Noorlander C, Koenderink J J
J Opt Soc Am. 1983 Nov;73(11):1533-43. doi: 10.1364/josa.73.001533.
Three-dimensional discrimination ellipsoids are presented for a number of representative points in color space. These ellipsoids have been obtained not with the conventional split field but with flickering grating patterns. Thus our study extends the well-known results of Brown and MacAdam [J. Opt. Soc. Am. 39, 808-813 (1949)] to cases in which the image is structured in space and time. As expected, we find that the discrimination ellipsoids depend on the spatiotemporal structure of the stimulus. This has potential consequences for color-difference formulas as used in industry and commerce: no single formula will do when it is important to treat patterns with different structure. We present analytical descriptions, based on the Vos-Walraven [Vision Res. 12, 1327-1365 (1972)] line element augmented with spatiotemporal frequency-dependent coefficients that fit our results reasonably well. For coarse gratings (approximately 1 cycle per degree) or slowly modulated fields (approximately 1 Hz) our results prove to be compatible with the results of Brown and MacAdam obtained with a bipartite 2 degree field.
本文给出了颜色空间中多个代表点的三维辨别椭球体。这些椭球体并非通过传统的分裂视场获得，而是利用闪烁光栅图案得到的。因此，我们的研究将布朗和麦克亚当[《美国光学学会杂志》39, 808 - 813 (1949)]的著名结果扩展到了图像在空间和时间上具有结构的情况。正如预期的那样，我们发现辨别椭球体取决于刺激的时空结构。这对于工商业中使用的色差公式具有潜在影响：当处理具有不同结构的图案很重要时，没有一个单一的公式能适用。我们基于沃斯 - 瓦尔拉文[《视觉研究》12, 1327 - 1365 (1972)]线元，并添加了与时空频率相关的系数，给出了能较好拟合我们结果的解析描述。对于粗光栅（约每度1个周期）或缓慢调制的场（约1赫兹），我们的结果被证明与用二分2度视场获得的布朗和麦克亚当的结果一致。
