Dichromatic reflectance model

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In Shafer’s dichromatic reflection model, scene radiance has two components:

cb is the body reflected component
cs is the surface (interface) reflected component
mb and ms are scale factors depending on illumination, view directions and surface orientation.

Separation algorithm[edit]

BREN (body reflection essence-neuter) model based[1][edit]

Body essence is an entity invariant to interface reflection, and has two degrees of freedom. The Gaussian coefficient generalizes a conventional simple thresholding scheme, and it provides detailed use of body color similarity.[1]


  1. ^ a b C. Je and H.-M. Park. BREN: Body Reflection Essence-Neuter Model for Separation of Reflection Components. Optics Letters, Volume 40, Issue 9, pp. 1940-1943, May 1, 2015.