[ { "id": "Kanitsar-2003-Dem", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Demonstration of different segmentation and visualization techniques by means of a complex real world object exemplified by a Christmas tree", "date": "2003", "abstract": "", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 162, 164, 175, 184, 170, 166 ], "booktitle": "European Congress of Radiology", "lecturer": [ 162 ], "publisher": "ECR", "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "PDF", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Kanitsar-2003-Dem-PDF.pdf", "type": "application/pdf", "size": 10369, "path": "Publication:Kanitsar-2003-Dem", "url": "https://www.cg.tuwien.ac.at/research/publications/2003/Kanitsar-2003-Dem/Kanitsar-2003-Dem-PDF.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2003/Kanitsar-2003-Dem/Kanitsar-2003-Dem-PDF:thumb{{size}}.png" } ], "projects_workgroups": [ "ADAPT" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2003/Kanitsar-2003-Dem/", "__class": "Publication" }, { "id": "kanitsar-2002-Chr", "type_id": "techreport", "tu_id": null, "repositum_id": null, "title": "Christmas Tree Case Study: Computed Tomography as a Tool for Mastering Complex Real World Objects with Applications in Computer Graphics", "date": "2002-03", "abstract": "We report on using computed tomography (CT) as a model acquisition\ntool for complex objects in computer graphics. Unlike other modeling\nand scanning techniques the complexity of the object is irrelevant in\nCT, which naturally enables to model objects with, for example,\nconcavities, holes, twists or fine surface details. Once the data is\nscanned, one can apply post-processing techniques aimed at its further\nenhancement, modification or presentation. For demonstration purposes\nwe chose to scan a Christmas tree which exhibits high complexity which\nis difficult or even impossible to handle with other\ntechniques. However, care has to be taken to achieve good scanning\nresults with CT. Further, we illustrate the post-processing by means\nof data segmentation and photorealistic as well as non-photorealistic\n\t\t surface and volume rendering techniques.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 162, 175, 184, 170, 459, 233, 187, 188, 172, 165, 189, 164, 190, 166 ], "number": "TR-186-2-02-07", "pages_from": "1", "pages_to": "4", "research_areas": [], "keywords": [ "volume visualization", "computed tomography", "modeling" ], "weblinks": [], "files": [ { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "kanitsar-2002-Chr-paper.pdf", "type": "application/pdf", "size": 2000473, "path": "Publication:kanitsar-2002-Chr", "url": "https://www.cg.tuwien.ac.at/research/publications/2002/kanitsar-2002-Chr/kanitsar-2002-Chr-paper.pdf", "thumb_image_sizes": [] } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2002/kanitsar-2002-Chr/", "__class": "Publication" }, { "id": "Csebfalvi-2001-NPVR", "type_id": "techreport", "tu_id": null, "repositum_id": null, "title": "Fast Visualization of Object Contours by Non-Photorealistic Volume Rendering", "date": "2001-04", "abstract": "In this paper we present a fast visualization technique for\nvolumetric data, which is based on a recent non-photorealistic\nrendering technique. Our new approach enables alternative\ninsights into 3D data sets (compared to traditional approaches\nsuch as direct volume rendering or iso-surface rendering).\nObject contours, which usually are characterized by locally high\ngradient values, are visualized regardless of their density values.\nCumbersome tuning of transfer functions, as usually needed for setting\nup DVR views is avoided. Instead, a small number of parameters is available to adjust the non-photorealistic display.\nBased on the magnitude of local gradient information as well as on\nthe angle between viewing direction and gradient vector, data values\nare mapped to visual properties (color, opacity), which then are\ncombined to form the rendered image (MIP is proposed as the default\ncompositing stragtegy here). Due to the fast implementation of this\nalternative rendering approach, it is possible to interactively\ninvestigate the 3D data, and quickly learn about internal structures.\nSeveral further extensions of our new approach, such as level lines\n are also presented in this paper.