Title

Analytical fitting model for rough-surface BRDF

Authors

Authors

I. G. E. Renhorn;G. D. Boreman

Comments

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Abbreviated Journal Title

Opt. Express

Keywords

BIDIRECTIONAL REFLECTANCE; DIELECTRIC SURFACES; SCATTERING; Optics

Abstract

A physics-based model is developed for rough surface BRDF, taking into account angles of incidence and scattering, effective index, surface autocovariance, and correlation length. Shadowing is introduced on surface correlation length and reflectance. Separate terms are included for surface scatter, bulk scatter and retroreflection. Using the FindFit function in Mathematica, the functional form is fitted to BRDF measurements over a wide range of incident angles. The model has fourteen fitting parameters; once these are fixed, the model accurately describes scattering data over two orders of magnitude in BRDF without further adjustment. The resulting analytical model is convenient for numerical computations. (C) 2008 Optical Society of America.

Journal Title

Optics Express

Volume

16

Issue/Number

17

Publication Date

1-1-2008

Document Type

Article

Language

English

First Page

12892

Last Page

12898

WOS Identifier

WOS:000259268700050

ISSN

1094-4087

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