[ { "id": "intel2016", "type_id": "talk", "tu_id": 253112, "repositum_id": null, "title": "Real-time Subsurface Scattering, Light Transport and Two Minute Papers", "date": "2016", "abstract": "Károly Zsolnai-Fehér is a PhD student at the Technical University of Vienna.\n\nHe is going to talk about Separable Subsurface Scattering, his recent collaboration with Activision Blizzard and the University of Zaragoza to render subsurface scattering in real time on the GPU for computer games.\n\nNext, he'll transition to global illumination and explain a a simple extension to Metropolis Light Transport to improve the convergence speed on a variety of scenes.\n\nThe third part will be about Two Minute Papers, a YouTube web series that he started recently to communicate the most beautiful research results to a general audience.\n", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1072, "image_height": 577, "name": "intel2016-.jpg", "type": "image/jpeg", "size": 40026, "path": "Publication:intel2016", "url": "https://www.cg.tuwien.ac.at/research/publications/2016/intel2016/intel2016-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2016/intel2016/intel2016-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 1073 ], "date_from": "2016-01-16", "event": "Intel Graphics Architecture Forum", "location": "Intel Advanced Rendering Technology group", "research_areas": [ "Rendering" ], "keywords": [ "global illumination", "light transport", "subsurface scattering", "two minute papers" ], "weblinks": [], "files": [ { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 1072, "image_height": 577, "name": "intel2016-.jpg", "type": "image/jpeg", "size": 40026, "path": "Publication:intel2016", "url": "https://www.cg.tuwien.ac.at/research/publications/2016/intel2016/intel2016-.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2016/intel2016/intel2016-:thumb{{size}}.png" } ], "projects_workgroups": [ "Mofa" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2016/intel2016/", "__class": "Publication" }, { "id": "Jimenez_SSS_2015", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Separable Subsurface Scattering", "date": "2015-06", "abstract": "In this paper we propose two real-time models for simulating subsurface scattering for a large variety of translucent materials, which need under 0.5 milliseconds per frame to execute. This makes them a practical option for real-time production scenarios. Current state-of-the-art, real-time approaches simulate subsurface light transport by approximating the radially symmetric non-separable diffusion kernel with a sum of separable Gaussians, which requires multiple (up to twelve) 1D convolutions. In this work we relax the requirement of radial symmetry to approximate a 2D diffuse reflectance profile by a single separable kernel. We first show that low-rank approximations based on matrix factorization outperform previous approaches, but they still need several passes to get good results. To solve this, we present two different separable models: the first one yields a high-quality diffusion simulation, while the second one offers an attractive trade-off between physical accuracy and artistic control. Both allow rendering subsurface scattering using only two 1D convolutions, reducing both execution time and memory consumption, while delivering results comparable to techniques with higher cost. Using our importance-sampling and jittering strategies, only seven samples per pixel are required. Our methods can be implemented as simple post-processing steps without intrusive changes to existing rendering pipelines.\n\nhttps://www.youtube.com/watch?v=P0Tkr4HaIVk", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "teaser", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1381, "image_height": 731, "name": "Jimenez_SSS_2015-teaser.png", "type": "image/png", "size": 1415449, "path": "Publication:Jimenez_SSS_2015", "url": "https://www.cg.tuwien.ac.at/research/publications/2015/Jimenez_SSS_2015/Jimenez_SSS_2015-teaser.