Worthey J A, Brill M H
J Opt Soc Am A. 1986 Oct;3(10):1708-12. doi: 10.1364/josaa.3.001708.
The properties of constancy models based on the proportionality rule of von Kries are examined in a series of simplified examples. It is found that the breadth of receptor-sensitivity functions causes metamerism, thwarting color constancy. Overlap of these functions limits the accuracy of von Kries adaptation for a more subtle reason: it causes nonzero off-diagonal elements in the transformation matrix relating object reflectance to receptor stimulations. Such off-diagonal elements make von Kries adaptation an inexact color-constancy scheme, even when the illuminant is restricted to prevent metamerism.
在一系列简化示例中，对基于冯·克里斯比例规则的恒常性模型的属性进行了研究。结果发现，受体敏感性函数的宽度会导致同色异谱现象，从而阻碍颜色恒常性。这些函数的重叠限制了冯·克里斯适应的准确性，原因更为微妙：它会导致在将物体反射率与受体刺激相关联的变换矩阵中出现非零非对角元素。即使限制光源以防止同色异谱现象，这种非对角元素也会使冯·克里斯适应成为一种不精确的颜色恒常性方案。
