library", "date": "2008", "abstract": "", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 721 ], "supervisor": [ 452 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Radax2008/", "__class": "Publication" }, { "id": "Rau08", "type_id": "xmascard", "tu_id": null, "repositum_id": null, "title": "X-Mas 2008", "date": "2008", "abstract": "THE X-MAS MOSAIC\n\nThe mosaic of a Christmas tree on the front was created using images from our publication database:\nhttp://www.cg.tuwien.ac.at/research/publications/\n\nThe mosaic on the backside of the card consists of the Christmas cards of the previous 15 years and of this year’s motif.\n\nDAS WEIHNACHTSMOSAIK\n\nDas Mosaik auf der Vorderseite zeigt einen Weihnachtsbaum, der aus Bildern unserer Publikationsdatenbank zusammengesetzt ist:\nhttp://www.cg.tuwien.ac.at/research/publications/\n\nDas Mosaik auf der Rückseite setzt sich aus den Weihnachtskarten der vergangenen 15 Jahre und aus dem diesjährigen Motiv zusammen.", "authors_et_al": false, "substitute": null, "main_image": { "description": "X-Mas Card 2008 Frontpage", "filetitle": "X-Mas Card 2008 Frontpage", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 512, "image_height": 729, "name": "Rau08-X-Mas Card 2008 Frontpage.jpg", "type": "image/jpeg", "size": 131308, "path": "Publication:Rau08", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rau08/Rau08-X-Mas Card 2008 Frontpage.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rau08/Rau08-X-Mas Card 2008 Frontpage:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 488 ], "research_areas": [], "keywords": [], "weblinks": [], "files": { "0": { "description": "The X-Mas Card", "filetitle": "card", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Rau08-card.pdf", "type": "application/pdf", "size": 2077553, "path": "Publication:Rau08", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rau08/Rau08-card.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rau08/Rau08-card:thumb{{size}}.png" }, "2": { "description": "X-Mas Card 2008 Frontpage", "filetitle": "X-Mas Card 2008 Frontpage", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 512, "image_height": 729, "name": "Rau08-X-Mas Card 2008 Frontpage.jpg", "type": "image/jpeg", "size": 131308, "path": "Publication:Rau08", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rau08/Rau08-X-Mas Card 2008 Frontpage.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rau08/Rau08-X-Mas Card 2008 Frontpage:thumb{{size}}.png" } }, "projects_workgroups": [ "vis", "xmas" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rau08/", "__class": "Publication" }, { "id": "Rautek-2008-kav", "type_id": "misc", "tu_id": null, "repositum_id": null, "title": "Visual Abstractions and Interaction Metaphors for Knowledge Assisted Volume Visualization", "date": "2008", "abstract": "Extended abstract published at Knowledge-assisted Visualization Workshop (colocated with the IEEE Visualization 2008 conference): \r\n\r\nhttp://kav.cs.wright.edu/", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1105, "image_height": 814, "name": "Rautek-2008-kav-image.bmp", "type": "image/x-ms-bmp", "size": 2699278, "path": "Publication:Rautek-2008-kav", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-kav/Rautek-2008-kav-image.bmp", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-kav/Rautek-2008-kav-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 488, 171 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1105, "image_height": 814, "name": "Rautek-2008-kav-image.bmp", "type": "image/x-ms-bmp", "size": 2699278, "path": "Publication:Rautek-2008-kav", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-kav/Rautek-2008-kav-image.bmp", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-kav/Rautek-2008-kav-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Rautek-2008-kav-paper.pdf", "type": "application/pdf", "size": 763946, "path": "Publication:Rautek-2008-kav", "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-kav/Rautek-2008-kav-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-kav/Rautek-2008-kav-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "exvisation" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-kav/", "__class": "Publication" } ]