Modified polarimetric bidirectional reflectance distribution function with diffuse scattering: surface parameter estimation

Hanyu Zhan; David G. Voelz

doi:10.1117/1.OE.55.12.123103

8 December 2016 Modified polarimetric bidirectional reflectance distribution function with diffuse scattering: surface parameter estimation

Hanyu Zhan, David G. Voelz

Author Affiliations +

Funded by: U. S. Army Research Laboratory and U.S. Army Research Office

Optical Engineering, Vol. 55, Issue 12, 123103 (December 2016). https://doi.org/10.1117/1.OE.55.12.123103

Abstract

The polarimetric bidirectional reflectance distribution function (pBRDF) describes the relationships between incident and scattered Stokes parameters, but the familiar surface-only microfacet pBRDF cannot capture diffuse scattering contributions and depolarization phenomena. We propose a modified pBRDF model with a diffuse scattering component developed from the Kubelka–Munk and Le Hors et al. theories, and apply it in the development of a method to jointly estimate refractive index, slope variance, and diffuse scattering parameters from a series of Stokes parameter measurements of a surface. An application of the model and estimation approach to experimental data published by Priest and Meier shows improved correspondence with measurements of normalized Mueller matrix elements. By converting the Stokes/Mueller calculus formulation of the model to a degree of polarization (DOP) description, the estimation results of the parameters from measured DOP values are found to be consistent with a previous DOP model and results.

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Hanyu Zhan and David G. Voelz "Modified polarimetric bidirectional reflectance distribution function with diffuse scattering: surface parameter estimation," Optical Engineering 55(12), 123103 (8 December 2016). https://doi.org/10.1117/1.OE.55.12.123103

Published: 8 December 2016

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