[ { "id": "muigg-2012-svr", "type_id": "phdthesis", "tu_id": null, "repositum_id": null, "title": "Scalability for Volume Rendering and Information Visualization Approaches in the Context of Scientific Data", "date": "2012", "abstract": "Data from numerical simulations that model physical processes has to be explored and analyzed\r\nin a broad range of different fields of research and development. Besides data mining and statistics,\r\nvisualization is among the most important methods that grant domain experts insight into\r\ntheir complex simulation results. In order to keep up with ongoing improvements of simulation\r\nmethods as well as ever increasing amounts of data, state-of-the-art visualization techniques\r\nhave to be scalable with respect to many different properties. Many numerical models rely on\r\na domain decomposition defined by a volumetric grid. Finer grids yield more accurate simulation\r\nresults at the cost of longer computing times. The wide availability of high-performance\r\ncomputing resources has resulted in increasingly detailed data sets. The first volume rendering\r\napproach that is presented in this thesis uses bricking and resampling to cope with such high\r\nresolution data. Important regions of the simulated volume are visualized in as much detail as\r\npossible whereas lower resolution representations are used for less important portions of a data\r\nset. This allows for interactive frame rates even when dealing with the highly detailed grids\r\nthat are used by state-of-the-art simulation models. Grid resolution, however, is only one aspect\r\nthat has increased due to the ongoing development of numerical methods. Grid complexity has\r\nincreased as well. While initial simulation techniques have required simple tetrahedral meshes\r\ncurrent methods can cope with polyhedral cells that allow for increased solver efficiency and\r\nsimulation accuracy. The second volume visualization algorithm that is presented in this thesis\r\nis scalable with respect to grid complexity since it is capable of directly visualizing data defined\r\non grids which comprise polyhedral cells. Raycasting is performed by using a novel data structure\r\nthat allows for easy grid traversal while retaining a very compact memory footprint. Both\r\naforementioned volume rendering techniques utilize the massively parallel computing resources\r\nthat are provided by modern graphics processing units.\r\nMany information visualization methods are designed to explore and analyze abstract data\r\nthat is often high dimensional. Since improvements in the field of numerical modelling have led\r\nto simulation data sets that contain a large number of physical attributes the application of techniques\r\nfrom the field of information visualization can provide additional important information\r\nto domain experts. However, in order to apply information visualization methods to scientific\r\ndata such as numerical simulation results, additional scalability issues have to be addressed.\r\nThis thesis introduces multiple methods that can be used to reduce cluttering and overdrawing\r\nproblems for line-based techniques such as phase-space diagrams, parallel coordinates and a\r\nnovel time-series visualization. The trajectories of important trends in the data are illustrated by\r\nblurring a noise texture along them. A novel coloring scheme is used to provide visual linking-information across multiple visualizations in a multi-view framework. The proposed approaches\r\nare primarily image-based which makes them very scalable with respect to data set sizes.\r\nThe usefulness and real-world applicability of the techniques that are introduced in this\r\nthesis is demonstrated in a case study. A complex computational fluid dynamics data set, which\r\ncontains several simulated breathing cycles within the human upper respiratory tract, is analyzed.\r\nThe exploration of the data has yielded several hypothesis that are of importance to an ENT\r\nspecialist. Many of the techniques presented in this work have also been used in the context of\r\nadditional collaborations in a multitude of fields such as medicine, climatology, meteorology,\r\nand engineering.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1262, "image_height": 1608, "name": "muigg-2012-svr-image.jpg", "type": "image/jpeg", "size": 1573603, "path": "Publication:muigg-2012-svr", "url": "https://www.cg.tuwien.ac.at/research/publications/2012/muigg-2012-svr/muigg-2012-svr-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2012/muigg-2012-svr/muigg-2012-svr-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 662 ], "date_end": "2012", "date_start": "2007", "reviewer_1": [ 166 ], "reviewer_2": [ 226 ], "rigorosum": "2012-06-15", "supervisor": [ 166 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1262, "image_height": 1608, "name": "muigg-2012-svr-image.jpg", "type": "image/jpeg", "size": 