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 233, 184, 176, 197, 166 ], "number": "TR-186-2-01-09", "pages_from": "1", "pages_to": "9", "research_areas": [], "keywords": [ "shear-warp projection", "non-photorealistic rendering", "interactive volume rendering" ], "weblinks": [], "files": [ { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Csebfalvi-2001-NPVR-paper.gz", "type": "application/octet-stream", "size": 2683199, "path": "Publication:Csebfalvi-2001-NPVR", "url": "https://www.cg.tuwien.ac.at/research/publications/2001/Csebfalvi-2001-NPVR/Csebfalvi-2001-NPVR-paper.gz", "thumb_image_sizes": [] } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2001/Csebfalvi-2001-NPVR/", "__class": "Publication" }, { "id": "Mroz-thesis", "type_id": "phdthesis", "tu_id": null, "repositum_id": null, "title": "Real-Time Volume Visualization on Low-End Hardware", "date": "2001", "abstract": "", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 184 ], "date_end": "2001-05", "date_start": "1997-07", "supervisor": [ 166 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [ { "description": "", "filetitle": "pdf", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Mroz-thesis-pdf.pdf", "type": "application/pdf", "size": 11931195, "path": "Publication:Mroz-thesis", "url": "https://www.cg.tuwien.ac.at/research/publications/2001/Mroz-thesis/Mroz-thesis-pdf.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2001/Mroz-thesis/Mroz-thesis-pdf:thumb{{size}}.png" } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2001/Mroz-thesis/", "__class": "Publication" }, { "id": "Csebfalvi-2001-Fas", "type_id": "misc", "tu_id": null, "repositum_id": null, "title": "Fast Visualization of Object Contours by Non-Photorealistic Volume Rendering", "date": "2001", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 166, 176, 184, 197, 233 ], "note": "Proceedings of Eurographics 2001, 4-7 September 2001, Manchester, United Kingdom", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2001/Csebfalvi-2001-Fas/", "__class": "Publication" }, { "id": "Mroz-2000-MasX", "type_id": "techreport", "tu_id": null, "repositum_id": null, "title": "Mastering Interactive Surface Rendering for Java-Based\nDiagnostic Applications", "date": "2000-04", "abstract": "The display of iso-surfaces in medical data sets is an\nimportant visualization\ntechnique used by radiologists for the diagnosis of volumetric density\ndata sets. The demands put by radiologists on such a display\ntechnique are interactivity, multiple stacked transparent surfaces and\ncutting planes that allow an interactive clipping of the\nsurfaces. This paper presents a Java based, platform independent\nimplementation of a very fast surface rendering algorithm which\ncombines the advantages of explicit surface representation, splatting,\nand\nshear-warp projection to fulfill all these requirements. The algorithm\nis\nimplemented within the context of J-Vision, an application for viewing\nand\ndiagnosing medical images which is currently in use at various\nhospitals.\n", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 184, 165, 166 ], "number": "TR-186-2-00-10", "pages_from": "1", "pages_to": "4", "research_areas": [], "keywords": [ "medical applications", "surface rendering", "volume visualization" ], "weblinks": [], "files": [ { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Mroz-2000-MasX-paper.gz", "type": "application/octet-stream", "size": 434839, "path": "Publication:Mroz-2000-MasX", "url": "https://www.cg.tuwien.ac.at/research/publications/2000/Mroz-2000-MasX/Mroz-2000-MasX-paper.gz", "thumb_image_sizes": [] } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2000/Mroz-2000-MasX/", "__class": "Publication" }, { "id": "Hauser-2000-TwoX", "type_id": "techreport", "tu_id": null, "repositum_id": null, "title": "Two-level volume rendering - fusing MIP and DVR", "date": "2000-04", "abstract": "In this paper we present a two-level approach for\nfusing direct\nvolume rendering (DVR) and maximum-intensity projection (MIP)\nwithin a joint rendering method.\nDifferent structures within the data-set are rendered locally by\neither MIP or DVR on an object-by-object basis. Globally all the\nresults of subsequent object renderings are combined in a merging step\n(usually compositing in our case). This allows to selectively\nchoose the most\nsuitable technique for depicting each object\nwithin the data, while keeping the amount of information contained in\nthe image at a reasonable level.