[ { "id": "BOKSANSKY-2019-RTS", "type_id": "inbook", "tu_id": 283359, "repositum_id": null, "title": "Ray Traced Shadows: Maintaining Real-Time Frame Rates", "date": "2019-03", "abstract": "Efficient and accurate shadow computation is a long-standing problem in computer graphics. In real-time applications, shadows have traditionally been computed using the rasterization-based pipeline. With recent advances of graphics hardware, it is now possible to use ray tracing in real-time applications, making ray traced shadows a viable alternative to rasterization. While ray traced shadows avoid many problems inherent in rasterized shadows, tracing every shadow ray independently can become a bottleneck if the number of required rays rises, e.g., for high-resolution rendering, for scenes with multiple lights, or for area lights. Therefore, the computation should focus on image regions where shadows actually appear, in particular on the shadow boundaries.\n\nWe present a practical method for ray traced shadows in real-time applications. Our method uses the standard rasterization pipeline for resolving primary-ray visibility and ray tracing for resolving visibility of light sources. We propose an adaptive sampling algorithm for shadow rays combined with an adaptive shadowfiltering method. These two techniques allow computing high-quality shadows with a limited number of shadow rays per pixel. We evaluated our method using a recent real-time ray tracing API (DirectX Raytracing) and compare the results with shadow mapping using cascaded shadow maps.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 1703, 193, 198 ], "address": "New York", "booktitle": "Ray Tracing Gems: High-Quality and Real-Time Rendering with DXR and Other APIs", "doi": "10.1007/978-1-4842-4427-2_13", "editor": "Erik Haines and Tomas Akenine-Möller", "isbn": "978-1-4842-4426-5", "open_access": "yes", "pages_from": "159", "pages_to": "182", "publisher": "Springer", "research_areas": [ "Rendering" ], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2019/BOKSANSKY-2019-RTS/", "__class": "Publication" }, { "id": "MATTAUSCH-2015-CHCRT", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "CHC+RT: Coherent Hierarchical Culling for Ray Tracing", "date": "2015-05", "abstract": "We propose a new technique for in-core and out-of-core GPU ray tracing using a generalization of hierarchical occlusion culling in the style of the CHC++ method. Our method exploits the rasterization pipeline and hardware occlusion queries in order to create coherent batches of work for localized shader-based ray tracing kernels. By combining hierarchies in both ray space and object space, the method is able to share intermediate traversal results among multiple rays. We exploit temporal coherence among similar ray sets between frames and also within the given frame. A suitable management of the current visibility state makes it possible to benefit from occlusion culling for less coherent ray types like diffuse reflections. Since large scenes are still a challenge for modern GPU ray tracers, our method is most useful for scenes with medium to high complexity, especially since our method inherently supports ray tracing highly complex scenes that do not fit in GPU memory. For in-core scenes our method is comparable to CUDA ray tracing and performs up to 5.94 × better than pure shader-based ray tracing.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "teaser", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 2598, "image_height": 1732, "name": "MATTAUSCH-2015-CHCRT-teaser.jpg", "type": "image/jpeg", "size": 3169435, "path": "Publication:MATTAUSCH-2015-CHCRT", "url": "https://www.cg.tuwien.ac.at/research/publications/2015/MATTAUSCH-2015-CHCRT/MATTAUSCH-2015-CHCRT-teaser.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2015/MATTAUSCH-2015-CHCRT/MATTAUSCH-2015-CHCRT-teaser:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 326, 198, 1280, 1281, 193, 1184 ], "date_from": "2015-05-04", "date_to": "2015-05-08", "event": "Eurographics", "issn": "1467-8659", "journal": "Computer Graphics Forum", "lecturer": [ 326 ], "location": "Zurich, Switzerland", "number": "2", "pages_from": "537", "pages_to": "548", "volume": "34", "research_areas": [ "Rendering" ], "keywords": [ "occlusion culling", "ray tracing" ], "weblinks": [ { "href": "10.1111/cgf.12582", "caption": null, "description": null, "main_file": 0 } ], "files": [ { "description": null, "filetitle": "draft", "main_file": true, "use_in_gallery": false, "access": "public", "name": "MATTAUSCH-2015-CHCRT-draft.pdf", "type": "application/pdf", "size": 26172214, "path": "Publication:MATTAUSCH-2015-CHCRT", "url": "https://www.cg.tuwien.ac.at/research/publications/2015/MATTAUSCH-2015-CHCRT/MATTAUSCH-2015-CHCRT-draft.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2015/MATTAUSCH-2015-CHCRT/MATTAUSCH-2015-CHCRT-draft:thumb{{size}}.png" }, { "description": null, "filetitle": "teaser", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 2598, "image_height": 1732, "name": "MATTAUSCH-2015-CHCRT-teaser.jpg", "type": "image/jpeg", "size": 3169435, "path": "Publication:MATTAUSCH-2015-CHCRT", "url": "https://www.cg.tuwien.ac.at/research/publications/2015/MATTAUSCH-2015-CHCRT/MATTAUSCH-2015-CHCRT-teaser.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2015/MATTAUSCH-2015-CHCRT/MATTAUSCH-2015-CHCRT-teaser:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2015/MATTAUSCH-2015-CHCRT/", "__class": "Publication" }, { "id": "MATTAUSCH-2012-EOV", "type_id": "inbook", "tu_id": null, "repositum_id": null, "title": "Efficient Online Visibility for Shadow Maps", "date": "2012-02", "abstract": "Standard online occlusion culling is able to vastly improve the rasterization performance of walkthrough applications by identifying large parts of the scene as invisible from the camera and rendering only the visible geometry. However, it is of little use for the acceleration of shadow map generation (i.e., rasterizing the scene from the light view [Williams 78]), so that typically a high percentage of the geometry will be visible when rendering shadow maps. For example, in outdoor scenes typical viewpoints are near the ground and therefore have significant occlusion, while light viewpoints are higher up and see most of the geometry. Our algorithm remedies this situation by quickly detecting and culling the geometry that does not contribute to the shadow in the final image.