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彩色传递的客观测试与画面质量的主观评估之间存在着很大的差异。检验彩色传递的优劣必须定量测定色差。所谓色差实质上就是视觉的差别,但是到目前为止尚无测量视觉的方法。所以在生理学方面视觉的发量使用特定的概念——色差阈。色差阈便是在一定观察条件下人眼所能察觉的最小颜色差
There is a big difference between the subjective assessment of the objective test of color delivery and the picture quality. Test the merits of color transfer must be measured quantitatively. The so-called color difference is essentially the visual difference, but so far no measure of visual methods. Therefore, the physiology of the amount of visual use of specific concepts - color threshold. The color difference threshold is the smallest color difference that can be perceived by the human eye under certain observation conditions