1573603, "path": "Publication:muigg-2012-svr", "url": "https://www.cg.tuwien.ac.at/research/publications/2012/muigg-2012-svr/muigg-2012-svr-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2012/muigg-2012-svr/muigg-2012-svr-image:thumb{{size}}.png" }, { "description": "", "filetitle": "Thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "muigg-2012-svr-Thesis.pdf", "type": "application/pdf", "size": 43185667, "path": "Publication:muigg-2012-svr", "url": "https://www.cg.tuwien.ac.at/research/publications/2012/muigg-2012-svr/muigg-2012-svr-Thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2012/muigg-2012-svr/muigg-2012-svr-Thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2012/muigg-2012-svr/", "__class": "Publication" }, { "id": "muigg-2011-gpg", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Interactive Volume Visualization of General Polyhedral Grids", "date": "2011-12", "abstract": "This paper presents a novel framework for visualizing volumetric data specified on complex polyhedral grids, without the\r\nneed to perform any kind of a priori tetrahedralization. These grids are composed of polyhedra that often are non-convex and have\r\nan arbitrary number of faces, where the faces can be non-planar with an arbitrary number of vertices. The importance of such grids\r\nin state-of-the-art simulation packages is increasing rapidly. We propose a very compact, face-based data structure for representing\r\nsuch meshes for visualization, called two-sided face sequence lists (TSFSL), as well as an algorithm for direct GPU-based ray-casting\r\nusing this representation. The TSFSL data structure is able to represent the entire mesh topology in a 1D TSFSL data array of face\r\nrecords, which facilitates the use of efficient 1D texture accesses for visualization. In order to scale to large data sizes, we employ a\r\nmesh decomposition into bricks that can be handled independently, where each brick is then composed of its own TSFSL array. This\r\nbricking enables memory savings and performance improvements for large meshes. We illustrate the feasibility of our approach with\r\nreal-world application results, by visualizing highly complex polyhedral data from commercial state-of-the-art simulation packages.", "authors_et_al": false, "substitute": null, "main_image": { "description": "This exhaust manifold data set is defined on a polyhedral grid. The zoom-in shows the underlying mesh structure", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1330, "image_height": 790, "name": "muigg-2011-gpg-image.png", "type": "image/png", "size": 721800, "path": "Publication:muigg-2011-gpg", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 662, 226, 212, 166 ], "date_from": "2011-10-23", "date_to": "2011-10-28", "event": "IEEE VisWeek 2011", "issn": "1077 - 2626", "journal": "IEEE Transaction on Visualization and Computer Graphics", "lecturer": [ 662 ], "location": "Providence, RI, USA", "number": "12", "pages_from": "2115", "pages_to": "2124", "volume": "17", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "fast forward slides", "filetitle": "fastforward", "main_file": false, "use_in_gallery": false, "access": "public", "name": "muigg-2011-gpg-fastforward.ppt", "type": "", "size": 3621376, "path": "Publication:muigg-2011-gpg", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-fastforward.ppt", "thumb_image_sizes": [] }, { "description": "This exhaust manifold data set is defined on a polyhedral grid. The zoom-in shows the underlying mesh structure", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1330, "image_height": 790, "name": "muigg-2011-gpg-image.png", "type": "image/png", "size": 721800, "path": "Publication:muigg-2011-gpg", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-image:thumb{{size}}.png" }, { "description": "", "filetitle": "paper", "main_file": false, "use_in_gallery": false, "access": "public", "name": "muigg-2011-gpg-paper.pdf", "type": "application/pdf", "size": 464488, "path": "Publication:muigg-2011-gpg", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-paper:thumb{{size}}.png" }, { "description": "presentationslides", "filetitle": "slides", "main_file": false, "use_in_gallery": false, "access": "public", "name": "muigg-2011-gpg-slides.ppt", "type": "", "size": 11790336, "path": "Publication:muigg-2011-gpg", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-slides.ppt", "thumb_image_sizes": [] }, { "description": "video demonstration", "filetitle": "video", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 1024, "preview_image_height": 768, "name": "muigg-2011-gpg-video.avi", "type": "video/x-msvideo", "size": 15131960, "path": "Publication:muigg-2011-gpg", "preview_name": "muigg-2011-gpg-video:preview.png", "preview_type": "image/jpeg", "preview_size": 49261, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-video.