Comparison of microfacet BRDF model elements to diffraction BRDF model elements
Document Type
Conference Proceeding
Publication Date
5-21-2015
Abstract
A popular class of BRDF models is the microfacet model, where geometric optics is assumed, but where physical optics effects such as accurate wavelength scaling, important to Hyperspectral Imagery, are lost. More complex physical optics models may more accurately predict the BRDF, but the calculation is time-consuming. These seemingly disparate approaches are compared in detail. The linear systems direction cosine space is compared to microfacet coordinates, and the microfacet models Fresnel reflection in microfacet coordinates is compared to diffraction theory's Fresnel-like term. Similarities and differences between these terms are highlighted to merge these two approaches to the BRDF.
Source Publication
Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXI
Recommended Citation
Samuel D. Butler, Stephen E. Nauyoks, and Michael A. Marciniak "Comparison of microfacet BRDF model elements to diffraction BRDF model elements", Proc. SPIE 9472, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXI, 94720C (21 May 2015); https://doi.org/10.1117/12.2177221
Comments
Copyright © 2015 Society of Photo-Optical Instrumentation Engineers (SPIE).
This conference paper is available through subscription or purchase from the publisher using the DOI link below.
Author Note: Samuel Butler was an AFIT PhD student at the time of this conference. (AFIT-ENP-DS-15-S-021, September 2015)