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Pattern Recognition, International Conference on (2006)
Hong Kong
Aug. 20, 2006 to Aug. 24, 2006
ISSN: 1051-4651
ISBN: 0-7695-2521-0
pp: 543-546
Hossein Ragheb , Bu-Ali Sina University, Hamedan, Iran.
Edwin R. Hancock , University of York, York, YO10 5DD, UK.
ABSTRACT
A new model for the scattering of light from layered surfaces with boundaries of variable roughness is introduced. The model contains a surface scattering component together with a subsurface scattering component. The former component corresponds to the roughness on the upper surface boundary and is modeled using the modified Beckmann model. The latter component accounts for both refraction due to Fresnel transmission through the layer and rough scattering at the lower layer boundary. By allowing independent roughness parameters for each surface boundary we can achieve excellent fits of the model to the measured BRDF data. We experiment with BRDF data from skin surface samples (human volunteers) and show that the new model outperforms alternative variants of the Beckmann model and the Lafortune et al. reflectance model.
INDEX TERMS
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CITATION

E. R. Hancock and H. Ragheb, "Reflectance from Surfaces with Layers of Variable Roughness," 2006 18th International Conference on Pattern Recognition(ICPR), Hong Kong, 2006, pp. 543-546.
doi:10.1109/ICPR.2006.987
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