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-video:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/muigg-2011-gpg-video:video.mp4" } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/muigg-2011-gpg/", "__class": "Publication" }, { "id": "kehrer-2011-vai", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Interactive Visual Analysis of Heterogeneous Scientific Data across an Interface", "date": "2011-07", "abstract": "In this paper, we present a systematic approach to the interactive visual exploration and analysis of heterogeneous scientific\r\ndata. Based on a setup of coordinated multiple views (with linking and brushing) and heterogeneous data which consists of two blocks\r\nof scientific data (e.g., 2D and 3D data), we enable the joint, feature-based investigation across an interface. The interface specifies\r\n(a) which items in the one part of the data are related to which items in the other part, and vice versa, (b) how selections (in terms\r\nof feature extraction) are transferred between the two parts of the data, and (c) how interaction is realized during the visual analysis.\r\nWe also propose strategies for visual analysis across an interface resulting in interactive and iterative refinement of features specified\r\nin different parts of the data. We demonstrate the usefulness of our approach in the context of two visual analysis scenarios with\r\nheterogeneous scientific data, i.e., a multi-run climate simulation and a complex simulation of fluid-structure interaction.", "authors_et_al": false, "substitute": null, "main_image": { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1053, "image_height": 1000, "name": "kehrer-2011-vai-image.jpg", "type": "image/jpeg", "size": 242521, "path": "Publication:kehrer-2011-vai", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/kehrer-2011-vai/kehrer-2011-vai-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/kehrer-2011-vai/kehrer-2011-vai-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 983, 662, 212, 176 ], "date_from": "2011-10-23", "date_to": "2011-10-28", "event": "IEEE VisWeek 2011", "issn": "1077-2626", "journal": "IEEE Transaction on Visualization and Computer Graphics", "lecturer": [ 983 ], "location": "Providence, RI", "number": "7", "pages_from": "934", "pages_to": "946", "volume": "17", "research_areas": [], "keywords": [], "weblinks": [ { "href": "http://www.ii.uib.no/vis/publications/publication/2011/kehrer11heterogeneous", "caption": null, "description": null, "main_file": 0 } ], "files": [ { "description": "", "filetitle": "Draft", "main_file": true, "use_in_gallery": false, "access": "public", "name": "kehrer-2011-vai-Draft.pdf", "type": "application/pdf", "size": 5299107, "path": "Publication:kehrer-2011-vai", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/kehrer-2011-vai/kehrer-2011-vai-Draft.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/kehrer-2011-vai/kehrer-2011-vai-Draft:thumb{{size}}.png" }, { "description": "", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1053, "image_height": 1000, "name": "kehrer-2011-vai-image.jpg", "type": "image/jpeg", "size": 242521, "path": "Publication:kehrer-2011-vai", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/kehrer-2011-vai/kehrer-2011-vai-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/kehrer-2011-vai/kehrer-2011-vai-image:thumb{{size}}.png" }, { "description": "", "filetitle": "Slides", "main_file": true, "use_in_gallery": false, "access": "public", "name": "kehrer-2011-vai-Slides.pdf", "type": "application/pdf", "size": 2413196, "path": "Publication:kehrer-2011-vai", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/kehrer-2011-vai/kehrer-2011-vai-Slides.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/kehrer-2011-vai/kehrer-2011-vai-Slides:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/kehrer-2011-vai/", "__class": "Publication" }, { "id": "Muigg_2011_VC", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Visual Coherence for Large-Scale Line-Plot Visualizations", "date": "2011-06", "abstract": "Displaying a large number of lines within a limited amount of screen space is a task that is common to many\r\ndifferent classes of visualization techniques such as time-series visualizations, parallel coordinates, link-node diagrams,\r\nand phase-space diagrams. This paper addresses the challenging problems of cluttering and overdraw\r\ninherent to such visualizations. We generate a 2x2 tensor field during line rasterization that encodes the distribution\r\nof line orientations through each image pixel. Anisotropic diffusion of a noise texture is then used to generate\r\na dense, coherent visualization of line orientation. In order to represent features of different scales, we employ a\r\nmulti-resolution representation of the tensor field. The resulting technique can easily be applied to a wide variety\r\nof line-based visualizations. We demonstrate this for parallel coordinates, a time-series visualization, and a\r\nphase-space diagram. Furthermore, we demonstrate how to integrate a focus+context approach by incorporating\r\na second tensor field. Our approach achieves interactive rendering performance for large data sets containing\r\nmillions of data items, due to its image-based nature and ease of implementation on GPUs. Simulation results\r\nfrom computational fluid dynamics are used to evaluate the performance and usefulness of the proposed method.