A Microfacet Based Coupled Specular-Matte BRDF Model with Importance Sampling

@inproceedings{Kelemen2001AMB,
  title={A Microfacet Based Coupled Specular-Matte BRDF Model with Importance Sampling},
  author={Csaba Kelemen and L{\'a}szl{\'o} Szirmay-Kalos},
  year={2001}
}
This paper presents a BRDF model based on the analysis of the photon collisions with the microfacets of the surface. The new model is not only physically plausible, i.e. symmetric and energy conserving, but provides other important features of real materials, including the off-specular peak and the mirroring limit case. Using theoretical considerations the reflected light is broken down to a specular component representing single reflections and a matte component accounting for multiple… CONTINUE READING
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