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1273, "image_height": 689, "name": "MATTAUSCH-2012-EOV-image.png", "type": "image/png", "size": 184051, "path": "Publication:MATTAUSCH-2012-EOV", "url": "https://www.cg.tuwien.ac.at/research/publications/2012/MATTAUSCH-2012-EOV/MATTAUSCH-2012-EOV-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2012/MATTAUSCH-2012-EOV/MATTAUSCH-2012-EOV-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 326, 198, 897, 452, 193 ], "booktitle": "GPU Pro 3: Advanced Rendering Techniques", "editor": "Wolfgang Engel", "isbn": "978-1439887820", "pages_from": "233", "pages_to": "242", "publisher": "CRC Press", "research_areas": [ "Rendering" ], "keywords": [ "shadow maps", "visibility culling" ], "weblinks": [], "files": [ { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1273, "image_height": 689, "name": "MATTAUSCH-2012-EOV-image.png", "type": "image/png", "size": 184051, "path": "Publication:MATTAUSCH-2012-EOV", "url": "https://www.cg.tuwien.ac.at/research/publications/2012/MATTAUSCH-2012-EOV/MATTAUSCH-2012-EOV-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2012/MATTAUSCH-2012-EOV/MATTAUSCH-2012-EOV-image:thumb{{size}}.png" } ], "projects_workgroups": [ "rend" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2012/MATTAUSCH-2012-EOV/", "__class": "Publication" }, { "id": "bittner-2011-scc", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Shadow Caster Culling for Efficient Shadow Mapping", "date": "2011-02", "abstract": "We propose a novel method for efficient construction of shadow maps by culling shadow casters which do not contribute to visible shadows. The method uses a mask of potential shadow receivers to cull shadow casters using a hierarchical occlusion culling algorithm. We propose several variants of the receiver mask implementations with different culling efficiency and computational costs.\nFor scenes with statically focused shadow maps we designed an efficient strategy to incrementally update the shadow map, which comes close to the rendering performance for unshadowed scenes. We show that our method achieves 3x-10x speedup for rendering large city like scenes and 1.5x-2x speedup for rendering an actual game scene.", "authors_et_al": false, "substitute": null, "main_image": { "description": "shadows", "filetitle": "image-l4d", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1273, "image_height": 691, "name": "bittner-2011-scc-image-l4d.png", "type": "image/png", "size": 1306467, "path": "Publication:bittner-2011-scc", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-image-l4d.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-image-l4d:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 198, 326, 897, 193 ], "booktitle": "Proceedings of the ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games 2011", "date_from": "2011-02-18", "date_to": "2011-02-20", "isbn": "978-1-4503-0565-5", "lecturer": [ 198 ], "location": "San Francisco", "organization": "ACM SIGGRAPH", "pages_from": "81", "pages_to": "88", "publisher": "ACM", "research_areas": [ "Rendering" ], "keywords": [ "occlusion culling", "shadow mapping" ], "weblinks": [], "files": { "0": { "description": null, "filetitle": "draft", "main_file": true, "use_in_gallery": false, "access": "public", "name": "bittner-2011-scc-draft.pdf", "type": "application/pdf", "size": 2530764, "path": "Publication:bittner-2011-scc", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-draft.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-draft:thumb{{size}}.png" }, "2": { "description": "shadows", "filetitle": "image-l4d", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1273, "image_height": 691, "name": "bittner-2011-scc-image-l4d.png", "type": "image/png", "size": 1306467, "path": "Publication:bittner-2011-scc", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-image-l4d.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-image-l4d:thumb{{size}}.png" }, "3": { "description": "shadowcasters", "filetitle": "image-lightview", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1273, "image_height": 689, "name": "bittner-2011-scc-image-lightview.png", "type": "image/png", "size": 184051, "path": "Publication:bittner-2011-scc", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-image-lightview.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-image-lightview:thumb{{size}}.png" }, "4": { "description": "lispsm", "filetitle": "image-masking", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1600, "image_height": 1254, "name": "bittner-2011-scc-image-masking.png", "type": "image/png", "size": 304042, "path": "Publication:bittner-2011-scc", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-image-masking.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-image-masking:thumb{{size}}.png" }, "5": { "description": "manhattan", "filetitle": "image-newyork", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1600, "image_height": 1280, "name": "bittner-2011-scc-image-newyork.png", "type": "image/png", "size": 977441, "path": "Publication:bittner-2011-scc", "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-image-newyork.