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2015/Jimenez_SSS_2015/Jimenez_SSS_2015-teaser:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 1236, 1073, 1237, 1128, 808, 1238, 1239, 193, 1240 ], "date_from": "2015-06-23", "date_to": "2015-06-26", "event": "Eurographics Symposium on Rendering (EGSR)", "issn": "1467-8659", "journal": "Computer Graphics Forum", "lecturer": [ 1128 ], "location": "Darmstadt", "number": "6", "pages_from": "188", "pages_to": "197", "volume": "34", "research_areas": [ "Rendering" ], "keywords": [ "separable", "realtime rendering", "subsurface scattering", "filtering" ], "weblinks": [ { "href": "http://onlinelibrary.wiley.com/doi/10.1111/cgf.12529/abstract", "caption": null, "description": null, "main_file": 0 } ], "files": [ { "description": "EGSR 2015 talk slides.", "filetitle": "egsr2015talk", "main_file": false, "use_in_gallery": false, "access": "public", "name": "Jimenez_SSS_2015-egsr2015talk.pptx", "type": "application/zip", "size": 37107902, "path": "Publication:Jimenez_SSS_2015", "url": "https://www.cg.tuwien.ac.at/research/publications/2015/Jimenez_SSS_2015/Jimenez_SSS_2015-egsr2015talk.pptx", "thumb_image_sizes": [] }, { "description": "Full paper preprint.", "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Jimenez_SSS_2015-paper.pdf", "type": "application/pdf", "size": 28716442, "path": "Publication:Jimenez_SSS_2015", "url": "https://www.cg.tuwien.ac.at/research/publications/2015/Jimenez_SSS_2015/Jimenez_SSS_2015-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2015/Jimenez_SSS_2015/Jimenez_SSS_2015-paper:thumb{{size}}.png" }, { "description": "Additional explanations and results of the method.", "filetitle": "supplementary1", "main_file": false, "use_in_gallery": false, "access": "public", "name": "Jimenez_SSS_2015-supplementary1.pdf", "type": "application/pdf", "size": 27600680, "path": "Publication:Jimenez_SSS_2015", "url": "https://www.cg.tuwien.ac.at/research/publications/2015/Jimenez_SSS_2015/Jimenez_SSS_2015-supplementary1.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2015/Jimenez_SSS_2015/Jimenez_SSS_2015-supplementary1:thumb{{size}}.png" }, { "description": "Kernel plots.", "filetitle": "supplementary2", "main_file": false, "use_in_gallery": false, "access": "public", "name": "Jimenez_SSS_2015-supplementary2.pdf", "type": "application/pdf", "size": 4903341, "path": "Publication:Jimenez_SSS_2015", "url": "https://www.cg.tuwien.ac.at/research/publications/2015/Jimenez_SSS_2015/Jimenez_SSS_2015-supplementary2.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2015/Jimenez_SSS_2015/Jimenez_SSS_2015-supplementary2:thumb{{size}}.png" }, { "description": null, "filetitle": "teaser", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1381, "image_height": 731, "name": "Jimenez_SSS_2015-teaser.png", "type": "image/png", "size": 1415449, "path": "Publication:Jimenez_SSS_2015", "url": "https://www.cg.tuwien.ac.at/research/publications/2015/Jimenez_SSS_2015/Jimenez_SSS_2015-teaser.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2015/Jimenez_SSS_2015/Jimenez_SSS_2015-teaser:thumb{{size}}.png" } ], "projects_workgroups": [ "Mofa" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2015/Jimenez_SSS_2015/", "__class": "Publication" }, { "id": "Auzinger-2015-IST", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "Prefiltered Anti-Aliasing on Parallel Hardware", "date": "2015", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 808 ], "date_from": "2015-04-29", "event": "Seminar Talk", "location": "IST Austria", "research_areas": [ "Rendering" ], "keywords": [], "weblinks": [], "files": [], "projects_workgroups": [ "Mofa" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2015/Auzinger-2015-IST/", "__class": "Publication" }, { "id": "zsolnai-ist-invited-2014", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "Light Transport with a Touch of Fluids", "date": "2014-10-21", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 1073 ], "date_from": "2014-10-21", "event": "IST Austria", "research_areas": [ "Rendering" ], "keywords": [ "photorealistic rendering", "subsurface scattering", "fluid simulation" ], "weblinks": [], "files": [], "projects_workgroups": [ "Mofa" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2014/zsolnai-ist-invited-2014/", "__class": "Publication" }, { "id": "bernhard-2014-GTOM", "type_id": "journalpaper", "tu_id": null, "repositum_id": null, "title": "Gaze-To-Object Mapping During Visual Search in 3D Virtual Environments ", "date": "2014-08", "abstract": "Stimuli obtained from highly dynamic 3D virtual environments and synchronous eye-tracking data are commonly used by algorithms that strive to correlate gaze to scene objects, a process referred to as Gaze-To-Object Mapping (GTOM). We propose to address this problem with a probabilistic approach using Bayesian inference. The desired result of the inference is a predicted probability density function (PDF) specifying for each object in the scene a probability to be attended by the user. To evaluate the quality of a predicted attention PDF, we present a methodology to assess the information value (i.e., likelihood) in the predictions of dierent approaches that can be used to infer object attention. To this end, we propose an experiment based on a visual search task which allows us to determine the object of attention at a certain point in time under controlled conditions.\nWe perform this experiment with a wide range of static and dynamic visual scenes to obtain a ground-truth evaluation data set, allowing us to assess GTOM techniques in a set of 30 particularly challenging cases.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "thumnail", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 703, "image_height": 314, "name": "bernhard-2014-GTOM-thumnail.png", "type": "image/png", "size": 151264, "path": "Publication:bernhard-2014-GTOM", "url": "https://www.cg.tuwien.ac.at/research/publications/2014/bernhard-2014-GTOM/bernhard-2014-GTOM-thumnail.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2014/bernhard-2014-GTOM/bernhard-2014-GTOM-thumnail:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 660, 731, 779, 193 ], "date_from": "2014-08-08", "date_to": "2014-08-09", "event": "ACM Symposium on Applied Perception (SAP 2014)", "issn": "1544-3558", "journal": "ACM Transactions on Applied Perception (Special Issue SAP 2014)", "lecturer": [ 660 ], "location": "Vancouver, Canada", "number": "3", "pages_from": "14:1", "pages_to": "14:17", "volume": "11", "research_areas": [ "Perception", "Rendering" ], "keywords": [ "object-based attention", "eye-tracking", "virtual environments", "visual attention" ], "weblinks": [ { "href": "http://dl.acm.org/citation.cfm?doid=2663596.2644812", "caption": null, "description": null, "main_file": 0 } ], "files": [ { "description": null, "filetitle": "draft", "main_file": true, "use_in_gallery": false, "access": "public", "name": "bernhard-2014-GTOM-draft.pdf", "type": "application/pdf", "size": 9514669, "path": "Publication:bernhard-2014-GTOM", "url": "https://www.cg.tuwien.ac.at/research/publications/2014/bernhard-2014-GTOM/bernhard-2014-GTOM-draft.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2014/bernhard-2014-GTOM/bernhard-2014-GTOM-draft:thumb{{size}}.png" }, { "description": null, "filetitle": "thumnail", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 703, "image_height": 314, "name": "bernhard-2014-GTOM-thumnail.png", "type": "image/png", "size": 151264, "path": "Publication:bernhard-2014-GTOM", "url": "https://www.cg.tuwien.ac.at/research/publications/2014/bernhard-2014-GTOM/bernhard-2014-GTOM-thumnail.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2014/bernhard-2014-GTOM/bernhard-2014-GTOM-thumnail:thumb{{size}}.png" }, { "description": null, "filetitle": "video", "main_file": true, "use_in_gallery": false, "access": "public", "preview_image_width": 1024, "preview_image_height": 768, "name": "bernhard-2014-GTOM-video.mp4", "type": "video/mp4", "size": 29837759, "path": "Publication:bernhard-2014-GTOM", "preview_name": "bernhard-2014-GTOM-video:preview.png", "preview_type": "image/jpeg", "preview_size": 12852, "url": "https://www.cg.tuwien.ac.at/research/publications/2014/bernhard-2014-GTOM/bernhard-2014-GTOM-video.mp4", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2014/bernhard-2014-GTOM/bernhard-2014-GTOM-video:thumb{{size}}.png", "video_mp4": "https://www.cg.tuwien.ac.at/research/publications/2014/bernhard-2014-GTOM/bernhard-2014-GTOM-video:video.mp4" } ], "projects_workgroups": [ "Mofa", "illvisation" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2014/bernhard-2014-GTOM/", "__class": "Publication" }, { "id": "hecher-2014-MH", "type_id": "journalpaper_notalk", "tu_id": null, "repositum_id": null, "title": "A Comparative Perceptual Study of Soft Shadow Algorithms", "date": "2014-06", "abstract": "We performed a perceptual user study of algorithms that approximate soft shadows in real time. Although a huge body of soft-shadow algorithms have been proposed, to our knowledge this is the first methodical study for comparing different real-time shadow algorithms with respect to their plausibility and visual appearance. We evaluated soft-shadow properties like penumbra overlap with respect to their relevance to shadow perception in a systematic way, and we believe that our results can be useful to guide future shadow approaches in their methods of evaluation. In this study, we also capture the predominant case of an inexperienced user observing shadows without comparing to a reference solution, such as when watching a movie or playing a game. One important result of this experiment is to scientifically verify that real-time soft-shadow algorithms, despite having become physically based and very realistic, can nevertheless be intuitively distinguished from a correct solution by untrained users.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 978, "image_height": 850, "name": "hecher-2014-MH-image.png", "type": "image/png", "size": 245534, "path": "Publication:hecher-2014-MH", "url": "https://www.cg.tuwien.ac.at/research/publications/2014/hecher-2014-MH/hecher-2014-MH-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2014/hecher-2014-MH/hecher-2014-MH-image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 779, 660, 326, 452, 193 ], "issn": "1544-3558", "journal": "ACM Transactions on Applied Perception", "number": "5", "pages_from": "5:1", "pages_to": "5:21", "volume": "11", "research_areas": [ "Perception", "Rendering" ], "keywords": [ "Perception Studies", "Soft Shadows" ], "weblinks": [ { "href": "http://doi.acm.org/10.1145/2620029", "caption": null, "description": null, "main_file": 0 } ], "files": [ { "description": null, "filetitle": "draft", "main_file": false, "use_in_gallery": false, "access": "public", "name": "hecher-2014-MH-draft.pdf", "type": "application/pdf", "size": 7731118, "path": "Publication:hecher-2014-MH", "url": "https://www.cg.tuwien.ac.at/research/publications/2014/hecher-2014-MH/hecher-2014-MH-draft.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2014/hecher-2014-MH/hecher-2014-MH-draft:thumb{{size}}.png" }, { "description": null, "filetitle": "image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 978, "image_height": 850, "name": "hecher-2014-MH-image.png", "type": "image/png", "size": 245534, "path": "Publication:hecher-2014-MH", "url": "https://www.cg.tuwien.ac.at/research/publications/2014/hecher-2014-MH/hecher-2014-MH-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2014/hecher-2014-MH/hecher-2014-MH-image:thumb{{size}}.png" } ], "projects_workgroups": [ "Mofa" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2014/hecher-2014-MH/", "__class": "Publication" }, { "id": "silvana_2014", "type_id": "bachelorthesis", "tu_id": null, "repositum_id": null, "title": "Automated Lighting Design For Photorealistic Rendering", "date": "2014", "abstract": "We present a novel technique to minimize the number of light sources\nin a virtual 3D scene without introducing any perceptible changes to it.\nThe theoretical part of the thesis\ngives an overview on previous research in the field of automated lighting\ndesign, followed by an introduction to the theory of rendering and genetic \nalgorithms. \nThe implementation is done as extension called \"Light Source Cleaner\"\nto LuxRender, a physically based, open-source renderer.\nThe algorithm adjusts the intensities of the light sources in a \nway that certain light sources can be canceled out, thus enabling to render \na similar image with significantly less number of light sources, \nintroducing a remarkable reduction to the execution time of scenes where many light sources are used.