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A Survey of Shading and Reflectance Models
(Blackwell Science Ltd and the Eurographics Association, 1994)
Since the beginning of computer graphics, three decades ago, a large number of models intended to describe the behaviour of light on a given point of a surface have been proposed. Almost every author uses his own terminology ...
An Inexpensive BRDF Model for Physically-based Rendering
(Blackwell Science Ltd and the Eurographics Association, 1994)
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 ...