\nThis is especially useful when inner\nstructures should be visualized together with semi-transparent outer\nparts, similar to the focus-and-context approach known\nfrom information visualization. We also present an implementation of our\n\napproach, which allows to explore volumetric data using\ntwo-level rendering at interactive frame rates.\n", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 176, 184, 385, 166 ], "number": "TR-186-2-00-11", "pages_from": "1", "pages_to": "8", "research_areas": [], "keywords": [ "dynamical systems", "interactive visualization", "maximum intensity projection", "direct volume rendering" ], "weblinks": [], "files": [ { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Hauser-2000-TwoX-paper.gz", "type": "application/octet-stream", "size": 4077931, "path": "Publication:Hauser-2000-TwoX", "url": "https://www.cg.tuwien.ac.at/research/publications/2000/Hauser-2000-TwoX/Hauser-2000-TwoX-paper.gz", "thumb_image_sizes": [] } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2000/Hauser-2000-TwoX/", "__class": "Publication" }, { "id": "Hauser-2000-Two", "type_id": "misc", "tu_id": null, "repositum_id": null, "title": "Two-level volume rendereing - fusing MIP and DVR", "date": "2000", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 166, 176, 184, 385 ], "note": "IEEE Visualization 2000 Proceedings, 2000, pp. 211-218. Revised version will be published in IEEE Transactions on Computer Graphics and Visualization", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2000/Hauser-2000-Two/", "__class": "Publication" }, { "id": "Mroz-2000-Rea", "type_id": "misc", "tu_id": null, "repositum_id": null, "title": "Real-Time Maximum Intensity Projection", "date": "2000", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 166, 184, 197 ], "note": "In E. Gröller, H. Löffelmann, B. Ribarsky (eds.), Data Visualization'99, Springer Wien, pp. 135-144. Revised version \"Maximum Intensity Projection at Warp Speed\" in the Journal Computers & Graphics, 24(3), June 2000, pp. 343-352", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2000/Mroz-2000-Rea/", "__class": "Publication" }, { "id": "Mroz-2000-Mas", "type_id": "misc", "tu_id": null, "repositum_id": null, "title": "Mastering Interactive Surface Rendering for Java-Based Diagnostic Applications", "date": "2000", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 165, 166, 184 ], "note": "IEEE Visualization 2000 Proceedings, 2000, pp. 437-440", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2000/Mroz-2000-Mas/", "__class": "Publication" }, { "id": "Mroz-2000-Int", "type_id": "misc", "tu_id": null, "repositum_id": null, "title": "Interactive High-Quality Maximum Intensity Projection", "date": "2000", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 166, 176, 184 ], "note": "Computer Graphics Forum 19(3), 2000, pp. C-341 - C-350", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2000/Mroz-2000-Int/", "__class": "Publication" }, { "id": "Mroz-1999-IHQ", "type_id": "techreport", "tu_id": null, "repositum_id": null, "title": "Interactive High-Quality Maximum Intensity Projection", "date": "1999-12", "abstract": "Maximum Intensity Projection (MIP) is a volume\nrendering technique\nwhich is used to visualize high-intensity structures within volumetric\ndata. At each pixel the highest data value, which is encountered along a\n\ncorresponding viewing ray is depicted. MIP is, for example, commonly\nused to\nextract vascular structures from medical data sets (angiography). Due\nto lack of depth information in MIP images, animation or interactive\nvariation of viewing parameters is frequently used for\ninvestigation. Up to now no MIP algorithms exist which are of both\ninteractive speed and high quality.\nIn this paper we present a high-quality MIP algorithm (trilinear\ninterpolation within cells), which is up to 50 times faster than\nbrute-force MIP and at least 20 times faster than comparable optimized\ntechniques. This speed-up is accomplished by using an alternative\nstorage scheme for volume cells (sorted by value) and by removing\ncells which do not contribute to any MIP projection (regardless of the\nviewing direction) in a preprocessing step. Also, a fast maximum\nestimation within cells is used to further speed up the algorithm.