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 400, "image_height": 300, "name": "silvana_2014-.png", "type": "image/png", "size": 88867, "path": "Publication:silvana_2014", "url": "https://www.cg.tuwien.ac.at/research/publications/2014/silvana_2014/silvana_2014-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2014/silvana_2014/silvana_2014-:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 1130 ], "date_end": "2014-02-01", "date_start": "2013-10-01", "matrikelnr": "0605836", "supervisor": [ 193, 1073 ], "research_areas": [ "Rendering" ], "keywords": [ "global illumination", "photorealistic rendering" ], "weblinks": [], "files": [ { "description": null, "filetitle": "", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 400, "image_height": 300, "name": "silvana_2014-.png", "type": "image/png", "size": 88867, "path": "Publication:silvana_2014", "url": "https://www.cg.tuwien.ac.at/research/publications/2014/silvana_2014/silvana_2014-.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2014/silvana_2014/silvana_2014-:thumb{{size}}.png" }, { "description": null, "filetitle": "paper", "main_file": true, "use_in_gallery": false, "access": "public", "name": "silvana_2014-paper.pdf", "type": "application/pdf", "size": 5574577, "path": "Publication:silvana_2014", "url": "https://www.cg.tuwien.ac.at/research/publications/2014/silvana_2014/silvana_2014-paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2014/silvana_2014/silvana_2014-paper:thumb{{size}}.png" } ], "projects_workgroups": [ "Mofa" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2014/silvana_2014/", "__class": "Publication" }, { "id": "Auzinger_2014_DCGI", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "Analytic Rasterization", "date": "2014", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 808 ], "date_from": "2014-04-30", "date_to": "2014-04-30", "event": "Invited Talk at Czech Technical University in Prague", "location": "Czech Technical University in Prague, Department of Computer Graphics and Interaction, Prague", "research_areas": [ "Rendering" ], "keywords": [ "antialiasing", "analytic", "prefiltering" ], "weblinks": [], "files": [], "projects_workgroups": [ "Mofa" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2014/Auzinger_2014_DCGI/", "__class": "Publication" }, { "id": "Auzinger_2014_UJA", "type_id": "talk", "tu_id": null, "repositum_id": null, "title": "GPGPU in Graphics and Visualization", "date": "2014", "abstract": null, "authors_et_al": false, "substitute": null, "main_image": null, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 808 ], "date_from": "2014-10-15", "date_to": "2014-10-15", "event": "Invited Talk at Universidad de Jaén in Spain", "location": "Universidad de Jaén, Spain", "research_areas": [ "Rendering" ], "keywords": [ "GPGPU", "medical", "visualization", "antialiasing" ], "weblinks": 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In contrast to traditional graphics hardware methods, which rely on massive oversampling to combat aliasing issues in the rasterization process, we evaluate a closed-form solution of the associated prefilter convolution. This enables the use of a wide range of filter functions with arbitrary kernel sizes, as well as general shading methods such as texture mapping or complex illumination models. Due to the use of analytic solutions, our results are exact in the mathematical sense and provide objective ground-truth for other anti-aliasing methods and enable the rigorous comparison of different models and filters. An efficient implementation on general purpose graphics hardware is discussed and several comparisons to existing techniques and of various filter functions are given.", "authors_et_al": false, "substitute": null, "main_image": { "description": null, "filetitle": "Teaser Image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 2632, "image_height": 816, "name": "Auzinger_2013_NSAA-Teaser Image.png", "type": "image/png", "size": 