1.1 本规程提供了从物体颜色样本的光谱反射率、透射率或辐射度数据中获得CIE三刺激值所需的值和实际计算程序。 1.2 给出了根据光谱测量计算CIE三刺激值的程序和标准值表 十、 CIE 1931标准观测器的Y、Z和色度坐标X、Y和X 10 Y 10 Z 10 和x 10 . y 10 对于CIE 1964补充标准观察员 . 1.3 标准值包括六种CIE标准光源和三种CIE推荐荧光光源的光谱功率。 1.4 包括以下情况的程序:数据仅在比建议的波长范围更有限的波长范围内可用，或测量间隔比CIE建议的更宽。本规程适用于根据规程获得的光谱数据 E1164 测量间隔为1、5、10或20 nm。 1.5 包括对光谱数据和未进行带通相关性校正的情况下的程序。对于未校正的情况，假设用于获取数据的仪器的光谱带通近似等于测量间隔，并且呈三角形。据信，这些选择符合最广泛使用的工业实践。 1.6 该实践包括将结果转换为CIE系统（如CIELAB和CIELUV）中的颜色空间的过程 ( 3. ) . 实践中给出了计算这些系统和其他系统中色差的公式 D2244 . 1.7 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.8 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 ====意义和用途====== 5.1 CIE色度系统提供数字规格，用于指示当由CIE标准观察者观察时，颜色刺激对是否匹配。CIE颜色系统无意提供视觉上均匀的色差比例或描述视觉上感知的颜色外观。 5.2 本规程规定了三刺激值的计算 十、 Y，Z 和色度坐标 x、 y 它可以直接用于心理物理颜色刺激规范，或者可以转换为几乎视觉上统一的色阶，例如CIELAB和CIELUV。 研究、生产控制、色差计算、颜色规范和设置颜色容差时，首选统一的色阶。材料或物体的外观并非完全由其心理物理颜色的数值评估来确定，因为外观可能会受到其他属性（如光泽或纹理）的影响。

1.1 This practice provides the values and practical computation procedures needed to obtain CIE tristimulus values from spectral reflectance, transmittance, or radiance data for object-color specimens. 1.2 Procedures and tables of standard values are given for computing from spectral measurements the CIE tristimulus values X, Y, Z, and chromaticity coordinates x, y for the CIE 1931 standard observer and X 10 , Y 10 , Z 10 and x 10 . y 10 for the CIE 1964 supplementary standard observer . 1.3 Standard values are included for the spectral power of six CIE standard illuminants and three CIE recommended fluorescent illuminants. 1.4 Procedures are included for cases in which data are available only in more limited wavelength ranges than those recommended, or for a measurement interval wider than that recommended by the CIE. This practice is applicable to spectral data obtained in accordance with Practice E1164 with 1-, 5-, 10-, or 20-nm measurement interval. 1.5 Procedures are included for cases in which the spectral data are, and those in which they are not, corrected for bandpass dependence. For the uncorrected cases, it is assumed that the spectral bandpass of the instrument used to obtain the data was approximately equal to the measurement interval and was triangular in shape. These choices are believed to correspond to the most widely used industrial practice. 1.6 This practice includes procedures for conversion of results to color spaces that are part of the CIE system, such as CIELAB and CIELUV ( 3 ) . Equations for calculating color differences in these and other systems are given in Practice D2244 . 1.7 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== 5.1 The CIE colorimetric systems provide numerical specifications that are meant to indicate whether or not pairs of color stimuli match when viewed by a CIE standard observer. The CIE color systems are not intended to provide visually uniform scales of color difference or to describe visually perceived color appearances. 5.2 This practice provides for the calculation of tristimulus values X, Y, Z and chromaticity coordinates x, y that can be used directly for psychophysical color stimulus specification or that can be transformed to nearly visually uniform color scales, such as CIELAB and CIELUV. Uniform color scales are preferred for research, production control, color-difference calculation, color specification, and setting color tolerances. The appearance of a material or an object is not completely specified by the numerical evaluation of its psychophysical color, because appearance can be influenced by other properties such as gloss or texture.