\n", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 184, 176, 166 ], "number": "TR-186-2-99-25", "pages_from": "1", "pages_to": "10", "research_areas": [], "keywords": [ "trilinear interpolation", "angiography", "maximum intensity projection", "volume visualization" ], "weblinks": [], "files": [ { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Mroz-1999-IHQ-paper.gz", "type": "application/octet-stream", "size": 477219, "path": "Publication:Mroz-1999-IHQ", "url": "https://www.cg.tuwien.ac.at/research/publications/1999/Mroz-1999-IHQ/Mroz-1999-IHQ-paper.gz", "thumb_image_sizes": [] } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/1999/Mroz-1999-IHQ/", "__class": "Publication" }, { "id": "Mroz-1999-MIP", "type_id": "techreport", "tu_id": null, "repositum_id": null, "title": "Maximum Intensity Projection at Warp Speed", "date": "1999-12", "abstract": "Maximum Intensity Projection (MIP) is a volume\nrendering technique\nwhich is used to extract high-intensity structures from volumetric\nscalar data. At\neach pixel the highest data value encountered along the\ncorresponding viewing ray is determined. MIP is commonly used to\nextract vascular\nstructures from medical MRI data sets, i.e., angiography. The usual way\nto\ncompensate for the loss of spatial and occlusion information in MIP\nimages\nis to view the data from different view points by rotating them. As the\ngeneration of a MIP is usually non-interactive, this is done by\ncalculating\nmultiple images offline and playing them back as an animation.\n\nIn this paper a novel algorithm is proposed which is capable of\ninteractively\ngenerating Maximum Intensity Projection images even on low-end\nhardware using parallel\nprojection. Two methods for preprocessing data and removing voxels\nwhich will due to their neighborhood never contribute\nto a MIP are discussed. The remaining voxels are stored in\na way which guarantees\noptimal cache coherency regardless of the viewing direction. For use\non low-end hardware, a preview-mode is included which renders only the\nmore significant parts of the volume during user interaction.\nFurthermore\nwe demonstrate the usability of our data\nstructure for extensions of the MIP technique like MIP with\ndepth-shading and Local Maximum Intensity Projection (LMIP).", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 184, 197, 166 ], "number": "TR-186-2-99-24", "pages_from": "1", "pages_to": "16", "research_areas": [], "keywords": [ "real-time rendering", "maximum intensity projection", "volume visualization" ], "weblinks": [], "files": [ { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Mroz-1999-MIP-paper.gz", "type": "application/octet-stream", "size": 495097, "path": "Publication:Mroz-1999-MIP", "url": "https://www.cg.tuwien.ac.at/research/publications/1999/Mroz-1999-MIP/Mroz-1999-MIP-paper.gz", "thumb_image_sizes": [] } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/1999/Mroz-1999-MIP/", "__class": "Publication" }, { "id": "Mroz-1999-Adv", "type_id": "techreport", "tu_id": null, "repositum_id": null, "title": "Advanced High-Quality Maximum Intensity Projection for Volume Visualization", "date": "1999-04", "abstract": "Maximum Intensity Projection (MIP) is a volume\nrendering technique\nwhich is used to extract high-intensity structures from volumetric data.\nAt\neach pixel the highest data value encountered along the\ncorresponding viewing ray is determined. MIP is commonly used to\nextract vascular\nstructures from medical MRI data sets (angiography). Due to lack of\ndepth information in MIP images, animation of the viewpoint is\nfrequently used for viewing. Although\ninteractive MIP algorithms exist, the quality of the results is\nmoderate. The generation of high-quality MIP animation loops is\ncomputationally expensive with rendering times of several seconds per\nframe.\nIn this paper we present a fast algorithm for high-quality MIP.\nCells of the data set\nwhich will never contribute to a MIP due to their neighborhood are\nremoved during a preprocessing\nstep. The remaining cells are stored in a way which improves cache\ncoherency\nindependent of the viewing direction and minimizes the number of\nrequired maximum evaluations.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 184, 399, 166 ], "number": "TR-186-2-99-10", "pages_from": "1", "pages_to": "8", "research_areas": [], "keywords": [ "angiography", "Maximum Intensity Projection", "Volume Visualization" ], "weblinks": [], "files": [ { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Mroz-1999-Adv-paper.gz", "type": "application/octet-stream", "size": 873394, "path": "Publication:Mroz-1999-Adv", "url": "https://www.cg.tuwien.ac.at/research/publications/1999/Mroz-1999-Adv/Mroz-1999-Adv-paper.gz", "thumb_image_sizes": [] } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/1999/Mroz-1999-Adv/", "__class": "Publication" }, { "id": "Mroz-1999-ReaX", "type_id": "techreport", "tu_id": null, "repositum_id": null, "title": "Real-Time Maximum Intensity Projection", "date": "1999-04", "abstract": "Maximum Intensity Projection (MIP) is a volume\nrendering technique\nwhich is used to extract high-intensity structures from volumetric data.