Limitations of surface-color and apparent-color constancy.
Limitations of surface-color and apparent-color constancy.
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DOI：
10.1364/josaa.13.001622
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发表时间：
1996-08
期刊：
影响因子：
--
通讯作者：
I. Kuriki;K. Uchikawa
中科院分区：
文献类型：
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作者：
I. Kuriki;K. Uchikawa
颜色恒定机制已在许多研究中进行了研究和讨论。然而，几乎没有人试图揭示颜色稳定性如何随着其条件变得不理想而恶化。我们使用两个标准进行了一系列不对称颜色匹配实验：表面颜色匹配和表观颜色匹配。经过短暂的适应，随着周围添加了色彩提示，颜色恒定程度也随之增加。在黑色包围条件下，测试刺激出现自发光，并且所选匹配刺激的色度与测试刺激的物理色度相同，表明完全缺乏颜色恒常性。经过 15 分钟的光源预适应，表面颜色匹配在光源变化下表现出几乎完美的颜色恒定性。在这两种适应条件下，随着光源的色度偏离 6,500-K 光源，在 1,700-K 和 30,000-K 光源之间匹配的色移与完美颜色恒定性的预期值逐渐增加。在 1,000-K 光源下，表面颜色外观变得完全消色差，并且颜色稳定性完全丧失。我们的结果表明，即使对光源进行短暂的适应，周围刺激的贡献也足以实现相当程度的颜色恒定性，但对光源的完全适应有助于实现几乎完美的颜色恒定性。
Color-constancy mechanisms have been studied and discussed in a number of investigations. However, there has been little attempt to reveal how color constancy deteriorates as the conditions for it become less than optimal. We carried out a series of asymmetric color-matching experiments, using two criteria: surface-color match and apparent-color match. With brief adaptation the degree of color constancy increased as chromatic cues were added in the surround. In the condition of black surround, the test stimuli appeared self-luminous, and chromaticities of the chosen matching stimuli were the same as the physical chromaticities of the test stimulus, indicating a total deficiency of color constancy. With 15 min of preadaptation to the illuminant, the surface-color matches showed almost perfect color constancy under illuminant change. In both adaptation conditions, the chromatic-shift of matches from what would be expected for perfect color constancy increased gradually between 1,700- and 30,000-K illuminant, as chromaticity of the illuminant departed from 6,500-K illuminant. Under 1,000-K illuminant the surface-color appearance became totally achromatic, and color constancy was completely lost. Our results show that, even with brief adaptation to the illuminant, the contribution of the surrounding stimulus is large enough to achieve a fair degree of color constancy, but complete adaptation to the illuminant helps to achieve almost perfect color constancy.