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An Inexpensive BRDF Model for Physically‐based Rendering
Author(s) -
Schlick Christophe
Publication year - 1994
Publication title -
computer graphics forum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 120
eISSN - 1467-8659
pISSN - 0167-7055
DOI - 10.1111/1467-8659.1330233
Subject(s) - bidirectional reflectance distribution function , rendering (computer graphics) , computer science , computer graphics , computer graphics (images) , monte carlo method , homogeneous , graphics , reflection (computer programming) , simplicity , algorithm , computational science , reflectivity , statistical physics , optics , mathematics , physics , quantum mechanics , programming language , statistics
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).