Cornell University Program of Computer Graphics
A practical, comprehensive light reflection model.Hongsong Li and Kenneth E. Torrance.
Technical report PCG-05-03, Program of Computer Graphics, Cornell University, April 2005.
A new comprehensive reflectance model is presented. The model accounts for both surface and subsurface local light scattering. The model combines, for the first time, highly-efficient wave optics components and rigorous empirical components. The model displays a wide range of directional and non-directional light scattering phenomena and compares favorably against extensive, detailed reflectance measurements. The model is analytic and suitable for Computer Graphics applications. Benchmark timings are comparable with that of current less comprehensive models (Lafortune, Ward, and Cook-Torrance models).
This paper is available as a PDF file LT05c.pdf (2.7M).