A PCA Decomposition for Real-time BRDF Editing and Relighting with Global Illumination

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dc.contributor.authorNguyen, Chuong H.en_US
dc.contributor.authorKyung, Min-Hoen_US
dc.contributor.authorLee, Joo-Haengen_US
dc.contributor.authorNam, Seung-Wooen_US
dc.date.accessioned2015-02-23T16:58:32Z
dc.date.available2015-02-23T16:58:32Z
dc.date.issued2010en_US
dc.description.abstractWe propose a novel rendering method which supports interactive BRDF editing as well as relighting on a 3D scene. For interactive BRDF editing, we linearize an analytic BRDF model with basis BRDFs obtained from a principal component analysis. For each basis BRDF, the radiance transfer is precomputed and stored in vector form. In rendering time, illumination of a point is computed by multiplying the radiance transfer vectors of the basis BRDFs by the incoming radiance from gather samples and then linearly combining the results weighted by user-controlled parameters. To improve the level of accuracy, a set of sub-area samples associated with a gather sample refines the glossy reflection of the geometric details without increasing the precomputation time. We demonstrate this program with a number of examples to verify the real-time performance of relighting and BRDF editing on 3D scenes with complex lighting and geometry.en_US
dc.description.number4en_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.description.volume29en_US
dc.identifier.doi10.1111/j.1467-8659.2010.01744.xen_US
dc.identifier.issn1467-8659en_US
dc.identifier.pages1469-1478en_US
dc.identifier.urihttps://doi.org/10.1111/j.1467-8659.2010.01744.xen_US
dc.publisherThe Eurographics Association and Blackwell Publishing Ltden_US
dc.titleA PCA Decomposition for Real-time BRDF Editing and Relighting with Global Illuminationen_US
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29-Issue 4
EGSR10: 21th Eurographics Symposium on Rendering