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-image-newyork:thumb{{size}}.png" }, "6": { "description": "video", "filetitle": "l4dead", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 960, "preview_image_height": 720, "name": "bittner-2011-scc-l4dead.wmv", "type": "text/plain", "size": 97819412, "path": "Publication:bittner-2011-scc", "preview_name": "bittner-2011-scc-l4dead:preview.png", "preview_type": "image/jpeg", "preview_size": 31844, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-l4dead.wmv", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-l4dead:thumb{{size}}.png" }, "7": { "description": "all-scenes-walkthrough", "filetitle": "video-casterculling", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 800, "preview_image_height": 600, "name": "bittner-2011-scc-video-casterculling.avi", "type": "video/x-msvideo", "size": 82113594, "path": "Publication:bittner-2011-scc", "preview_name": "bittner-2011-scc-video-casterculling:preview.png", "preview_type": "image/jpeg", "preview_size": 28542, "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-video-casterculling.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-video-casterculling:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/bittner-2011-scc-video-casterculling:video.mp4" } }, "projects_workgroups": [ "GPV" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2011/bittner-2011-scc/", "__class": "Publication" }, { "id": "BITTNER-2009-AGVS", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Adaptive Global Visibility Sampling", "date": "2009-08", "abstract": "In this paper we propose a global visibility algorithm which computes from-region visibility for all view cells simultaneously in a progressive manner. We cast rays to sample visibility interactions and use the information carried by a ray for all view cells it intersects. The main contribution of the paper is a set of adaptive sampling strategies based on ray mutations that exploit the spatial coherence of visibility. Our method achieves more than an order of magnitude speedup compared to per-view cell sampling. This provides a practical solution to visibility preprocessing and also enables a new type of interactive visibility analysis application, where it is possible to quickly inspect and modify a coarse global visibility solution that is constantly refined.\n", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1024, "image_height": 729, "name": "BITTNER-2009-AGVS-.jpg", "type": "image/jpeg", "size": 468604, "path": "Publication:BITTNER-2009-AGVS", "url": "https://www.cg.tuwien.ac.at/research/publications/2009/BITTNER-2009-AGVS/BITTNER-2009-AGVS-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2009/BITTNER-2009-AGVS/BITTNER-2009-AGVS-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 198, 326, 194, 203, 193 ], "date_from": "2009-08-03", "date_to": "2009-08-07", "event": "ACM SIGGRAPH 2009", "issn": "0730-0301", "journal": "ACM Transactions on Graphics", "lecturer": [ 198, 326 ], "location": "New Orleans, LA", "number": "3", "pages_from": "94:1", "pages_to": "94:10", "volume": "28", "research_areas": [ "Rendering" ], "keywords": [ "occlusion culling", "visibility sampling", "visibility", "PVS" ], "weblinks": [ { "href": "http://dl.acm.org/citation.cfm?id=1576246.1531400&coll=DL&dl=ACM&CFID=254151241&CFTOKEN=20753570", "caption": null, "description": null, "main_file": 0 } ], "files": [ { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1024, "image_height": 729, "name": "BITTNER-2009-AGVS-.jpg", "type": "image/jpeg", "size": 468604, "path": "Publication:BITTNER-2009-AGVS", "url": "https://www.cg.tuwien.ac.at/research/publications/2009/BITTNER-2009-AGVS/BITTNER-2009-AGVS-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2009/BITTNER-2009-AGVS/BITTNER-2009-AGVS-:thumb{{size}}.png" }, { "description": "Video showing the dynamic update functionality", "filetitle": "dynamic updates", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 100, "preview_image_height": 75, "name": "BITTNER-2009-AGVS-dynamic updates.avi", "type": "video/x-msvideo", "size": 29171852, "path": "Publication:BITTNER-2009-AGVS", "preview_name": "BITTNER-2009-AGVS-dynamic updates:preview.png", "preview_type": "image/png", "preview_size": 9718, "url": "https://www.cg.tuwien.ac.at/research/publications/2009/BITTNER-2009-AGVS/BITTNER-2009-AGVS-dynamic updates.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2009/BITTNER-2009-AGVS/BITTNER-2009-AGVS-dynamic updates:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2009/BITTNER-2009-AGVS/BITTNER-2009-AGVS-dynamic updates:video.mp4" }, { "description": "GVS vs. AGVS comparison", "filetitle": "GVS vs. AGVS", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 100, "preview_image_height": 75, "name": "BITTNER-2009-AGVS-GVS vs. AGVS.avi", "type": "video/x-msvideo", "size": 8880834, "path": "Publication:BITTNER-2009-AGVS", "preview_name": "BITTNER-2009-AGVS-GVS vs. AGVS:preview.png", "preview_type": "image/png", "preview_size": 9227, "url": "https://www.cg.tuwien.ac.at/research/publications/2009/BITTNER-2009-AGVS/BITTNER-2009-AGVS-GVS vs. AGVS.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2009/BITTNER-2009-AGVS/BITTNER-2009-AGVS-GVS vs. AGVS:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2009/BITTNER-2009-AGVS/BITTNER-2009-AGVS-GVS vs. AGVS:video.mp4" }, { "description": "The main video, also available at youtube", "filetitle": "main video", "main_file": false, "use_in_gallery": false, "access": "public", "preview_image_width": 100, "preview_image_height": 75, "name": "BITTNER-2009-AGVS-main video.avi", "type": "video/x-msvideo", "size": 59867136, "path": "Publication:BITTNER-2009-AGVS", "preview_name": "BITTNER-2009-AGVS-main video:preview.png", "preview_type": "image/png", "preview_size": 4865, "url": "https://www.cg.tuwien.ac.at/research/publications/2009/BITTNER-2009-AGVS/BITTNER-2009-AGVS-main video.avi", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2009/BITTNER-2009-AGVS/BITTNER-2009-AGVS-main video:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2009/BITTNER-2009-AGVS/BITTNER-2009-AGVS-main video:video.mp4" }, { "description": "ACM Authorizer link", "filetitle": "Preprint", "main_file": true, "use_in_gallery": false, 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"tu_id": null, "repositum_id": null, "title": "Optimized HLOD Refinement Driven by Hardware Occlusion Queries", "date": "2007-11", "abstract": "We present a new method for integrating hierarchical levels of detail (HLOD) with occlusion culling. The algorithm refines the HLOD hierarchy using geometric criteria as well as the occlusion information. For the refinement we use a simple model which takes into account the possible distribution of the visible pixels. The traversal of the HLOD hierarchy is optimized by a new algorithm which uses spatial and temporal coherence of visibility. We predict the HLOD refinement condition for the current frame based on the results from the last frame. This allows an efficient update of the front of termination nodes as well as an efficient scheduling of hardware occlusion queries. Compared to previous approaches, the new method improves on speed as well as image quality. 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It puts together view space and object space partitioning in order to control the render cost and memory cost of the visibility description generated by a visibility solver. The presented method progressively refines view space and object space subdivisions while minimizing the associated render and memory costs. Contrary to previous techniques, both subdivisions are driven by actual visibility information. 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Healey and Edward Lank", "isbn": "978-1-56881-337-0", "lecturer": [ 326 ], "location": "Montreal, Canada", "pages_from": "335", "pages_to": "342", "publisher": "Canadian Human-Computer Communications Society", "research_areas": [ "Rendering" ], "keywords": [ "visibility preprocessing", "potentially visible sets", "view cells" ], "weblinks": [], "files": [ { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 735, "image_height": 880, "name": "MATTAUSCH-2007-OSP-.png", "type": "image/png", "size": 210985, "path": "Publication:MATTAUSCH-2007-OSP", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/MATTAUSCH-2007-OSP/MATTAUSCH-2007-OSP-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/MATTAUSCH-2007-OSP/MATTAUSCH-2007-OSP-:thumb{{size}}.png" }, { "description": null, "filetitle": "Graphics Interface Slides", "main_file": false, "use_in_gallery": false, "access": "public", "name": "MATTAUSCH-2007-OSP-Graphics Interface Slides.ppt", "type": "application/msword", "size": 7805440, "path": "Publication:MATTAUSCH-2007-OSP", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/MATTAUSCH-2007-OSP/MATTAUSCH-2007-OSP-Graphics Interface Slides.ppt", "thumb_image_sizes": [] }, { "description": null, "filetitle": "Preprint", "main_file": true, "use_in_gallery": false, "access": "public", "name": "MATTAUSCH-2007-OSP-Preprint.pdf", "type": "application/pdf", "size": 2519208, "path": "Publication:MATTAUSCH-2007-OSP", "url": "https://www.cg.tuwien.ac.at/research/publications/2007/MATTAUSCH-2007-OSP/MATTAUSCH-2007-OSP-Preprint.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2007/MATTAUSCH-2007-OSP/MATTAUSCH-2007-OSP-Preprint:thumb{{size}}.png" } ], "projects_workgroups": [ "GameTools" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2007/MATTAUSCH-2007-OSP/", "__class": "Publication" }, { "id": "MATTAUSCH-2006-AVC", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Adaptive Visibility-Driven View Cell Construction", "date": "2006-06", "abstract": "We present a new method for the automatic partitioning of view space into a multi-level view cell hierarchy. We use a cost-based model in order to minimize the average rendering time. Unlike previous methods, our model\ntakes into account the actual visibility in the scene, and the partition is not restricted to planes given by the scene geometry. We show that the resulting view cell hierarchy works for different types of scenes and gives lower average rendering time than previously used methods.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 788, "image_height": 652, "name": "MATTAUSCH-2006-AVC-.png", "type": "image/png", "size": 12026, "path": "Publication:MATTAUSCH-2006-AVC", "url": "https://www.cg.tuwien.ac.at/research/publications/2006/MATTAUSCH-2006-AVC/MATTAUSCH-2006-AVC-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2006/MATTAUSCH-2006-AVC/MATTAUSCH-2006-AVC-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 326, 198, 193 ], "booktitle": "Rendering Techniques 2006 (Proceedings Eurographics Symposium on Rendering)", "date_from": "2006-06-26", "date_to": "2006-06-28", "editor": "Wolfgang Heidrich and Tomas Akenine-Moller", "isbn": "3-90567-335-5", "lecturer": [ 326 ], "location": "Nicosia, Cyprus", "organization": "Eurographics", "pages_from": "195", "pages_to": "206", "publisher": "Eurographics Association", "research_areas": [ "Rendering" ], "keywords": [ "view cells", "real-time rendering", "visibility" ], "weblinks": [], "files": [ { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 788, "image_height": 652, "name": "MATTAUSCH-2006-AVC-.png", "type": "image/png", "size": 12026, "path": "Publication:MATTAUSCH-2006-AVC", "url": "https://www.cg.tuwien.ac.at/research/publications/2006/MATTAUSCH-2006-AVC/MATTAUSCH-2006-AVC-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2006/MATTAUSCH-2006-AVC/MATTAUSCH-2006-AVC-:thumb{{size}}.png" }, { "description": "render cost (bsp)", "filetitle": "image-viewcells-bsp", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 869, "image_height": 710, "name": "MATTAUSCH-2006-AVC-image-viewcells-bsp.png", "type": "image/png", "size": 15680, "path": "Publication:MATTAUSCH-2006-AVC", "url": "https://www.cg.tuwien.ac.at/research/publications/2006/MATTAUSCH-2006-AVC/MATTAUSCH-2006-AVC-image-viewcells-bsp.