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 662, 226, 212, 166 ], "booktitle": "Computer Graphics Forum", "date_from": "2011-05-31", "date_to": "2011-06-03", "event": "EuroVis 2011", "issn": "0167-7055", "journal": "Computer Graphics Forum", "lecturer": [ 662 ], "location": "Bergen, Norway", "number": "3", "organization": "The Eurographics Association and Blackwell Publishing Ltd.", "pages_from": "643", "pages_to": "652", "publisher": "Blackwell Publishing", "volume": "30", "research_areas": [], "keywords": [], "weblinks": [ { "href": "http://onlinelibrary.wiley.com/doi/10.1111/j.1467-8659.2011.01913.x/abstract", "caption": null, "description": null, "main_file": 0 } ], "files": [ { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Muigg_2011_VC-Paper.pdf", "type": "application/pdf", "size": 1396935, "path": "Publication:Muigg_2011_VC", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Muigg_2011_VC/Muigg_2011_VC-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Muigg_2011_VC/Muigg_2011_VC-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Muigg_2011_VC/", "__class": "Publication" }, { "id": "Muigg_2011_ISI", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Interactive Seismic Interpretation with Piecewise Global Energy Minimization", "date": "2011-03", "abstract": "Increasing demands in world-wide energy consumption and oil depletion\r\nof large reservoirs have resulted in the need for exploring\r\nsmaller and more complex oil reservoirs. Planning of the reservoir\r\nvalorization usually starts with creating a model of the subsurface\r\nstructures, including seismic faults and horizons. However, seismic\r\ninterpretation and horizon tracing is a difficult and error-prone task,\r\noften resulting in hours of work needing to be manually repeated.\r\nIn this paper, we propose a novel, interactive workflow for horizon\r\ninterpretation based on well positions, which include additional geological\r\nand geophysical data captured by actual drillings. Instead\r\nof interpreting the volume slice-by-slice in 2D, we propose 3D seismic\r\ninterpretation based on well positions. We introduce a combination\r\nof 2D and 3D minimal cost path and minimal cost surface\r\ntracing for extracting horizons with very little user input. By processing\r\nthe volume based on well positions rather than slice-based,\r\nwe are able to create a piecewise optimal horizon surface at interactive\r\nrates. We have integrated our system into a visual analysis\r\nplatform which supports multiple linked views for fast verification,\r\nexploration and analysis of the extracted horizons. The system is\r\ncurrently being evaluated by our collaborating domain experts.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 963, 818, 947, 662, 212, 964, 226 ], "booktitle": "Proceedings of IEEE Pacific Visualization 2011", "date_from": "2011-03-01", "date_to": "2011-03-04", "isbn": " 978-1-61284-935-5 ", "lecturer": [ 963 ], "location": "Hong Kong", "organization": "The 4th IEEE Pacific Visualization Symposium (PacificVis 2011)", "pages_from": "59", "pages_to": "66", "publisher": "IEEE Pacific Visualization 2011", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Muigg_2011_ISI-Paper.pdf", "type": "application/pdf", "size": 6377696, "path": "Publication:Muigg_2011_ISI", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Muigg_2011_ISI/Muigg_2011_ISI-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/Muigg_2011_ISI/Muigg_2011_ISI-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "vis" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/Muigg_2011_ISI/", "__class": "Publication" }, { "id": "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": "Buerger-2007-cmv", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Interactive cross-detector analysis of vortical flow data", "date": "2007", "abstract": "In this paper we discuss the application of multiple\r\nlinked views for advanced vortex investigation in flow data. Local\r\nfeature detectors and additional measures integrate into an\r\ninteractive flow feature detection system based on multiple linked\r\nviews. We discuss how linking and brushing of derived feature\r\ninformation can lead to increased performance in interactive feature\r\nanalysis. In a case study we demonstrate how the possibility to\r\nintegrate the information of multiple detectors leads to sound\r\nunderstanding of vortex type features. Enhanced credibility and\r\ncombined advantages of several detectors can be achieved by uniting\r\nthe results of multiple feature detectors in multiple coordinated\r\nviews.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Multiple views and smooth brushing for vortex analysis", "filetitle": "Figure1", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1978, "image_height": 1028, "name": "Buerger-2007-cmv-Figure1.png", "type": "image/png", "size": 441549, "path": "Publication:Buerger-2007-cmv", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure1.