[ { "id": "pr10", "type_id": "masterthesis", "tu_id": null, "repositum_id": null, "title": "Interactive Curved Reflections in Large Point Clouds", "date": "2010-05", "abstract": "In the field of real-time rendering, computer graphics observes a continuously growing power of visualizing of scenes of continuously growing complexity. In the past few years, a number of rendering techniques have been developed that let the quality of the rendered images converge towards photorealism. Especially in the field of realistic scene illumination, Global Illumination (GI) techniques represent an important field of research. Previous to this work, for the first time we have applied a GI algorithm also to point clouds, which enables us to achieve realistic illumination of diffuse and glossy objects in real-time. This thesis elevates the power of visualization of this GI-Renderer to the next level. For the first time, it implements a realistic, physically based rendering of mirroring surfaces also for point clouds. Current real-time approaches addressing curved mirroring surfaces in polygon scenes either are extremely imprecise or cannot handle each arbitrary type of surface. Especially concave surfaces represent a significant difficulty for current physically based methods. Up to now, physically correct mirror reflections on complex surfaces can only be produced by offline algorithms.\r\nWe introduce a novel rendering technique called \"Screen-space curved reflections\", which enables us to produce physically correct mirror reflections on arbitrarily complex surfaces. Our method bases on the approach, for each point in the scene to find the pixel in the framebuffer that contains its reflecting surface point. This is achieved by the application of a fast 2D root finding in a new error function called \"mirror-space error function\". Although our method raises high demands on the hardware, we are able to render common scenes at interactive frame rates.", "authors_et_al": false, "substitute": null, "main_image": { "description": "mirroring Stanford Bunny point cloud rendered with SSCR", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 399, "image_height": 360, "name": "pr10-image.png", "type": "image/png", "size": 257065, "path": "Publication:pr10", "url": "https://www.cg.tuwien.ac.at/research/publications/2010/pr10/pr10-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2010/pr10/pr10-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 799 ], "supervisor": [ 193 ], "research_areas": [], "keywords": [ "mirror space", "interactive reflections", "curved mirrors", "point clouds" ], "weblinks": [], "files": [ { "description": "mirroring Stanford Bunny point cloud rendered with SSCR", "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 399, "image_height": 360, "name": "pr10-image.png", "type": "image/png", "size": 257065, "path": "Publication:pr10", "url": "https://www.cg.tuwien.ac.at/research/publications/2010/pr10/pr10-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2010/pr10/pr10-image:thumb{{size}}.png" }, { "description": "", "filetitle": "poster", "main_file": true, "use_in_gallery": false, "access": "public", "name": "pr10-poster.pdf", "type": "application/pdf", "size": 1047526, "path": "Publication:pr10", "url": "https://www.cg.tuwien.ac.at/research/publications/2010/pr10/pr10-poster.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2010/pr10/pr10-poster:thumb{{size}}.png" }, { "description": "", "filetitle": "thesis", "main_file": true, "use_in_gallery": false, "access": "public", "name": "pr10-thesis.pdf", "type": "application/pdf", "size": 13005654, "path": "Publication:pr10", "url": "https://www.cg.tuwien.ac.at/research/publications/2010/pr10/pr10-thesis.