A Study on Retinex Theory and Illumination Effects I
Retinex Theory was initially developed by Edwin H. Land in 1964 and further evolution of "reset Retinex" formulated by Land and McCann. It was the first attempt to simulate and explain the human visual system how to perceive color based on experiments using Mondrian patterns. Gradually, several Retinex algorithms have been evolved ever since and applied to many imaging field. Retinex algorithm is actually an image enhancement algorithm based on illumination compensation method. It explains the phenomena of colour constancy and contrast in which it is consider that perceived colors of objects are largely independent of the chromaticity of the light incident upon them. we tried to discuss here a review on basics of retinex agorithms and briefly show how there is change in improvement of traditional retinex algorithm which modify the entropy its average gradient, standard variance which indicates that the images contain more details and information of the source image. In these series, KeyWords Retinex theory, color perception, classification, SSR, MSR