retinex
Retinex is a theory and a set of algorithms developed to explain and model human color perception and visual adaptation. Proposed by Edwin Land, the creator of Polaroid, Retinex attempts to describe how the brain processes visual information to perceive the color and brightness of objects independently of the illumination conditions. The term "Retinex" is a portmanteau of "retina" and "cortex," suggesting that both retinal processing and cortical interpretation are involved in this phenomenon.
The core idea behind Retinex is that the perceived color of an object is determined by the
Various Retinex algorithms have been developed to computationally simulate this process. These algorithms typically involve decomposing