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure1:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 661, 662, 212, 176 ], "booktitle": "Proceedings of CMV 2007", "lecturer": [ 661 ], "pages_from": "98", "pages_to": "110", "publisher": "IEEE", "research_areas": [], "keywords": [ "Multiple Views", "Vortex", "Flow Visualization", "Multiple Detectors" ], "weblinks": [], "files": [ { "description": "Multiple views and smooth brushing for vortex analysis", "filetitle": "Figure1", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1978, "image_height": 1028, "name": "Buerger-2007-cmv-Figure1.png", "type": "image/png", "size": 441549, "path": "Publication:Buerger-2007-cmv", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure1.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure1:thumb{{size}}.png" }, { "description": "Combining multiple detectors using linked views", "filetitle": "Figure2", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 2000, "image_height": 855, "name": "Buerger-2007-cmv-Figure2.png", "type": "image/png", "size": 123363, "path": "Publication:Buerger-2007-cmv", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure2.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure2:thumb{{size}}.png" }, { "description": "PQ-Plot", "filetitle": "Figure3", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 2000, "image_height": 739, "name": "Buerger-2007-cmv-Figure3.png", "type": "image/png", "size": 567462, "path": "Publication:Buerger-2007-cmv", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure3.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure3:thumb{{size}}.png" }, { "description": "Correlating several detectors", "filetitle": "Figure4", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1981, "image_height": 900, "name": "Buerger-2007-cmv-Figure4.png", "type": "image/png", "size": 763819, "path": "Publication:Buerger-2007-cmv", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure4.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure4:thumb{{size}}.png" }, { "description": "Feature localization analysis", "filetitle": "Figure5", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1995, "image_height": 887, "name": "Buerger-2007-cmv-Figure5.png", "type": "image/png", "size": 851641, "path": "Publication:Buerger-2007-cmv", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure5.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure5:thumb{{size}}.png" }, { "description": "Analysis of the tumbling motion inside the combustion chamber", "filetitle": "Figure6", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 2000, "image_height": 666, "name": "Buerger-2007-cmv-Figure6.png", "type": "image/png", "size": 458780, "path": "Publication:Buerger-2007-cmv", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure6.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure6:thumb{{size}}.png" }, { "description": "Further investigation of optimal mixing", "filetitle": "Figure7", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 2000, "image_height": 662, "name": "Buerger-2007-cmv-Figure7.png", "type": "image/png", "size": 383182, "path": "Publication:Buerger-2007-cmv", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure7.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure7:thumb{{size}}.png" }, { "description": "Analysis of gasket vortices", "filetitle": "Figure8", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 2661, "image_height": 942, "name": "Buerger-2007-cmv-Figure8.png", "type": "image/png", "size": 1044524, "path": "Publication:Buerger-2007-cmv", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure8.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure8:thumb{{size}}.png" }, { "description": "Interactive comparision of two vortices", "filetitle": "Figure9", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 2604, "image_height": 935, "name": "Buerger-2007-cmv-Figure9.png", "type": "image/png", "size": 459481, "path": "Publication:Buerger-2007-cmv", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure9.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Figure9:thumb{{size}}.png" }, { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Buerger-2007-cmv-Paper.pdf", "type": "application/pdf", "size": 1446532, "path": "Publication:Buerger-2007-cmv", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/Buerger-2007-cmv-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "PVG" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-cmv/", "__class": "Publication" }, { "id": "Buerger-2007-eurovis", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Integrating Local Feature Detectors in the Interactive Visual Analysis of Flow Simulation Data", "date": "2007", "abstract": "We present smooth formulations of common vortex detectors that allow\r\na seamless integration into the concept of interactive visual\r\nanalysis of flow simulation data. We express the originally binary\r\nfeature detectors as fuzzy-sets that can be combined using the\r\nlinking and brushing concepts of interactive visual analysis. Both\r\ninteraction and visualization gain from having multiple detectors\r\nconcurrently available and from the ability to combine them. An\r\napplication study on automotive data reveals how these vortex\r\ndetectors combine and perform in praxis.", "authors_et_al": false, "substitute": null, "main_image": { "description": "A glyph based visualization of flow through a cooling jacket. The design of the casket causes a strong vortex that increases mixing of hot and cold fluid.", "filetitle": "Vortex", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 800, "image_height": 535, "name": "Buerger-2007-eurovis-Vortex.jpg", "type": "image/jpeg", "size": 83021, "path": "Publication:Buerger-2007-eurovis", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-eurovis/Buerger-2007-eurovis-Vortex.