161776, "path": "Publication:Auzinger_2013_NSAA", "url": "https://www.cg.tuwien.ac.at/research/publications/2013/Auzinger_2013_NSAA/Auzinger_2013_NSAA-Teaser Image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2013/Auzinger_2013_NSAA/Auzinger_2013_NSAA-Teaser Image:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 808, 844, 799, 193 ], "booktitle": "Proceedings of the 18th International Workshop on Vision, Modeling and Visualization (VMV 2013)", "date_from": "2013-09-11", "date_to": "2013-09-13", "editor": "Michael Bronstein and Jean Favre and Kai Hormann", "event": "Vision, Modelin, Visualization (VMV)", "isbn": "978-3-905674-51-4", "lecturer": [ 808 ], "location": "Lugano, Switzerland", "organization": "Eurographics", "pages_from": "169", "pages_to": "176", "publisher": "Eurographics Association", "research_areas": [ "Rendering" ], "keywords": [], "weblinks": [], "files": [ { "description": "Examples", "filetitle": "Examples", "main_file": false, "use_in_gallery": false, "access": "public", "name": "Auzinger_2013_NSAA-Examples.zip", "type": "application/zip", "size": 5948301, "path": "Publication:Auzinger_2013_NSAA", "url": "https://www.cg.tuwien.ac.at/research/publications/2013/Auzinger_2013_NSAA/Auzinger_2013_NSAA-Examples.zip", "thumb_image_sizes": [] }, { "description": "image", "filetitle": "image", "main_file": false, "use_in_gallery": false, "access": "public", "image_width": 2632, "image_height": 816, "name": "Auzinger_2013_NSAA-image.png", "type": "image/png", "size": 161776, "path": "Publication:Auzinger_2013_NSAA", "url": "https://www.cg.tuwien.ac.at/research/publications/2013/Auzinger_2013_NSAA/Auzinger_2013_NSAA-image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2013/Auzinger_2013_NSAA/Auzinger_2013_NSAA-image:thumb{{size}}.png" }, { "description": "Full paper preprint.", "filetitle": "Paper", "main_file": true, "use_in_gallery": false, "access": "public", "preview_image_width": 181, "preview_image_height": 256, "name": "Auzinger_2013_NSAA-Paper.pdf", "type": "application/pdf", "size": 6842509, "path": "Publication:Auzinger_2013_NSAA", "preview_name": "Auzinger_2013_NSAA-Paper:preview.png", "preview_type": "image/png", "preview_size": 36507, "url": "https://www.cg.tuwien.ac.at/research/publications/2013/Auzinger_2013_NSAA/Auzinger_2013_NSAA-Paper.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2013/Auzinger_2013_NSAA/Auzinger_2013_NSAA-Paper:thumb{{size}}.png" }, { "description": null, "filetitle": "Teaser Image", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 2632, "image_height": 816, "name": "Auzinger_2013_NSAA-Teaser Image.png", "type": "image/png", "size": 161776, "path": "Publication:Auzinger_2013_NSAA", "url": "https://www.cg.tuwien.ac.at/research/publications/2013/Auzinger_2013_NSAA/Auzinger_2013_NSAA-Teaser Image.png", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2013/Auzinger_2013_NSAA/Auzinger_2013_NSAA-Teaser Image:thumb{{size}}.png" } ], "projects_workgroups": [ "Mofa" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2013/Auzinger_2013_NSAA/", "__class": "Publication" }, { "id": "LUKSCH-2013-FLM", "type_id": "inproceedings", "tu_id": null, "repositum_id": null, "title": "Fast Light-Map Computation with Virtual Polygon Lights", "date": "2013-03", "abstract": "We propose a new method for the fast computation of light maps using a many-light global-illumination solution. A complete scene can be light mapped on the order of seconds to minutes, allowing fast and consistent previews for editing or even generation at loading time. \n\nIn our method, virtual point lights are clustered into a set of virtual polygon lights, which represent a compact description of the illumination in the scene. The actual light-map generation is performed directly on the GPU. Our approach degrades gracefully, avoiding objectionable artifacts even for very short computation times. 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The device can be used in a high-resolution configuration that measures the spectrum of a column of an imaged scene with up to 0.8 nm spectral resolution, rivalling commercial non-imaging spectrometers, and a mid-resolution\nhyperspectral mode that allows the spectral measurement of a whole image, with up to 5 nm spectral resolution and 120x120 spatial resolution.