Nagy A L, Eskew R T, Boynton R M
J Opt Soc Am A. 1987 Apr;4(4):756-68. doi: 10.1364/josaa.4.000756.
Color-discrimination ellipses derived from the variability of color-matching data of six observers are analyzed in a normalized constant-luminance cone-excitation space. The analysis shows that the ellipses do not vary significantly in shape with chromaticity, observer, or experimental conditions. The discrimination contours are predictable from the thresholds on the two cardinal axes of this space; these are used to normalize the data at each chromaticity for each observer. Thresholds on these two axes vary with chromaticities, individuals, and experimental conditions in accordance with simple and familiar laws.
在归一化的恒定亮度锥体激发空间中，分析了从六个观察者的颜色匹配数据变异性得出的颜色辨别椭圆。分析表明，这些椭圆的形状在色度、观察者或实验条件方面没有显著变化。辨别轮廓可根据该空间两个基轴上的阈值预测；这些阈值用于对每个观察者在每个色度下的数据进行归一化。这两个轴上的阈值根据简单且常见的规律随色度、个体和实验条件而变化。
