Global Illumination using Parallel Global Ray-Bundles

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dc.contributor.authorHermes, Janen_US
dc.contributor.authorHenrich, Niklasen_US
dc.contributor.authorGrosch, Thorstenen_US
dc.contributor.authorMueller, Stefanen_US
dc.contributor.editorReinhard Koch and Andreas Kolb and Christof Rezk-Salamaen_US
dc.date.accessioned2014-02-01T16:18:27Z
dc.date.available2014-02-01T16:18:27Z
dc.date.issued2010en_US
dc.description.abstractA fast computation of unbiased global illumination is still an unsolved problem, especially if multiple bounces of light and non-diffuse materials are included. The standard Monte Carlo methods are time-consuming, because many incoherent rays are shot into the scene, which is hard to parallelize. On the other hand, GPUs can make the most of their computing power if the problem can be broken down into many parallel, small tasks. Casting global, parallel ray-bundles into the scene is a way of achieving this parallelism. We exploit modern GPU features to extract all intersection points along each ray within a single rendering pass. Radiance can then be transferred between pairs of all points which allows an arbitrary number of interreflections, especially for compelling multiple glossy reflections. Beside arbitrary BRDFs, our method is independent of the number of light sources and can handle arbitrary shaped light sources in a unified framework for unbiased global illumination. Since many methods exist for fast computation of direct light using soft shadows, we demonstrate how our method can be built on top of any direct light simulation.en_US
dc.description.seriesinformationVision, Modeling, and Visualization (2010)en_US
dc.identifier.isbn978-3-905673-79-1en_US
dc.identifier.urihttps://doi.org/10.2312/PE/VMV/VMV10/065-072en_US
dc.publisherThe Eurographics Associationen_US
dc.subjectCategories and Subject Descriptors (according to ACM CCS): I.3.3 [Computer Graphics]: Picture/Image Generationen_US
dc.titleGlobal Illumination using Parallel Global Ray-Bundlesen_US
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