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2010/pr10/pr10-thesis:thumb{{size}}.png" } ], "projects_workgroups": [ "Scanopy" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2010/pr10/", "__class": "Publication" }, { "id": "preiner_2010_GIPC", "type_id": "journalpaper_notalk", "tu_id": null, "repositum_id": null, "title": "Real-Time Global Illumination for Point Cloud Scenes", "date": "2010", "abstract": "In this paper we present a real-time global illumination approach for illuminating scenes containing large point clouds. Our approach is based on the distribution of Virtual Point Lights (VPLs) in the scene, which are then used for the indirect illumination of the visible surfaces, using Imperfect Shadow Maps for visibility calculation of the VPLs. We are able to render multiple indirect light bounces, where each light bounce accounts for the transport of both the diffuse and the specular fraction of the reflected light.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 831, "image_height": 551, "name": "preiner_2010_GIPC-image.png", "type": "image/png", "size": 322383, "path": "Publication:preiner_2010_GIPC", "url": "https://www.cg.tuwien.ac.at/research/publications/2010/preiner_2010_GIPC/preiner_2010_GIPC-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2010/preiner_2010_GIPC/preiner_2010_GIPC-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 799, 193 ], "journal": "Computer Graphics & Geometry", "number": "1", "pages_from": "2", "pages_to": "16", "volume": "12", "research_areas": [ "Rendering" ], "keywords": [ "virtual point lights", "imperfect shadow maps", "point rendering", "point clouds", "global illumination", "VPL", "ISM" ], "weblinks": [ { "href": "http://www.cgg-journal.com/2010-1/02.htm", "caption": null, "description": null, "main_file": 0 } ], "files": [ { "description": null, "filetitle": "algorithm", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1684, "image_height": 950, "name": "preiner_2010_GIPC-algorithm.png", "type": "image/png", "size": 1001756, "path": "Publication:preiner_2010_GIPC", "url": "https://www.cg.tuwien.ac.at/research/publications/2010/preiner_2010_GIPC/preiner_2010_GIPC-algorithm.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2010/preiner_2010_GIPC/preiner_2010_GIPC-algorithm:thumb{{size}}.png" }, { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 831, "image_height": 551, "name": "preiner_2010_GIPC-image.png", "type": "image/png", "size": 322383, "path": "Publication:preiner_2010_GIPC", "url": "https://www.cg.tuwien.ac.at/research/publications/2010/preiner_2010_GIPC/preiner_2010_GIPC-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2010/preiner_2010_GIPC/preiner_2010_GIPC-image:thumb{{size}}.png" }, { "description": null, "filetitle": "shots", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 2136, "image_height": 478, "name": "preiner_2010_GIPC-shots.png", "type": "image/png", "size": 993581, "path": "Publication:preiner_2010_GIPC", "url": "https://www.cg.tuwien.ac.at/research/publications/2010/preiner_2010_GIPC/preiner_2010_GIPC-shots.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2010/preiner_2010_GIPC/preiner_2010_GIPC-shots:thumb{{size}}.png" } ], "projects_workgroups": [ "Scanopy" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2010/preiner_2010_GIPC/", "__class": "Publication" }, { "id": "SCHEIBLAUER-2009-IDCE", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Interactive Domitilla Catacomb Exploration", "date": "2009-09", "abstract": "In this paper we present an approach for interactive visualization and manipulation of huge point clouds. Archaeological monuments like the Domitilla Catacomb in Rome lead to data sets surpassing 1 Billion points or 20GB of storage space, which makes standard techniques like mesh conversion or in-core point-based rendering infeasible. Our system uses an out-of-core octree structure and a number of interactive editing tools to enable many archaeological tasks to be carried out on the whole point cloud that would not be possible using traditional methods. We allow fast selection, insertion and deletion of points, and through out-of-core rendering, the frame rate always stays above 20 frames per second on a fast workstation. \nTo the best of our knowledge, this is the first interactive visualization of the complete data set of a large subterranean catacomb, and we show that direct point cloud visualization on the complete data set of a scan campaign is an important tool in archaeological practice.