Robust categorization of microfacet BRDF models to enable flexible application-specific BRDF adaptation

Samuel D. Butler; Michael A. Marciniak

doi:10.1117/12.2061134

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5 September 2014 Robust categorization of microfacet BRDF models to enable flexible application-specific BRDF adaptation

Samuel D. Butler, Michael A. Marciniak

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Proceedings Volume 9205, Reflection, Scattering, and Diffraction from Surfaces IV; 920506 (2014) https://doi.org/10.1117/12.2061134
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

Since the development of the Torrance-Sparrow bidirectional re ectance distribution function (BRDF) model in 1967, several BRDF models have been created. Previous attempts to categorize BRDF models have relied upon somewhat vague descriptors, such as empirical, semi-empirical, and experimental. Our approach is to instead categorize BRDF models based on functional form: microfacet normal distribution, geometric attenua- tion, directional-volumetric and Fresnel terms, and cross section conversion factor. Several popular microfacet models are compared to a standardized notation for a microfacet BRDF model. A library of microfacet model components is developed, allowing for creation of unique microfacet models driven by experimentally measured BRDFs.

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Samuel D. Butler and Michael A. Marciniak "Robust categorization of microfacet BRDF models to enable flexible application-specific BRDF adaptation", Proc. SPIE 9205, Reflection, Scattering, and Diffraction from Surfaces IV, 920506 (5 September 2014); https://doi.org/10.1117/12.2061134

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