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An Illumination Model for a Skin Layer Bounded by Rough Surfaces

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Rendering Techniques 2001 (EGSR 2001)

Part of the book series: Eurographics ((EUROGRAPH))

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Abstract

In this paper we present a novel illumination model that takes into account multiple anisotropic scattering in a layer bounded by two rough surfaces. We compute the model by a discrete-ordinate solution of the equation of radiative transfer. This approach is orders of magnitude faster than a Monte Carlo simulation and does not suffer from any noisy artifacts. By fitting low order splines to our results we are able to build analytical shaders. This is highly desirable since animators typically want to texture map the parameters of such a shader for higher realism. We apply our model to the important problem of rendering human skin. Our model does not seem to have appeared before in the optics literature. Most previous models did not handle rough surfaces at the skin’s boundary. Also we introduce a simple analytical bidirectional transmittance distribution function (BTDF) for an isotropic rough surface by generalizing the Cook-Torrance model.

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Author information

Authors and Affiliations

  1. Alias | wavefront, 1218 Third Ave, 8th Floor, Seattle, WA, 98101, USA

    Jos Stam

Authors
  1. Jos Stam
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Editor information

Editors and Affiliations

  1. Institute of Computer Science, Harvard University, Cambridge, Mass., USA

    Steven J. Gortler

  2. Max-Planck-Institut fĂĽr Informatik, SaarbrĂĽcken, Germany

    Karol Myszkowski

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© 2001 Springer-Verlag Wien

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Stam, J. (2001). An Illumination Model for a Skin Layer Bounded by Rough Surfaces. In: Gortler, S.J., Myszkowski, K. (eds) Rendering Techniques 2001. EGSR 2001. Eurographics. Springer, Vienna. https://doi.org/10.1007/978-3-7091-6242-2_4

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  • DOI: https://doi.org/10.1007/978-3-7091-6242-2_4

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  • Publisher Name: Springer, Vienna

  • Print ISBN: 978-3-211-83709-2

  • Online ISBN: 978-3-7091-6242-2

  • eBook Packages: Springer Book Archive

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