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-eurovis/Buerger-2007-eurovis-Vortex:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 661, 662, 1303, 212, 176 ], "booktitle": "Proceedings of Eurographics/ IEEE-VGTC Symposium on Visualization 2007", "editor": "K. Museth, T. Möller, A. Ynnerman", "isbn": "9783905673456", "lecturer": [ 661 ], "pages_from": "171", "pages_to": "178", "research_areas": [], "keywords": [ "Interactive visual analysis", "Fuzzy classifier", "Vortex detector", "Cooling jacket" ], "weblinks": [], "files": [ { "description": "Combination of smooth featrue detectors and interactive visual analysis", "filetitle": "Figure1", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 6575, "image_height": 2346, "name": "Buerger-2007-eurovis-Figure1.png", "type": "image/png", "size": 1225837, "path": "Publication:Buerger-2007-eurovis", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-eurovis/Buerger-2007-eurovis-Figure1.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-eurovis/Buerger-2007-eurovis-Figure1:thumb{{size}}.png" }, { "description": "Major components of flow through the cooling jacket", "filetitle": "Figure2", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 680, "image_height": 452, "name": "Buerger-2007-eurovis-Figure2.jpg", "type": "image/jpeg", "size": 44965, "path": "Publication:Buerger-2007-eurovis", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-eurovis/Buerger-2007-eurovis-Figure2.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-eurovis/Buerger-2007-eurovis-Figure2:thumb{{size}}.png" }, { "description": "A feature based focus+context visualizaion showing regions of near stagnant, hot flow with medium to high levels of the lambda2 vortex detector", "filetitle": "Figure3", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 3756, "image_height": 1275, "name": "Buerger-2007-eurovis-Figure3.png", "type": "image/png", "size": 1512644, "path": "Publication:Buerger-2007-eurovis", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-eurovis/Buerger-2007-eurovis-Figure3.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-eurovis/Buerger-2007-eurovis-Figure3:thumb{{size}}.png" }, { "description": "Turbulent region behind cooling jacket gasket", "filetitle": "Figure4", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 3693, "image_height": 1250, "name": "Buerger-2007-eurovis-Figure4.png", "type": "image/png", "size": 1989001, "path": "Publication:Buerger-2007-eurovis", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-eurovis/Buerger-2007-eurovis-Figure4.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-eurovis/Buerger-2007-eurovis-Figure4:thumb{{size}}.png" }, { "description": "", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Buerger-2007-eurovis-Paper.pdf", "type": "application/pdf", "size": 799517, "path": "Publication:Buerger-2007-eurovis", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-eurovis/Buerger-2007-eurovis-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-eurovis/Buerger-2007-eurovis-Paper:thumb{{size}}.png" }, { "description": "Presentation given at EuroVis07 Conference", "filetitle": "Presentation", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Buerger-2007-eurovis-Presentation.pdf", "type": "application/pdf", "size": 3151315, "path": "Publication:Buerger-2007-eurovis", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-eurovis/Buerger-2007-eurovis-Presentation.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-eurovis/Buerger-2007-eurovis-Presentation:thumb{{size}}.png" }, { "description": "This video shows basic ideas and results and demonstrates the interactiveness of the approach.", "filetitle": "Video", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Buerger-2007-eurovis-Video.avi", "type": "", "size": 9312914, "path": "Publication:Buerger-2007-eurovis", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-eurovis/Buerger-2007-eurovis-Video.avi", "thumb_image_sizes": [] }, { "description": "A glyph based visualization of flow through a cooling jacket. The design of the casket causes a strong vortex that increases mixing of hot and cold fluid.", "filetitle": "Vortex", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 800, "image_height": 535, "name": "Buerger-2007-eurovis-Vortex.jpg", "type": "image/jpeg", "size": 83021, "path": "Publication:Buerger-2007-eurovis", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-eurovis/Buerger-2007-eurovis-Vortex.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-eurovis/Buerger-2007-eurovis-Vortex:thumb{{size}}.png" } ], "projects_workgroups": [ "PVG" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2007/Buerger-2007-eurovis/", "__class": "Publication" } ]