ISHair: Importance Sampling for Hair Scattering

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dc.contributor.authorOu, Jiaweien_US
dc.contributor.authorXie, Fengen_US
dc.contributor.authorKrishnamachari, Parasharen_US
dc.contributor.authorPellacini, Fabioen_US
dc.contributor.editorFredo Durand and Diego Gutierrezen_US
dc.date.accessioned2015-02-28T07:36:17Z
dc.date.available2015-02-28T07:36:17Z
dc.date.issued2012en_US
dc.description.abstractWe present an importance sampling method for the bidirectional scattering distribution function (bsdf) of hair. Our method is based on the multi-lobe hair scattering model presented by Sadeghi et al. [SPJT10]. We reduce noise by drawing samples from a distribution that approximates the bsdf well. Our algorithm is efficient and easy to implement, since the sampling process requires only the evaluation of a few analytic functions, with no significant memory overhead or need for precomputation. We tested our method in a research raytracer and a production renderer based on micropolygon rasterization. We show significant improvements for rendering direct illumination using multiple importance sampling and for rendering indirect illumination using path tracing.en_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.description.volume31
dc.identifier.doi10.1111/j.1467-8659.2012.03150.x
dc.identifier.urihttps://doi.org/10.1111/j.1467-8659.2012.03150.xen_US
dc.publisherThe Eurographics Association and Blackwell Publishing Ltd.en_US
dc.subjectI.3.7 [Computer Graphics]en_US
dc.subjectThree Dimensional Graphics and Realismen_US
dc.subjectColoren_US
dc.subjectshadingen_US
dc.subjectshadowingen_US
dc.subjectand textureen_US
dc.titleISHair: Importance Sampling for Hair Scatteringen_US
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EGSR12: 23th Eurographics Symposium on Rendering