Perceptual gloss space BRDF projection, uniformity validation, and lightness distance metric

Abstract

A perceptually uniform gloss space was defined in Pellacini et al. [2000] as a reparameterization of the Ward BRDF model. Two dimensions, distinctness-of-image gloss and contrast gloss, were found to be enough to describe gloss perception, and the CIELAB lightness function was added to represent the diffuse component.