Appearance of Interfaced Lambertian Microfacets, using STD Distribution
Mickaël Ribardière, Daniel Méneveaux, Benjamin Bringier, Lionel Simonot · HAL (Le Centre pour la Communication Scientifique Directe) · 2017
This paper presents the use of Student’s T-Distribution (STD) with interfaced Lambertian (IL) microfacets. The resulting model increases the range of materials while providing a very accurate adjustment of appearance. STD has been recently proposed as a generalized distribution of microfacets which includes Beckmann and GGX widely used in computer graphics; IL corresponds to a physical representation of a Lambertian substrate covered with a flat Fresnel interface. We illustrate the appearance variations that can be observed, and discuss the advantages of using such a combination.