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dc.contributor.authorLi, Hongsongen_US
dc.contributor.authorPellacini, Fabioen_US
dc.contributor.authorTorrance, Kenneth E.en_US
dc.contributor.editorKavita Bala and Philip Dutreen_US
dc.date.accessioned2014-01-27T14:49:03Z
dc.date.available2014-01-27T14:49:03Z
dc.date.issued2005en_US
dc.identifier.isbn3-905673-23-1en_US
dc.identifier.issn1727-3463en_US
dc.identifier.urihttp://dx.doi.org/10.2312/EGWR/EGSR05/283-290en_US
dc.description.abstractSubsurface scattering is a fundamental aspect of surface appearance responsible for the characteristic look of many materials. Monte Carlo path tracing techniques can be employed with high accuracy to simulate the scattering of light inside a translucent object, albeit at the cost of long computation times. In a seminal work, Jensen et al. [JMLH01] presented a more efficient technique to simulate subsurface scattering that, while producing accurate results for translucent, optically-thick, materials, exhibits artifacts for semi-transparent, optically-thin, ones, especially in regions of high-curvature. This paper presents a hybrid Monte Carlo technique capable of simulating a wide range of materials exhibiting subsurface scattering, from translucent to semi-transparent ones, with an accuracy comparable to Monte Carlo techniques but at a much lower computational cost. Our approach utilizes a Monte Carlo path tracing approach for the first several scattering events, in order to estimate the directional-diffuse component of subsurface scattering, and switches to a dipole diffusion approximation only when the path penetrates deeply enough into the surface. By combining the accuracy of Monte Carlo integration with the efficiency of the dipole diffusion approximation, our hybrid method produces results as accurate as full Monte Carlo simulations at a speed comparable to the Jensen et al. approximation, thus extending its usefulness to a much wider range of materials.en_US
dc.publisherThe Eurographics Associationen_US
dc.subjectCategories and Subject Descriptors (according to ACM CCS): I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism I.3.3 [Computer Graphics]: Picture/Image generationen_US
dc.titleA Hybrid Monte Carlo Method for Accurate and Efficient Subsurface Scatteringen_US
dc.description.seriesinformationEurographics Symposium on Rendering (2005)en_US


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