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2006/MATTAUSCH-2006-AVC/MATTAUSCH-2006-AVC-image-viewcells-bsp:thumb{{size}}.png" }, { "description": "render cost (our method)", "filetitle": "image-viewcells-vsp", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 869, "image_height": 709, "name": "MATTAUSCH-2006-AVC-image-viewcells-vsp.png", "type": "image/png", "size": 17096, "path": "Publication:MATTAUSCH-2006-AVC", "url": "https://www.cg.tuwien.ac.at/research/publications/2006/MATTAUSCH-2006-AVC/MATTAUSCH-2006-AVC-image-viewcells-vsp.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2006/MATTAUSCH-2006-AVC/MATTAUSCH-2006-AVC-image-viewcells-vsp:thumb{{size}}.png" }, { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "MATTAUSCH-2006-AVC-paper.pdf", "type": "application/pdf", "size": 1642808, "path": "Publication:MATTAUSCH-2006-AVC", "url": "https://www.cg.tuwien.ac.at/research/publications/2006/MATTAUSCH-2006-AVC/MATTAUSCH-2006-AVC-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2006/MATTAUSCH-2006-AVC/MATTAUSCH-2006-AVC-paper:thumb{{size}}.png" }, { "description": null, "filetitle": "slides", "main_file": false, "use_in_gallery": false, "access": "public", "name": "MATTAUSCH-2006-AVC-slides.ppt", "type": "application/msword", "size": 4604928, "path": "Publication:MATTAUSCH-2006-AVC", "url": "https://www.cg.tuwien.ac.at/research/publications/2006/MATTAUSCH-2006-AVC/MATTAUSCH-2006-AVC-slides.ppt", "thumb_image_sizes": [] } ], "projects_workgroups": [ "GameTools" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2006/MATTAUSCH-2006-AVC/", "__class": "Publication" }, { "id": "havran-2006-tut", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "Efficient Sorting and Searching in Rendering Algorithms", "date": "2006", "abstract": "In this tutorial we would like to highlight the connection between rendering algorithms and sorting\nand searching as classical problems studied in computer science. We will provide both theoretical and\nempirical evidence that for many rendering techniques most time is spent by sorting and searching. In\nparticular we will discuss problems and solutions for visibility computation, density estimation, and importance\nsampling. For each problem we mention its specific issues such as dimensionality of the search\ndomain or online versus offline searching. We will present the underlying data structures and their enhancements\nin the context of specific rendering algorithms such as ray shooting, photon mapping, and hidden\nsurface removal.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 351, "image_height": 218, "name": "havran-2006-tut-image.png", "type": "image/png", "size": 1945, "path": "Publication:havran-2006-tut", "url": "https://www.cg.tuwien.ac.at/research/publications/2006/havran-2006-tut/havran-2006-tut-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2006/havran-2006-tut/havran-2006-tut-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 203, 198 ], "event": "Eurographics 2006 Tutorial T4", "research_areas": [ "Rendering" ], "keywords": [ "Visibility", "Sorting and Searching", "Rendering" ], "weblinks": [], "files": [ { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 351, "image_height": 218, "name": "havran-2006-tut-image.png", "type": "image/png", "size": 1945, "path": "Publication:havran-2006-tut", "url": "https://www.cg.tuwien.ac.at/research/publications/2006/havran-2006-tut/havran-2006-tut-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2006/havran-2006-tut/havran-2006-tut-image:thumb{{size}}.png" }, { "description": "Tutorial slides", "filetitle": "slides", "main_file": false, "use_in_gallery": false, "access": "public", "name": "havran-2006-tut-slides.pdf", "type": "application/pdf", "size": 4029552, "path": "Publication:havran-2006-tut", "url": "https://www.cg.tuwien.ac.at/research/publications/2006/havran-2006-tut/havran-2006-tut-slides.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2006/havran-2006-tut/havran-2006-tut-slides:thumb{{size}}.png" } ], "projects_workgroups": [ "GameTools" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2006/havran-2006-tut/", "__class": "Publication" }, { "id": "bittner-2005-egsr", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Fast Exact From-Region Visibility in Urban Scenes", "date": "2005-06", "abstract": "We present a fast exact from-region visibility algorithm for 2.5D\nurban scenes. The algorithm uses a hierarchical subdivision of\nline-space for identifying visibility interactions in a 2D\nfootprint of the scene. Visibility in the remaining vertical\ndimension is resolved by testing for the existence of lines\nstabbing sequences of virtual portals. Our results show that exact\nanalytic from-region visibility in urban scenes can be computed at\ntimes comparable or even superior to recent conservative methods. ", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1179, "image_height": 962, "name": "bittner-2005-egsr-image.jpg", "type": "image/jpeg", "size": 44941, "path": "Publication:bittner-2005-egsr", "url": "https://www.cg.tuwien.ac.at/research/publications/2005/bittner-2005-egsr/bittner-2005-egsr-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2005/bittner-2005-egsr/bittner-2005-egsr-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 198, 194, 193 ], "booktitle": "Rendering Techniques 2005 (Proceedings Eurographics Symposium on Rendering)", "date_from": "2005-06-29", "date_to": "2005-07-01", "editor": "Kavita Bala and Philip Dutré", "isbn": "3-905673-23-1", "lecturer": [ 198 ], "location": "Konstanz, Germany", "organization": "Eurographics", "pages_from": "223", "pages_to": "230", "publisher": "Eurographics Association", "research_areas": [ "Rendering" ], "keywords": [ "real-time rendering", "visibility" ], "weblinks": [], "files": [ { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1179, "image_height": 962, "name": "bittner-2005-egsr-image.jpg", "type": "image/jpeg", "size": 