\nWe develop the necessary calibration methods based on halogen/fluorescent lamps and laser pointers\nto acquire all necessary information about the optical system. \nWe also derive the mathematical methods to interpret and reconstruct spectra directly from the Bayer array images of a standard RGGB camera.\nThis objective design introduces accurate spectral remote sensing to computational photography, with numerous applications in color theory, colorimetry, vision and rendering, making the acquisition of a spectral image as simple as taking a high-dynamic-range image.", "authors_et_al": false, "substitute": null, "main_image": { "description": "Practical Spectral Photography", "filetitle": "Practical Spectral Photography", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1000, "image_height": 850, "name": "Habel_2012_PSP-Practical Spectral Photography.jpg", "type": "image/jpeg", "size": 492549, "path": "Publication:Habel_2012_PSP", "url": "https://www.cg.tuwien.ac.at/research/publications/2012/Habel_2012_PSP/Habel_2012_PSP-Practical Spectral Photography.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2012/Habel_2012_PSP/Habel_2012_PSP-Practical Spectral Photography:thumb{{size}}.png" }, "sync_repositum_override": null, "repositum_presentation_id": null, "authors": [ 618, 957, 193 ], "date_from": "2012-05-13", "date_to": "2012-05-18", "event": "Eurographics 2012", "journal": "Computer Graphics Forum (Proceedings EUROGRAPHICS 2012)", "lecturer": [ 618 ], "location": "Cagliari, Italy", "number": "2", "pages_from": "449", "pages_to": "458", "volume": "31", "research_areas": [ "Rendering" ], "keywords": [ "Computational Photography", "Spectroscopy", "Computed Tomography Imaging Spectrometer", "Practical" ], "weblinks": [ { "href": "http://onlinelibrary.wiley.com/doi/10.1111/j.1467-8659.2012.03024.x/abstract", "caption": null, "description": null, "main_file": 0 } ], "files": [ { "description": "Matlab code of EM iteration", "filetitle": "Code", "main_file": false, "use_in_gallery": false, "access": "public", "name": "Habel_2012_PSP-Code.txt", "type": "text/plain", "size": 403, "path": "Publication:Habel_2012_PSP", "url": "https://www.cg.tuwien.ac.at/research/publications/2012/Habel_2012_PSP/Habel_2012_PSP-Code.txt", "thumb_image_sizes": [] }, { "description": "Additional Data Sets and Materials", "filetitle": "Data Sets", "main_file": false, "use_in_gallery": false, "access": "public", "name": "Habel_2012_PSP-Data Sets.pdf", "type": "application/pdf", "size": 2532986, "path": "Publication:Habel_2012_PSP", "url": "https://www.cg.tuwien.ac.at/research/publications/2012/Habel_2012_PSP/Habel_2012_PSP-Data Sets.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2012/Habel_2012_PSP/Habel_2012_PSP-Data Sets:thumb{{size}}.png" }, { "description": "Practical Spectral Photography", "filetitle": "Draft", "main_file": true, "use_in_gallery": false, "access": "public", "name": "Habel_2012_PSP-Draft.pdf", "type": "application/pdf", "size": 13963126, "path": "Publication:Habel_2012_PSP", "url": "https://www.cg.tuwien.ac.at/research/publications/2012/Habel_2012_PSP/Habel_2012_PSP-Draft.pdf", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2012/Habel_2012_PSP/Habel_2012_PSP-Draft:thumb{{size}}.png" }, { "description": "Practical Spectral Photography", "filetitle": "Practical Spectral Photography", "main_file": false, "use_in_gallery": true, "access": "public", "image_width": 1000, "image_height": 850, "name": "Habel_2012_PSP-Practical Spectral Photography.jpg", "type": "image/jpeg", "size": 492549, "path": "Publication:Habel_2012_PSP", "url": "https://www.cg.tuwien.ac.at/research/publications/2012/Habel_2012_PSP/Habel_2012_PSP-Practical Spectral Photography.jpg", "thumb_image_sizes": [ 16, 64, 100, 175, 300, 600 ], "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2012/Habel_2012_PSP/Habel_2012_PSP-Practical Spectral Photography:thumb{{size}}.png" } ], "projects_workgroups": [ "Mofa" ], "url": "https://www.cg.tuwien.ac.at/research/publications/2012/Habel_2012_PSP/", "__class": "Publication" } ]