Subdivision Next-Event Estimation for Path-Traced Subsurface Scattering

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dc.contributor.authorKoerner, Daviden_US
dc.contributor.authorNovak, Janen_US
dc.contributor.authorKutz, Peteren_US
dc.contributor.authorHabel, Ralfen_US
dc.contributor.authorJarosz, Wojciechen_US
dc.contributor.editorElmar Eisemann and Eugene Fiumeen_US
dc.date.accessioned2016-06-17T14:12:43Z
dc.date.available2016-06-17T14:12:43Z
dc.date.issued2016en_US
dc.description.abstractWe present subdivision next-event estimation (SNEE) for unbiased Monte Carlo simulation of subsurface scattering. Our technique is designed to sample high frequency illumination through geometrically complex interfaces with highly directional scattering lobes enclosing a scattering medium. This case is difficult to sample and a common source of image noise. We explore the idea of exploiting the degree of freedom given by path vertices within the interior medium to find two-bounce connections to the light that satisfy the law of refraction. SNEE first finds a surface point by tracing a probe ray and then performs a subdivision step to place an intermediate vertex within the medium according to the incoming light at the chosen surface point. Our subdivision construction ensures that the path will connect to the light while obeying Fermat's principle of least time. We discuss the details of our technique and demonstrate the benefits of integrating SNEE into a forward path tracer.en_US
dc.description.sectionheadersLight Transport - Part 2en_US
dc.description.seriesinformationEurographics Symposium on Rendering - Experimental Ideas & Implementationsen_US
dc.identifier.doi10.2312/sre.20161214en_US
dc.identifier.isbn978-3-03868-019-2en_US
dc.identifier.issn1727-3463en_US
dc.identifier.pages91-96en_US
dc.identifier.urihttps://doi.org/10.2312/sre.20161214en_US
dc.publisherThe Eurographics Associationen_US
dc.subjectI.3.7 [Computer Graphics]en_US
dc.subjectThree Dimensional Graphics and Realismen_US
dc.subjectRaytracingen_US
dc.titleSubdivision Next-Event Estimation for Path-Traced Subsurface Scatteringen_US
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Rendering - Experimental Ideas & Implementations 2016