44941, "path": "Publication:bittner-2005-egsr", "url": "https://www.cg.tuwien.ac.at/research/publications/2005/bittner-2005-egsr/bittner-2005-egsr-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2005/bittner-2005-egsr/bittner-2005-egsr-image:thumb{{size}}.png" }, { "description": null, "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "bittner-2005-egsr-Paper.pdf", "type": "application/pdf", "size": 3449376, "path": "Publication:bittner-2005-egsr", "url": "https://www.cg.tuwien.ac.at/research/publications/2005/bittner-2005-egsr/bittner-2005-egsr-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2005/bittner-2005-egsr/bittner-2005-egsr-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "UrbanViz", "GameTools" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2005/bittner-2005-egsr/", "__class": "Publication" }, { "id": "Wimmer-2005-HOQ", "type_id": "inbook", "tu_id": null, "repositum_id": null, "title": "Hardware Occlusion Queries Made Useful", "date": "2005-03", "abstract": "Hardware occlusion queries make it possible for an application to ask the 3D API whether or not any pixels would be drawn if a particular object was rendered. With this feature, applications can check to see whether or not the bounding boxes of complex objects are visible; if the bounds are occluded, the application\ncan skip drawing those objects. In this chapter, we present a simple and powerful algorithm to solve the problem of latency and CPU/GPU stall typically associated with a naive usage of hardware occlusion queries.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1920, "image_height": 1390, "name": "Wimmer-2005-HOQ-image.jpg", "type": "image/jpeg", "size": 719597, "path": "Publication:Wimmer-2005-HOQ", "url": "https://www.cg.tuwien.ac.at/research/publications/2005/Wimmer-2005-HOQ/Wimmer-2005-HOQ-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2005/Wimmer-2005-HOQ/Wimmer-2005-HOQ-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 193, 198 ], "booktitle": "GPU Gems 2: Programming Techniques for High-Performance Graphics and General-Purpose Computation", "editor": "Matt Pharr and Randima Fernando", "isbn": "0-32133-559-7", "pages_from": "91", "pages_to": "108", "publisher": "Addison-Wesley", "research_areas": [ "Rendering" ], "keywords": [ "occlusion culling", "real-time rendering" ], "weblinks": [], "files": [ { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1920, "image_height": 1390, "name": "Wimmer-2005-HOQ-image.jpg", "type": "image/jpeg", "size": 719597, "path": "Publication:Wimmer-2005-HOQ", "url": "https://www.cg.tuwien.ac.at/research/publications/2005/Wimmer-2005-HOQ/Wimmer-2005-HOQ-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2005/Wimmer-2005-HOQ/Wimmer-2005-HOQ-image:thumb{{size}}.png" } ], "projects_workgroups": [ "GameTools" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2005/Wimmer-2005-HOQ/", "__class": "Publication" }, { "id": "havran-2005-egsr", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Ray Maps for Global Illumination", "date": "2005", "abstract": "We describe a novel data structure for representing light transport called ray map. The ray map extends the concept\nof photon maps: it stores not only photon impacts but the whole photon paths. We demonstrate the utility of ray\nmaps for global illumination by eliminating boundary bias and reducing topological bias of density estimation in\nglobal illumination. Thanks to the elimination of boundary bias we could use ray maps for fast direct visualization\nwith the image quality being close to that obtained by the expensive nal gathering step. We describe in detail our\nimplementation of the ray map using a lazily constructed kD-tree. We also present several optimizations bringing\nthe ray map query performance close to the performance of the photon map.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 685, "image_height": 738, "name": "havran-2005-egsr-image.jpg", "type": "image/jpeg", "size": 67354, "path": "Publication:havran-2005-egsr", "url": "https://www.cg.tuwien.ac.at/research/publications/2005/havran-2005-egsr/havran-2005-egsr-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2005/havran-2005-egsr/havran-2005-egsr-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 203, 198, 576, 312 ], "booktitle": "Eurographics Symposium on Rendering", "pages_from": "43", "pages_to": "54", "research_areas": [ "Rendering" ], "keywords": [], "weblinks": [], "files": [ { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 685, "image_height": 738, "name": "havran-2005-egsr-image.jpg", "type": "image/jpeg", "size": 67354, "path": "Publication:havran-2005-egsr", "url": "https://www.cg.tuwien.ac.at/research/publications/2005/havran-2005-egsr/havran-2005-egsr-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2005/havran-2005-egsr/havran-2005-egsr-image:thumb{{size}}.png" }, { "description": null, "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "havran-2005-egsr-Paper.pdf", "type": "application/pdf", "size": 4262551, "path": "Publication:havran-2005-egsr", "url": "https://www.cg.tuwien.ac.at/research/publications/2005/havran-2005-egsr/havran-2005-egsr-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2005/havran-2005-egsr/havran-2005-egsr-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "GameTools" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2005/havran-2005-egsr/", "__class": "Publication" }, { "id": "Bittner-2004-CHC", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Coherent Hierarchical Culling: Hardware Occlusion Queries Made Useful", "date": "2004-09", "abstract": "We present a simple but powerful algorithm for optimizing the usage of hardware occlusion queries in arbitrary complex scenes. Our method minimizes the number of issued queries and reduces the delays due to the latency of query results. We reuse the results of the occlusion queries from the last frame in order to initiate and schedule the queries in the next frame. This is done by processing nodes of a spatial hierarchy in front-to-back order, interleaving occlusion queries with the rendering of certain previously visible nodes. The proposed scheduling of the queries makes use of spatial and temporal coherence of visibility. Despite its simplicity, the algorithm achieves good culling efficiency for scenes of various characteristics. The implementation of the algorithm is straightforward, and it can be easily integrated in existing real-time rendering packages using various spatial data structures.