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1600, "image_height": 1076, "name": "SCHEIBLAUER-2009-IDCE-image.jpg", "type": "image/jpeg", "size": 269202, "path": "Publication:SCHEIBLAUER-2009-IDCE", "url": "https://www.cg.tuwien.ac.at/research/publications/2009/SCHEIBLAUER-2009-IDCE/SCHEIBLAUER-2009-IDCE-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2009/SCHEIBLAUER-2009-IDCE/SCHEIBLAUER-2009-IDCE-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 614, 826, 193 ], "booktitle": "10th VAST International Symposium on Virtual Reality, Archaeology and Cultural Heritage (VAST09)", "date_from": "2009-09-22", "date_to": "2009-09-25", "isbn": "978-3-905674-18-7", "lecturer": [ 614, 826 ], "location": "Malta", "pages_from": "65", "pages_to": "72", "publisher": "Eurographics Association", "research_areas": [ "Geometry" ], "keywords": [], "weblinks": [], "files": [ { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1600, "image_height": 1076, "name": "SCHEIBLAUER-2009-IDCE-image.jpg", "type": "image/jpeg", "size": 269202, "path": "Publication:SCHEIBLAUER-2009-IDCE", "url": "https://www.cg.tuwien.ac.at/research/publications/2009/SCHEIBLAUER-2009-IDCE/SCHEIBLAUER-2009-IDCE-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2009/SCHEIBLAUER-2009-IDCE/SCHEIBLAUER-2009-IDCE-image:thumb{{size}}.png" }, { "description": null, "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "SCHEIBLAUER-2009-IDCE-Paper.pdf", "type": "application/pdf", "size": 4312791, "path": "Publication:SCHEIBLAUER-2009-IDCE", "url": "https://www.cg.tuwien.ac.at/research/publications/2009/SCHEIBLAUER-2009-IDCE/SCHEIBLAUER-2009-IDCE-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2009/SCHEIBLAUER-2009-IDCE/SCHEIBLAUER-2009-IDCE-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "Scanopy" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2009/SCHEIBLAUER-2009-IDCE/", "__class": "Publication" }, { "id": "PREINER-2009-GIPC", "type_id": "studentproject", "tu_id": null, "repositum_id": null, "title": "Global Illumination for Point Clouds", "date": "2009", "abstract": "", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 799 ], "date_end": "2009-10-08", "date_start": "2009-07-17", "matrikelnr": "0430380", "supervisor": [ 193, 614 ], "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [ "Scanopy" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2009/PREINER-2009-GIPC/", "__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": "WIMMER-2006-DWN", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Do We Need Accurate Reconstruction?", "date": "2006-10", "abstract": "The accurate reconstruction of high-quality representations from range scanning devices for archaeology is very time consuming and costly. The objective of this paper is to show that this accurate reconstruction step can be avoided in many cases. Instead, we present a method to make range scanning data instantly available to archaeologists and other scientists, so that they can immediately experiment and work with the data.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 640, "image_height": 640, "name": "WIMMER-2006-DWN-.png", "type": "image/png", "size": 705417, "path": "Publication:WIMMER-2006-DWN", "url": "https://www.cg.tuwien.ac.at/research/publications/2006/WIMMER-2006-DWN/WIMMER-2006-DWN-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2006/WIMMER-2006-DWN/WIMMER-2006-DWN-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 193 ], "booktitle": "Proceedings of 11th International Congress on Cultural Heritage and New Technologies", "date_from": "2006-10-18", "date_to": "2006-10-20", "lecturer": [ 193 ], "location": "Vienna City Hall, Vienna, Austria", "research_areas": [ "Geometry" ], "keywords": [ "point-based rendering", "laser scanning", "virtual reconstruction" ], "weblinks": [], "files": [ { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 640, "image_height": 640, "name": "WIMMER-2006-DWN-.png", "type": "image/png", "size": 705417, "path": "Publication:WIMMER-2006-DWN", "url": "https://www.cg.tuwien.ac.at/research/publications/2006/WIMMER-2006-DWN/WIMMER-2006-DWN-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2006/WIMMER-2006-DWN/WIMMER-2006-DWN-:thumb{{size}}.png" } ], "projects_workgroups": [ "Scanopy" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2006/WIMMER-2006-DWN/", "__class": "Publication" }, { "id": "WIMMER-2006-IP", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Instant Points: Fast Rendering of Unprocessed Point Clouds", "date": "2006-07", "abstract": "We present an algorithm to display enormous unprocessed point clouds\nat interactive rates without requiring long preprocessing. The\nnovelty here is that we do not make any assumptions about sampling\ndensity or availability of normal vectors for the points. This is\nvery important because such information is available only after\nlengthy postprocessing of scanned datasets, whereas users want to\ninteract with the dataset immediately. Instant Points is an\nout-of-core algorithm that makes use of nested octrees and an\nenhanced version of sequential point trees.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "Altar", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 640, "image_height": 640, "name": "WIMMER-2006-IP-Altar.png", "type": "image/png", "size": 630140, "path": "Publication:WIMMER-2006-IP", "url": "https://www.cg.tuwien.ac.at/research/publications/2006/WIMMER-2006-IP/WIMMER-2006-IP-Altar.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2006/WIMMER-2006-IP/WIMMER-2006-IP-Altar:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 193, 614 ], "booktitle": "Proceedings Symposium on Point-Based Graphics 2006", "date_from": "2006-07-29", "date_to": "2006-07-30", "isbn": "3-90567-332-0", "lecturer": [ 193 ], "location": "Boston, USA", "organization": "Eurographics", "pages_from": "129", "pages_to": "136", "publisher": "Eurographics Association", "research_areas": [ "Geometry" ], "keywords": [ "unprocessed point clouds", "point-based rendering" ], "weblinks": [], "files": [ { "description": null, "filetitle": "Altar", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 640, "image_height": 640, "name": "WIMMER-2006-IP-Altar.png", "type": "image/png", "size": 630140, "path": "Publication:WIMMER-2006-IP", "url": "https://www.cg.tuwien.ac.at/research/publications/2006/WIMMER-2006-IP/WIMMER-2006-IP-Altar.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2006/WIMMER-2006-IP/WIMMER-2006-IP-Altar:thumb{{size}}.png" }, { "description": "Birds eye view of the 262M point model of the Vienna Stephansdom, rendered with the Instant Points system.", "filetitle": "BirdsEye", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 640, "image_height": 640, "name": "WIMMER-2006-IP-BirdsEye.png", "type": "image/png", "size": 245510, "path": "Publication:WIMMER-2006-IP", "url": "https://www.cg.tuwien.ac.at/research/publications/2006/WIMMER-2006-IP/WIMMER-2006-IP-BirdsEye.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2006/WIMMER-2006-IP/WIMMER-2006-IP-BirdsEye:thumb{{size}}.png" }, { "description": "Interior view of the Vienna Stephansdom, rendered at approximately 12fps on an NVIDIA 6800GTO.", "filetitle": "Interior", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1600, "image_height": 1127, "name": "WIMMER-2006-IP-Interior.png", "type": "image/png", "size": 2175503, "path": "Publication:WIMMER-2006-IP", "url": "https://www.cg.tuwien.ac.at/research/publications/2006/WIMMER-2006-IP/WIMMER-2006-IP-Interior.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2006/WIMMER-2006-IP/WIMMER-2006-IP-Interior:thumb{{size}}.png" }, { "description": "Inside the Stephansdom, looking from the high altar to the entrance, hovering right under the ceiling.", "filetitle": "Interior2", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1600, "image_height": 1127, "name": "WIMMER-2006-IP-Interior2.png", "type": "image/png", "size": 3084296, "path": "Publication:WIMMER-2006-IP", "url": "https://www.cg.tuwien.ac.at/research/publications/2006/WIMMER-2006-IP/WIMMER-2006-IP-Interior2.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2006/WIMMER-2006-IP/WIMMER-2006-IP-Interior2:thumb{{size}}.png" }, { "description": "Inside the Stephansdom, looking from the entrance to the high altar.", "filetitle": "Interior3", "main_file": false, "use_in_gallery": true, "access": "public", 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