\nAt\neach pixel the highest data value encountered along the\ncorresponding viewing ray is determined. MIP is commonly used to\nextract vascular\nstructures from medical MRI data sets (angiography). The usual way to\ncompensate for the loss of spatial and occlusion information in MIP\nimages\nis to view the data from different view points by rotating them. As the\ngeneration of MIP is usually non-interactive, this is done by\ncalculating\nmultiple images offline and playing them back as an animation.\n\nIn this paper a new algorithm is proposed which is capable of\ninteractively\ngenerating Maximum Intensity Projection images using parallel\nprojection and templates. Voxels of the data set\nwhich will never contribute to a MIP due to their neighborhood are\nremoved during a preprocessing\nstep. The remaining voxels are stored in a way which guarantees\noptimal cache coherency regardless of the viewing direction. For use\non low-end hardware, a preview-mode is included which renders only\nmore significant parts of the volume during user interaction.\nFurthermore\nwe demonstrate the usability of our data\nstructure for extensions of the MIP technique like MIP with\ndepth-shading and Local Maximum Intensity Projection (LMIP).", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 184, 197, 166 ], "number": "TR-186-2-99-09", "pages_from": "1", "pages_to": "10", "research_areas": [], "keywords": [ "angiography", "Maximum Intensity Projection", "Volume Visualization" ], "weblinks": [], "files": [ { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Mroz-1999-ReaX-paper.gz", "type": "application/octet-stream", "size": 166639, "path": "Publication:Mroz-1999-ReaX", "url": "https://www.cg.tuwien.ac.at/research/publications/1999/Mroz-1999-ReaX/Mroz-1999-ReaX-paper.gz", "thumb_image_sizes": [] } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/1999/Mroz-1999-ReaX/", "__class": "Publication" }, { "id": "Mroz-1999-Rea", "type_id": "misc", "tu_id": null, "repositum_id": null, "title": "Real Time Maximum Intensity Projection.", "date": "1999", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 184 ], "note": "Data Visualization'99 - proceedings of the joint Eurographics IEEE TCCG symposium on visualization", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/1999/Mroz-1999-Rea/", "__class": "Publication" }, { "id": "Mroz-1999-Real", "type_id": "misc", "tu_id": null, "repositum_id": null, "title": "Real-Time Maximum Intensity Projection.", "date": "1999", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 166, 184, 197 ], "note": "E.Gröller, H. Löffelmann, B. Ribarsky (eds.), 
Data Visualization'99, Springer Wien, pp.135-144. Revised version \"Maximum Intensity Projection at Warp Speed\" to be published in the Journal Computers & Graphics, June 2000.", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/1999/Mroz-1999-Real/", "__class": "Publication" }, { "id": "Mroz-1998-SelX", "type_id": "techreport", "tu_id": null, "repositum_id": null, "title": "Selected Trends in Scientific Visualization", "date": "1998-04", "abstract": "Visualization became an important branch of scientific\nresearch during the past decade. Some topics of visualization, e.g., flow\nvisualization and volume visualization, already\nprovide lots of high-quality solutions to the most important\nproblems. Others such as information visualization, are rather\nyoung disciplines which continuously provide lots of new\nadvances. One such topic is the visualization over the Internet.\nQuite a number of approaches emerged during the last two years\nwhich facilitate this idea and embed the World Wide Web into the\nvisualization process. Another trend in visualization is\ncollaborative visualization within an augmented reality setup.\nUsers exploit real 3D interaction and augmented\nreality to combine\ncommunication and investigation during research or education.\nThirdly, the visualization of multi-dimensional and multi-modal\ndata is a rather hot challenge to current scientific research.