An Inexpensive BDRF Model for Physically based Rendering
Christophe Schlick
Eurographics'94 (Olso, Norway), published in
Computer Graphics Forum, v13, n3, p149-162, September 1994 (516369 bytes)


A new BRDF model is presented which can be viewed as an kind of intermediary model between empirism and theory. Main results of physics are observed (energy conservation, reciprocity rule, microfacet theory) and numerous phenomena involved in light reflection are accounted for, in a physically plausible way (incoherent and coherent reflection, spectrum modifications, anisotropy, self-shadowing, multiple surface and subsurface reflection, differences between homogeneous and heterogeneous materials). The model has been especially intended for computer graphics applications and therefore includes two main features : simplicity (a small number of intuitively understandable parameters controls the model) and efficiency (the formulation provides adequation to Monte-Carlo rendering techniques and/or hardware implementations).

Dernière mise à jour le 10.10.96 par Christophe Schlick