Efficient Reflectance and Visibility Approximations for Environment Map Rendering

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dc.contributor.authorGreen, Paulen_US
dc.contributor.authorKautz, Janen_US
dc.contributor.authorDurand, Fredoen_US
dc.date.accessioned2015-02-21T15:43:06Z
dc.date.available2015-02-21T15:43:06Z
dc.date.issued2007en_US
dc.description.abstractWe present a technique for approximating isotropic BRDFs and precomputed self-occlusion that enables accurate and efficient prefiltered environment map rendering. Our approach uses a nonlinear approximation of the BRDF as a weighted sum of isotropic Gaussian functions. Our representation requires a minimal amount of storage, can accurately represent BRDFs of arbitrary sharpness, and is above all, efficient to render. We precompute visibility due to self-occlusion and store a low-frequency approximation suitable for glossy reflections. We demonstrate our method by fitting our representation to measured BRDF data, yielding high visual quality at real-time frame rates.en_US
dc.description.number3en_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.description.volume26en_US
dc.identifier.doi10.1111/j.1467-8659.2007.01072.xen_US
dc.identifier.issn1467-8659en_US
dc.identifier.pages495-502en_US
dc.identifier.urihttps://doi.org/10.1111/j.1467-8659.2007.01072.xen_US
dc.publisherThe Eurographics Association and Blackwell Publishing Ltden_US
dc.titleEfficient Reflectance and Visibility Approximations for Environment Map Renderingen_US
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