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20 August 2020 Comparison of the accuracy of Rayleigh-Rice polarization factors to improve microfacet pBRDF models
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Abstract
Microfacet BRDF models describe how light reflects off surfaces. Previous analysis found unpolarized data fitted to a microfacet BRDF model that approximated wave optics factor, Q for Fresnel reflectance and geometric attenuation terms was found to be more physically accurate. This work builds on those findings to examine pp and ss polarization cases individually, discovering that pp parameters fit the data better than ss parameters in 13/14 cases. This is accomplished for a variety of materials at different incident angles, and trends are determined to guide future work in refining microfacet pBRDF models.
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Rachel L. Wolfgang, Samuel D. Butler, and Michael A. Marciniak "Comparison of the accuracy of Rayleigh-Rice polarization factors to improve microfacet pBRDF models", Proc. SPIE 11485, Reflection, Scattering, and Diffraction from Surfaces VII, 114850H (20 August 2020); https://doi.org/10.1117/12.2568042
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