关键词: 色彩校正, 视网膜皮层理论, 三色学说, 对立学说

Abstract: This paper proposes a hierarchical color correction algorithm which is based on the retinex theory and color vision theories. In order to ensure the accuracy of color correction, it uses hierarchical color correction algorithm. To reduce the amount of computation, it simplifies the hierarchical color correction model. In order to get more reasonable overall classification, it introduces the trichromatic theory. And to extract better high-light regions, it refers to the retinex theory which processes three channels separately. While in order to get better pixel correction coefficient, it bases the theory on opponent color theory to calculate chromatic aberration as well as takes the different effects between spatial distance and Euclidean distance into account to calculate the coefficient. In a word, it combines the retinex theory and the color vision theories, and it further improves the existing hierarchical color correction algorithm. What’s more, the method has been tested on color cast images to testify its rationality and practicality on imitating human being’s color constancy capacity, and the results suggest that the algorithm works well on non-uniform multi-light color cast images.

Key words: color correction, retinex theory, trichromatic theory, opponent colors theory