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 160, "image_height": 96, "name": "Bittner-2004-CHC-image.jpg", "type": "image/jpeg", "size": 7299, "path": "Publication:Bittner-2004-CHC", "url": "https://www.cg.tuwien.ac.at/research/publications/2004/Bittner-2004-CHC/Bittner-2004-CHC-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2004/Bittner-2004-CHC/Bittner-2004-CHC-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 198, 193, 451, 190 ], "date_from": "2004-08-30", "date_to": "2004-09-03", "event": "EUROGRAPHICS 2004", "issn": "0167-7055", "journal": "Computer Graphics Forum", "lecturer": [ 193 ], "location": "Grenoble, France", "note": "Proceedings EUROGRAPHICS 2004", "number": "3", "pages_from": "615", "pages_to": "624", "volume": "23", "research_areas": [ "Rendering" ], "keywords": [ "occlusion query", "visibility", "real-time rendering", "occlusion culling" ], "weblinks": [], "files": [ { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 160, "image_height": 96, "name": "Bittner-2004-CHC-image.jpg", "type": "image/jpeg", "size": 7299, "path": "Publication:Bittner-2004-CHC", "url": "https://www.cg.tuwien.ac.at/research/publications/2004/Bittner-2004-CHC/Bittner-2004-CHC-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2004/Bittner-2004-CHC/Bittner-2004-CHC-image:thumb{{size}}.png" }, { "description": null, "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Bittner-2004-CHC-Paper.pdf", "type": "application/pdf", "size": 1105728, "path": "Publication:Bittner-2004-CHC", "url": "https://www.cg.tuwien.ac.at/research/publications/2004/Bittner-2004-CHC/Bittner-2004-CHC-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2004/Bittner-2004-CHC/Bittner-2004-CHC-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "UrbanViz" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2004/Bittner-2004-CHC/", "__class": "Publication" }, { "id": "Bittner-2003-Vis", "type_id": "journalpaper_notalk", "tu_id": null, "repositum_id": null, "title": "Visibility in Computer Graphics", "date": "2003-09", "abstract": "Visibility computation is crucial for computer\ngraphics from its very beginning. The first visibility algorithms in\ncomputer graphics aimed to determine visible surfaces in a synthesized\nimage of a 3D scene. Nowadays there are many different visibility\nalgorithms for various visibility problems. We propose a new taxonomy\nof visibility problems that is based on a classification according to\nthe problem domain. We provide a broad overview of visibility problems\nand algorithms in computer graphics grouped by the proposed\ntaxonomy. The paper surveys visible surface algorithms, visibility\nculling algorithms, visibility algorithms for shadow computation,\nglobal illumination, point-based and image-based rendering, and global\nvisibility computations. Finally, we discuss common concepts of\nvisibility algorithm design and several criteria for the\nclassification of visibility algorithms.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 198, 194 ], "issn": "0265-8135", "journal": "Environment and Planning B: Planning and Design", "number": "5", "pages_from": "729", "pages_to": "756", "volume": "30", "research_areas": [ "Rendering" ], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [ "UrbanViz" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2003/Bittner-2003-Vis/", "__class": "Publication" }, { "id": "Artusi-2003-Del", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Delivering Interactivity to Complex Tone Mapping Operators", "date": "2003-06", "abstract": "The accurate display of high dynamic range images requires the application of complex tone mapping operators. These operators are computationally costly, which prevents their usage in interactive applications. We propose a general framework that delivers interactive performance to an important subclass of tone mapping operators, namely global tone mapping operators. The proposed framework consists of four steps: sampling the input image, applying the tone mapping operator, tting the point-sampled tone mapping curve, and reconstructing the tone mapping curve for all pixels of the input image. We show how to make use of recent graphics hardware while keeping the advantage of generality by performing tone mapping in software. We demonstrate the capabilities of our method by accelerating several common global tone mapping operators and integrating the operators in a real-time rendering application.