问题描述
什么是感知统一的色彩空间？
实验室色彩空间在感知上是统一的，与设备无关吗？
What is perceptually uniform color space ?how Lab color space is perceptually uniform and device independent?
推荐答案
slhck是对的：感性均匀色彩空间确保两种颜色之间的差异（如人眼所感知的）与给定颜色空间内的欧几里德距离成比例。创建 Lab 以满足感知均匀性属性。
slhck is right: a perceptual uniform color space ensures that the difference between two colors (as perceived by the human eye) is proportional to the Euclidian distance within the given color space. Lab was created to satisfy the perceptual uniformity property.
但是，此属性仅在本地满足。对于远距离的颜色，感知的差异不再与欧几里德距离一致。因此，定义了新的距离，例如为了满足局部和全局的感知均匀性。
However, this property is satisfied only locally. For distant colors, the perceived difference is no more in accordance with the Euclidian distance. Therefore, new distances were defined, such as deltaE, CIE76, CIE94, CIE2000 in order to satisfy both local and global perceptual uniformity.
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