Title :
Investigation on the Torrance-Sparrow specular BRDF model
Author :
Meister, Gerhard ; Wiemker, Rafael ; Monno, René ; Spitzer, Hartwig ; Strahler, Alan
Author_Institution :
II. Inst. fur Experimentalphys., Hamburg Univ., Germany
Abstract :
To describe the directional reflectance characteristics of a specularly reflecting rough surface, Torrance and Sparrow (1967) developed a bidirectional reflectance distribution function (BRDF) model based on geometrical optics. In this study their model is confirmed by a ray-tracing-like simulation, using the same assumptions as in the analytical derivation. The authors also present a simple empirical function that captures the basic features of the analytical model quite well and has been used successfully in BRDF inversion problems including surfaces like roof cover materials and grass canopy
Keywords :
ray tracing; reflectivity; remote sensing; Torrance-Sparrow specular BRDF model; analytical model; bidirectional reflectance distribution function; directional reflectance characteristics; empirical function; geometrical optics; grass canopy; inversion problems; ray-tracing-like simulation; remote sensing; roof cover materials; specularly reflecting rough surface; Analytical models; Geometrical optics; Light scattering; Optical scattering; Postal services; Reflectivity; Remote sensing; Rough surfaces; Solid modeling; Surface roughness;
Conference_Titel :
Geoscience and Remote Sensing Symposium Proceedings, 1998. IGARSS '98. 1998 IEEE International
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4403-0
DOI :
10.1109/IGARSS.1998.703752
