@techreport {1218, title = {Using Helmholtz reciprocity in variable resolution BSDFs in Radiance}, year = {2011}, month = {11/2011}, institution = {Bartenbach L-chtLabor}, author = {David Geisler-Moroder} } @techreport {1219, title = {Validation of variable resolution BSDFs in Radiance}, year = {2011}, month = {11/2011}, institution = {Bartenbach L-chtLabor}, abstract = {

In this document results of the validation of the "Variable Resolution BSDF" approach as presented at the 10th International Radiance Workshop (G.Ward, A.McNeil, "A Variable-resolution BSDF Implementation") are presented.

Variable-resolution BSDFs are generated with genBSDF for the RADIANCE native materials plastic, trans, and glass (isotropic) and plastic2 and trans2 (anisotropic). Both, the maximum resolution (1024 x 1024 patches or 4096 x 4096 patches) as well as the number of specular samples (16 or 64) are varied.

The resulting data is reduced with rttree_reduce at various degrees (0\%, i.e. no reduction, 95\%, i.e. reduction by approximately 95\%, and 99\%, i.e. only about 1\% of data left).

}, author = {David Geisler-Moroder} }