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2008

A layered, heterogeneous reflectance model for acquiring and rendering human skin

8 years 9 months ago
A layered, heterogeneous reflectance model for acquiring and rendering human skin
We introduce a layered, heterogeneous spectral reflectance model for human skin. The model captures the inter-scattering of light among layers, each of which may have an independent set of spatially-varying absorption and scattering parameters. For greater physical accuracy and control, we introduce an infinitesimally thin absorbing layer between scattering layers. To obtain parameters for our model, we use a novel acquisition method that begins with multi-spectral photographs. By using an inverse rendering technique, along with known chromophore spectra, we optimize for the best set of parameters for each pixel of a patch. Our method finds close matches to a wide variety of inputs with low residual error. We apply our model to faithfully reproduce the complex variations in skin pigmentation. This is in contrast to most previous work, which assumes that skin is homogeneous or composed of homogeneous layers. We demonstrate the accuracy and flexibility of our model by creating complex s...
Craig Donner, Tim Weyrich, Eugene d'Eon, Ravi Rama
Added 28 Jan 2011
Updated 28 Jan 2011
Type Journal
Year 2008
Where TOG
Authors Craig Donner, Tim Weyrich, Eugene d'Eon, Ravi Ramamoorthi, Szymon Rusinkiewicz
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