A Simple Layered RGB BRDF Model

Xavier Granier (1) , Wolfgang Heidrich (1)

1 UBC-Computer Science - Computer Science Department

Many natural objects, and in particular layered materials, have non-linear reflection behavior along the wavelengths. An accurate representation of phenomena such as interference and color dispersion generally requires a fine spectral representation of light instead of the commonly used RGB components. In this article, we introduce and experiment with a general approach to create similar and convincing effects, with a simple RGB BRDF model. We present a model for both specular and a diffuse reflection, and implement them into software and hardware accelerated rendering process.

Mots clés: Shading; BRDF

Domaines: Synthèse d'image et réalité virtuelle [cs.GR]; Modélisation et simulation

Xavier Granier, Wolfgang Heidrich. A Simple Layered RGB BRDF Model. Graphical Models, 2003, 65 (4), pp.171-184. ⟨10.1016/S1524-0703(03)00042-0⟩. ⟨hal-00308260v2⟩