Brainard D H, Wandell B A
J Opt Soc Am A. 1986 Oct;3(10):1651-61. doi: 10.1364/josaa.3.001651.
If color appearance is to be a useful feature in identifying an object, then color appearance must remain roughly constant when the object is viewed in different contexts. People maintain approximate color constancy despite variation in the color of nearby objects and despite variation in the spectral power distribution of the ambient light. Land's retinex algorithm is a model of human color constancy. We analyze the retinex algorithm and discuss its general properties. We show that the algorithm is too sensitive to changes in the color of nearby objects to serve as an adequate model of human color constancy.
如果颜色外观要成为识别物体的一个有用特征，那么当在不同环境中观察该物体时，颜色外观必须大致保持恒定。尽管附近物体的颜色存在变化，且环境光的光谱功率分布也存在变化，但人们仍能保持近似的颜色恒常性。兰德的视网膜皮层算法是一种人类颜色恒常性模型。我们分析了该视网膜皮层算法并讨论了其一般特性。我们表明，该算法对附近物体颜色的变化过于敏感，不足以作为人类颜色恒常性的充分模型。
