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Proceedings Paper

Index of refraction estimation from Stokes parameters with diffuse scattering consideration
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Paper Abstract

Remote sensing of the refractive index of a target surface has important application for detection and classification tasks. In this paper, we introduce a modified pBRDF model with a diffuse scattering term and apply it in the development of a method to jointly estimate the refractive index, slope variance roughness and diffuse scattering parameter from a series of Stokes parameter measurements of a surface. This work is a significant extension of prior work involving degree-of-polarization (DOP) measurements. Numerical trials are presented that indicate diffuse scattering can significantly affect the surface parameter estimation and estimation accuracy improves considerably by including the diffuse component in the scattering model. We also illustrate that using Stokes measurements for the estimation provides more accuracy than using DOP measurements for a limited number of observations. The estimation approach is applied to Stokes and DOP measurements of several material surfaces published previously in the literature and the parameter estimation produces curves that have excellent correspondence with the measurement values.

Paper Details

Date Published: 4 May 2016
PDF: 12 pages
Proc. SPIE 9853, Polarization: Measurement, Analysis, and Remote Sensing XII, 985304 (4 May 2016); doi: 10.1117/12.2223951
Show Author Affiliations
Hanyu Zhan, New Mexico State Univ. (United States)
David G. Voelz, New Mexico State Univ. (United States)
Sang-Yeon Cho, New Mexico State Univ. (United States)

Published in SPIE Proceedings Vol. 9853:
Polarization: Measurement, Analysis, and Remote Sensing XII
David B. Chenault; Dennis H. Goldstein, Editor(s)

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