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Proceedings Paper

The Theory And Measurement Of Bidirectional Reflectance Distribution Function (Brdf) And Bidirectional Transmittance Distribution Function (BTDF)
Author(s): F O Bartell; E. L. Dereniak; W. L Wolfe
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Paper Abstract

The concepts of BRDF (Bidirectional Reflectance Distribution Function) and BTDF (Bidirectional Transmittance Distribution Function) are defined and discussed as being the ratios of differential outputs of radiance divided by differential inputs of irradiance. Appropriate measurement arrangements and procedures are presented, and the problems are described that are involved in going from the differentials of theory to the finite quantities of measurement. Finally appropriate data reduction schemes are given for determining BRDF and BTDF from these measurements.

Paper Details

Date Published: 3 March 1981
PDF: 7 pages
Proc. SPIE 0257, Radiation Scattering in Optical Systems, (3 March 1981); doi: 10.1117/12.959611
Show Author Affiliations
F O Bartell, University of Arizona (United States)
E. L. Dereniak, University of Arizona (United States)
W. L Wolfe, University of Arizona (United States)


Published in SPIE Proceedings Vol. 0257:
Radiation Scattering in Optical Systems
Gary H. Hunt, Editor(s)

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