An Analytic BRDF for Materials with Spherical Lambertian Scatterers

We present a new analytic BRDF for porous materials comprised of spherical Lambertian scatterers. The BRDF has a single parameter: the albedo of the Lambertian particles. The resulting appearance exhibits strong back scattering and saturation effects that height-field-based models such as Oren-Nayar cannot reproduce.

Authors: 
Eugene d'Eon (NVIDIA)
Publication Date: 
Monday, June 21, 2021
Research Area: