ISO/CIE 11664-4:2019 比色法 第4部分：CIE 1976 L*a*b*色空间

标准编号：ISO/CIE 11664-4:2019

中文名称：比色法 第4部分：CIE 1976 L*a*b*色空间

英文名称：Colorimetry — Part 4: CIE 1976 L*a*b* colour space

发布日期：2019-06

标准范围

本文件规定了计算CIE 1976 L*a*b*颜色空间坐标的方法，包括亮度、色度和色调的相关性。它包括两种方法，用于计算该空间中的欧几里德距离，以表示感知到的色差大小。本文件适用于使用CIE 1931标准色度系统或CIE 1964标准色度系统的颜色匹配功能计算的三刺激值。本文件可用于说明被认为属于反射或透射物体的颜色刺激，其中-需要比三刺激空间更均匀的维空间。本文件不适用于被视为属于一个区域的颜色刺激，该区域似乎是发射光作为主要光源，或似乎是镜面反射这种光。本文件适用于自发光显示器，如阴极射线管，如果它们被用于模拟反射或发射物体，并且刺激物被适当地标准化。反向变换的计算如附录A所示。

This document specifies a method of calculating the coordinates of the CIE 1976 L*a*b* colour space, including correlates of lightness, chroma and hue. It includes two methods for calculating Euclidean distances in this space to represent the perceived magnitude of colour differences.This document is applicable to tristimulus values calculated using colour-matching functions of the CIE 1931 standard colorimetric system or the CIE 1964 standard colorimetric system. This document can be used for the specification of colour stimuli perceived as belonging to a reflecting or transmitting object, where a three-dimensional space more uniform than tristimulus space is required.This document does not apply to colour stimuli perceived as belonging to an area that appears to be emitting light as a primary light source, or that appears to be specularly reflecting such light.This document is applicable to self-luminous displays, such as cathode ray tubes, if they are being used to simulate reflecting or transmitting objects and if the stimuli are appropriately normalized.Calculating the reverse transformation is shown in Annex A.

标准预览图