A practical model for subsurface light transport

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A practical model for subsurface light transport

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International Conference on Computer Graphics and Interactive Techniques archive
Proceedings of the 28th annual conference on Computer graphics and interactive techniques table of contents

Pages: 511 - 518

Year of Publication: 2001

ISBN:1-58113-374-X

Authors

Henrik Wann Jensen	Stanford University
Stephen R. Marschner	Stanford University
Marc Levoy	Stanford University
Pat Hanrahan	Stanford University

Sponsor

SIGGRAPH: ACM Special Interest Group on Computer Graphics and Interactive Techniques

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ACM New York, NY, USA

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Downloads (6 Weeks): 17, Downloads (12 Months): 221, Citation Count: 97

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ABSTRACT

This paper introduces a simple model for subsurface light transport in translucent materials. The model enables efficient simulation of effects that BRDF models cannot capture, such as color bleeding within materials and diffusion of light across shadow boundaries. The technique is efficient even for anisotropic, highly scattering media that are expensive to simulate using existing methods. The model combines an exact solution for single scattering with a dipole point source diffusion approximation for multiple scattering. We also have designed a new, rapid image-based measurement technique for determining the optical properties of translucent materials. We validate the model by comparing predicted and measured values and show how the technique can be used to recover the optical properties of a variety of materials, including milk, marble, and skin. Finally, we describe sampling techniques that allow the model to be used within a conventional ray tracer.

REFERENCES

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