\nCoping with the restriction of just a few dimensions for\nrepresenting visualization results is a big open problem in\nvisualization and currently subject to eager research.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 184, 399, 166 ], "number": "TR-186-2-98-15", "pages_from": "1", "pages_to": "8", "research_areas": [], "keywords": [ "augmented reality,information visualizat", "web technologies", "Visualization" ], "weblinks": [], "files": [ { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Mroz-1998-SelX-paper.gz", "type": "application/octet-stream", "size": 1274065, "path": "Publication:Mroz-1998-SelX", "url": "https://www.cg.tuwien.ac.at/research/publications/1998/Mroz-1998-SelX/Mroz-1998-SelX-paper.gz", "thumb_image_sizes": [] } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/1998/Mroz-1998-SelX/", "__class": "Publication" }, { "id": "Mroz-1998-Bri", "type_id": "techreport", "tu_id": null, "repositum_id": null, "title": "Bringing Your Visualization Application to the Internet", "date": "1998-04", "abstract": "The Internet has a growing importance as a medium for\npresenting\nvisualization and offering visualization tools. Due to strong\nvariations in the quality of avaliable resources it is extremely\ndifficult to design visualization systems including the Internet, which\nare capable of interactively\nvisualizing user data. In this paper we identify requirements for\na distributed visualization system to interactively visualize user data.\nAs a possible solution to the identified problems we\npresent a model for a visualization pipeline capable of fulfilling these\nrequirements. Finally a proof-of-concept implementation of our ideas\ninto Net Phase Plane, a visualization tool for dynamical systems, is\ndiscussed.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 184, 399, 166 ], "number": "TR-186-2-98-14", "pages_from": "1", "pages_to": "8", "research_areas": [], "keywords": [ "interactivity", "visualization over the internet" ], "weblinks": [], "files": [ { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Mroz-1998-Bri-paper.gz", "type": "application/octet-stream", "size": 46564, "path": "Publication:Mroz-1998-Bri", "url": "https://www.cg.tuwien.ac.at/research/publications/1998/Mroz-1998-Bri/Mroz-1998-Bri-paper.gz", "thumb_image_sizes": [] } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/1998/Mroz-1998-Bri/", "__class": "Publication" }, { "id": "Mroz-1998-Sel", "type_id": "misc", "tu_id": null, "repositum_id": null, "title": "Selected Trends in Scientific Visualization", "date": "1998", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 166, 184, 399 ], "note": "Invited Paper in Proceedings of Spring Conference on Computer Graphics 1998 (SCCG'98), Budmerice, Slovakia, April 23.-25., 1998, pp. 17-26.", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/1998/Mroz-1998-Sel/", "__class": "Publication" }, { "id": "Fischel-1998-Cas", "type_id": "misc", "tu_id": null, "repositum_id": null, "title": "Case study: Visualizing Various Properties of Dynamical Systems", "date": "1998", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 166, 184, 212, 399, 416 ], "note": "In 6th International Workshop on Digital Image Processing and Computer Graphics (DIP-97): Applications in Humanities and Natural Sciences, Emanuel Wenger, Leonid I. Dimitrov, Editors, Proceedings of SPIE vol 3346, pp. 146-154, (1998).", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/1998/Fischel-1998-Cas/", "__class": "Publication" }, { "id": "Fischel-1997-CSVVP", "type_id": "techreport", "tu_id": null, "repositum_id": null, "title": "Case study: Visualizing Various Properties of\n\t\t Dynamical Systems", "date": "1997-09", "abstract": "There is a wide range of visualization techniques for\ndynamical systems. These methods are used to visualize certain\nproperties as, e.g., stability of fixed points, characteristic changes\nof velocity, and bifurcations. This paper gives a short introduction\nto dynamical systems and describes several visualization\ntechniques. Some of those are applied to three different dynamical\nsystems. The application of different visualization methods to\ndynamical systems shows, how scientific visualization can be used for\nanalyzing the behavior of dynamical systems, and how visualization can\n make analysis of a dynamical system fast and efficient.