Computer aided color appearance design using environment map based lighting

Authors:
C. Shimizu;G. W. Meyer
Affiliations:
Department of Computer Science and Engineering and Digital Technology Center, University of Minnesota;Department of Computer Science and Engineering and Digital Technology Center, University of Minnesota
Venue:
Computational Aesthetics'05 Proceedings of the First Eurographics conference on Computational Aesthetics in Graphics, Visualization and Imaging
Year:
2005

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Abstract

A BRDF approximation is developed that is suitable for interactive color appearance design in direct lighting provided by environment maps. The BRDFs are approximated as a linear combination of cosine lobes with a fixed set of specular exponents. A nonlinear optimization routine is used to fit the cosine lobes to BRDFs appropriate for a specific color appearance design application: automotive paint. Modification and rendering of the BRDF is made possible by linearly combining prefiltered environment maps for each cosine lobe in real time.