一种用于电介质和金属表面的几何光学偏振双向反射分布函数。

A geometrical optics polarimetric bidirectional reflectance distribution function for dielectric and metallic surfaces.

作者信息

Hyde M W, Schmidt J D, Havrilla M J

机构信息

Department of Electrical and Computer Engineering, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433-7765, USA.

出版信息

Opt Express. 2009 Nov 23;17(24):22138-53. doi: 10.1364/OE.17.022138.

DOI:10.1364/OE.17.022138

PMID:19997460

Abstract

A polarimetric bidirectional reflectance distribution function (pBRDF), based on geometrical optics, is presented. The pBRDF incorporates a visibility (shadowing/masking) function and a Lambertian (diffuse) component which distinguishes it from other geometrical optics pBRDFs in literature. It is shown that these additions keep the pBRDF bounded (and thus a more realistic physical model) as the angle of incidence or observation approaches grazing and better able to model the behavior of light scattered from rough, reflective surfaces. In this paper, the theoretical development of the pBRDF is shown and discussed. Simulation results of a rough, perfect reflecting surface obtained using an exact, electromagnetic solution and experimental Mueller matrix results of two, rough metallic samples are presented to validate the pBRDF.

摘要

提出了一种基于几何光学的偏振双向反射分布函数（pBRDF）。该pBRDF包含一个可见性（阴影/遮蔽）函数和一个朗伯（漫反射）分量，这使其与文献中的其他几何光学pBRDF有所区别。结果表明，随着入射角或观测角接近掠射角，这些附加项使pBRDF保持有界（从而成为一个更现实的物理模型），并且能更好地模拟从粗糙反射表面散射的光的行为。本文展示并讨论了pBRDF的理论发展。给出了使用精确电磁解获得的粗糙完美反射表面的模拟结果以及两个粗糙金属样品的实验穆勒矩阵结果，以验证pBRDF。