Newer Images

The following images are basically updated versions of those generated for the SIGGRAPH '92 paper, "Predicting Reflectance Functions from Complex Surfaces", by Stephen H. Westin, James R. Arvo, and Kenneth E. Torrance, or for my eponymous Master's Thesis from Cornell, or during work for those publications.

All images © Stephen H. Westin and Cornell University. All rights reserved.

I have recomputed each image with the following changes:

All images are corrected for a monitor gamma of 2.2.


Bright velvet cushion

Bright velvet cushion, old rendering

Original (1992) image

Bright velvet cushion

New image. I recomputed the BRDF with rounded ends on each fiber, to eliminate the whitish highlight visible in the front center of the cushion.

Dark velvet cushion

Dark velvet cushion, old rendering

Original (1992) image

Dark velvet cushion

New image. The increased brightness reduces the saturation a bit, and starts to show a bit of ringing in the spherical harmonics used to represent the BRDF; this is visible in the front center of the cushion.
Stephen H. Westin westin@earthlink.net
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