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 512, "image_height": 768, "name": "Artusi-2003-Del-image.jpg", "type": "image/jpeg", "size": 140358, "path": "Publication:Artusi-2003-Del", "url": "https://www.cg.tuwien.ac.at/research/publications/2003/Artusi-2003-Del/Artusi-2003-Del-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2003/Artusi-2003-Del/Artusi-2003-Del-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 191, 198, 193, 192 ], "booktitle": "Rendering Techniques 2003 (Proceedings Eurographics Symposium on Rendering)", "date_from": "2003-06-25", "date_to": "2003-06-27", "editor": "Per Christensen and Daniel Cohen-Or", "isbn": "3-905673-03-7", "lecturer": [ 191 ], "location": "Leuven, Belgium", "organization": "Eurographics", "pages_from": "38", "pages_to": "44", "publisher": "Eurographics Association", "research_areas": [ "Rendering" ], "keywords": [], "weblinks": [], "files": [ { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 512, "image_height": 768, "name": "Artusi-2003-Del-image.jpg", "type": "image/jpeg", "size": 140358, "path": "Publication:Artusi-2003-Del", "url": "https://www.cg.tuwien.ac.at/research/publications/2003/Artusi-2003-Del/Artusi-2003-Del-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2003/Artusi-2003-Del/Artusi-2003-Del-image:thumb{{size}}.png" }, { "description": null, "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Artusi-2003-Del-Paper.pdf", "type": "application/pdf", "size": 16156109, "path": "Publication:Artusi-2003-Del", "url": "https://www.cg.tuwien.ac.at/research/publications/2003/Artusi-2003-Del/Artusi-2003-Del-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2003/Artusi-2003-Del/Artusi-2003-Del-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "realreflect" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2003/Artusi-2003-Del/", "__class": "Publication" }, { "id": "Havran-2003-Exp", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Exploiting Temporal Coherence in Ray Casted Walkthroughs", "date": "2003", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 203, 198, 312 ], "booktitle": "Proceedings of Spring Conference on Computer Graphics", "editor": "K. Joy", "isbn": "802231837x", "pages_from": "164", "pages_to": "172", "publisher": "ACM", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2003/Havran-2003-Exp/", "__class": "Publication" }, { "id": "Bittner-2003-Exa", "type_id": "journalpaper_notalk", "tu_id": null, "repositum_id": null, "title": "Exact Regional Visibility Using Line-Space Partitioning", "date": "2003", "abstract": "", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 198, 199, 266 ], "journal": "Computers & Graphics", "number": "4", "pages_from": "569", "pages_to": "580", "volume": "27", "research_areas": [], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2003/Bittner-2003-Exa/", "__class": "Publication" }, { "id": "Bittner-2001-Vis", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Visibility Preprocessing for Urban Scenes using Line Space Subdivision", "date": "2001-10", "abstract": "We present an algorithm for visibility preprocessing of urban environments. The algorithm uses a subdivision of line space to analytically calculate a conservative potentially visible set for a given region in the scene. We present a detailed evaluation of our method including a comparison to another recently published visibility preprocessing algorithm. To the best of our knowledge the proposed method is the first algorithm that scales to large scenes and efficiently handles large view cells.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1276, "image_height": 948, "name": "Bittner-2001-Vis-image.jpg", "type": "image/jpeg", "size": 262662, "path": "Publication:Bittner-2001-Vis", "url": "https://www.cg.tuwien.ac.at/research/publications/2001/Bittner-2001-Vis/Bittner-2001-Vis-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2001/Bittner-2001-Vis/Bittner-2001-Vis-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 198, 194, 193 ], "booktitle": "Proceedings of Pacific Graphics 2001 (Ninth Pacific Conference on Computer Graphics and Applications)", "editor": "Bob Werner", "isbn": "0-7695-1227-5", "lecturer": [ 198 ], "location": "Tokyo, Japan", "pages_from": "276", "pages_to": "284", "publisher": "IEEE Computer Society Press", "research_areas": [ "Rendering" ], "keywords": [], "weblinks": [], "files": [ { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1276, "image_height": 948, "name": "Bittner-2001-Vis-image.jpg", "type": "image/jpeg", "size": 262662, "path": "Publication:Bittner-2001-Vis", "url": "https://www.cg.tuwien.ac.at/research/publications/2001/Bittner-2001-Vis/Bittner-2001-Vis-image.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2001/Bittner-2001-Vis/Bittner-2001-Vis-image:thumb{{size}}.png" }, { "description": null, "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Bittner-2001-Vis-Paper.pdf", "type": "application/pdf", "size": 2616610, "path": "Publication:Bittner-2001-Vis", "url": "https://www.cg.tuwien.ac.at/research/publications/2001/Bittner-2001-Vis/Bittner-2001-Vis-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2001/Bittner-2001-Vis/Bittner-2001-Vis-Paper:thumb{{size}}.png" } ], "projects_workgroups": [ "UrbanViz" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2001/Bittner-2001-Vis/", "__class": "Publication" }, { "id": "Bittner-2001-ERV", "type_id": "techreport", "tu_id": null, "repositum_id": null, "title": "Exact Regional Visibility using Line Space Partitioning", "date": "2001-03", "abstract": "We present a new technique for exact and output sensitive\ndetermination of visibility from a polygonal region in the plane. It\nuses hierarchical partitioning of line space, that provides\ncomprehensive description of visibility for a set of occluders.\nTo the best of our knowledge, it is the first exact regional\nvisibility algorithm suitable for visibility preprocessing of large\nscenes of unspecific type. We have evaluated the implementation on\n scenes with various visibility characteristics.", "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 198, 199 ], "number": "TR-186-2-01-06", "pages_from": "1", "pages_to": "13", "research_areas": [], "keywords": [ "projective geometry", "Plücker coordinates", "kD--tree", "BSP--tree", "line--space", "visibility" ], "weblinks": [], "files": [ { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Bittner-2001-ERV-paper.gz", "type": "application/octet-stream", "size": 817662, "path": "Publication:Bittner-2001-ERV", "url": "https://www.cg.tuwien.ac.at/research/publications/2001/Bittner-2001-ERV/Bittner-2001-ERV-paper.gz", "thumb_image_sizes": [] } ], "projects_workgroups": [], "url": "https://www.cg.tuwien.ac.at/research/publications/2001/Bittner-2001-ERV/", "__class": "Publication" } ]