Optical properties (bidirectional reflection distribution functions) of velvet

被引：52

作者：

Lu, R ^{[1
]}

Koenderink, JJ ^{[1
]}

Kappers, AML ^{[1
]}

机构：

[1] Helmholtz Eye Dis Res Inst, NL-3584 CC Utrecht, Netherlands

来源：

APPLIED OPTICS | 1998年 / 37卷 / 25期

关键词：

D O I：

10.1364/AO.37.005974

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A detailed investigation has been made of the unusual characteristics of the angular distribution of surface scattering from velvet in the visual region. We present a novel method in which samples of velvet fabric are wrapped around a right-circular cylinder so that reemitted radiance can be measured by a digital CCD camera. This setup makes it relatively simple to acquire a large set of bidirectional reflection distribution function (BRDF) samples. The study reveals that, apart from the grazing specular lobe and an anisotropic backscattering peak near 50 degrees, the overall BRDF's are rather uniform across the whole angular span of observation. Attempts are made to relate these scattering characteristics to the physical and the geometrical structure of velvet. (C) 1998 Optical Society of America.

引用

页码：5974 / 5984

页数：11