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 416, 212, 184, 399, 166 ], "number": "TR-186-2-97-16", "pages_from": "1", "pages_to": "10", "research_areas": [], "keywords": [ "" ], "weblinks": [], "files": [ { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Fischel-1997-CSVVP-paper.gz", "type": "application/octet-stream", "size": 1848646, "path": "Publication:Fischel-1997-CSVVP", "url": "https://www.cg.tuwien.ac.at/research/publications/1997/Fischel-1997-CSVVP/Fischel-1997-CSVVP-paper.gz", "thumb_image_sizes": [] } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/1997/Fischel-1997-CSVVP/", "__class": "Publication" }, { "id": "Loeffelmann-1997-HSV", "type_id": "techreport", "tu_id": null, "repositum_id": null, "title": "Hierarchical Streamarrows for the Visualization of\n Dynamical Systems", "date": "1997-01", "abstract": "Streamarrows are a technique to enhance the use of\nstreamsurfaces by separating arrow-shaped portions from the\nremaining streamsurface. We present a hierarchical streamarrows\nalgorithm as an extension to this technique: Streamarrows are\nlocally chosen from a stack of scaled streamarrows textures to\navoid too big or small streamarrows in the rendered image. We\nfurthermore present techniques how streamarrows can be extended\ninto 3D, namely perpendicular to the streamsurface: streamarrows\ncan be shifted slightly out of the streamsurface. Another\nextension in this category is to represent the outline of\nstreamarrows as 3D tubes. We show a set of images which have been\n rendered using this technique and report about ongoing research.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 399, 184, 166 ], "number": "TR-186-2-97-02", "pages_from": "1", "pages_to": "13", "research_areas": [], "keywords": [ "streamsurfaces", "visualization", "dynamical systems" ], "weblinks": [], "files": [ { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Loeffelmann-1997-HSV-paper.gz", "type": "application/octet-stream", "size": 2587496, "path": "Publication:Loeffelmann-1997-HSV", "url": "https://www.cg.tuwien.ac.at/research/publications/1997/Loeffelmann-1997-HSV/Loeffelmann-1997-HSV-paper.gz", "thumb_image_sizes": [] } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/1997/Loeffelmann-1997-HSV/", "__class": "Publication" }, { "id": "loeffelmann-1996-SVM", "type_id": "techreport", "tu_id": null, "repositum_id": null, "title": "Streamarrows: Visualizing Multiple Layers of\n Streamsurfaces", "date": "1996-04", "abstract": "Occlusion is a crucial spatial cue for the human visual\nsystem. Painters as well as researchers in the field of\ncomputer graphics have been dealing with this aspect for a\nlong time. In the field of visualization occlusion can be\nespecially problematic. We present a new approach to\ndealing with streamsurfaces that occlude major parts of the\nsystem representation. Analyzing mixed-mode oscillations,\nwhich are a special class of analytically defined dynamical\nsystems, we came across geometrically complex streamsurfaces\nwith curly shape. Certain regions of these surfaces, that\nare necessary to describe the behavior of the system,\nocclude major parts of the model. We combined and adopted\nseveral visualization techniques to deal with this problem.\nStreamarrows, which are semi-transparent portions of the\nstreamsurface, allow the viewer to see through and diminish\nthe problem of occlusion. Cross-sections and the removal\nof certain portions of the model reduce occlusion as well\nand thus improve visual perception. Choosing the shape of\nan arrow for segmentation allows to visualize even more\ninformation at the streamsurface, e.g., the direction of\nthe flow. An anisotropic spot noise texture is further\nused to emphasize flow within a streamsurface. Finally\nanimation techniques were applied to facilitate the\ninterpretation of dynamical systems with complex shaped\n streamsurfaces.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 399, 184, 166, 190 ], "number": "TR-186-2-96-12", "pages_from": "1", "pages_to": "13", "research_areas": [], "keywords": [ "flow visualization", "streamsurfaces", "complex dynamical systems", "mixed-mode oscillations" ], "weblinks": [], "files": [ { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "loeffelmann-1996-SVM-paper.gz", "type": "application/octet-stream", "size": 630255, "path": "Publication:loeffelmann-1996-SVM", "url": "https://www.cg.tuwien.ac.at/research/publications/1996/loeffelmann-1996-SVM/loeffelmann-1996-SVM-paper.gz", "thumb_image_sizes": [] } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/1996/loeffelmann-1996-SVM/", "__class": "Publication" } ]