ASTM D2244-2007 仪器测量颜色坐标中允许色差和色差的计算用标准实施规程
【英文标准名称】: Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates 【原文标准名称】: 仪器测量颜色坐标中允许色差和色差的计算用标准实施规程 【标准号】: ASTM D2244-2007 【标准状态】: 现行 【国别】: 【发布日期】: 2007 【实施或试行日期】: 【发布单位】: 美国材料与试验协会(ASTM)【起草单位】: E12.04【标准类型】: (Practice)【标准水平】: ()【中文主题词】: 计算方法;涂层;颜色;色差;数学计算;测量;光学;涂漆;涂料;工艺【英文主题词】: color; color difference; color metrics; color spaces; color tolerances;【摘要】: 1.1 This practice covers the calculation, from instrumentally measured color coordinates based on daylight illumination, of color tolerances and small color differences between opaque specimens such as painted panels, plastic plaques, or textile swatches. Where it is suspected that the specimens may be metameric, that is, possess different spectral curves though visually alike in color, Practice D 4086 should be used to verify instrumental results. The tolerances and differences determined by these procedures are expressed in terms of approximately uniform visual color perception in CIE 1976 CIELAB opponent-color space (1), CMC tolerance units (2), CIE94 tolerance units (3), the DIN99 color difference formula given in DIN 6176 (4), or the new CIEDE2000 color difference units (5).1.2 For product specification, the purchaser and the seller shall agree upon the permissible color tolerance between test specimen and reference and the procedure for calculating the color tolerance. Each material and condition of use may require specific color tolerances because other appearance factors, (for example, specimen proximity, gloss, and texture), may affect the correlation between the magnitude of a measured color difference and its commercial acceptability.1.3 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 requirements prior to use.【中国标准分类号】: A26【国际标准分类号】: 17_180_20【页数】: 10P.;A4【正文语种】:
谢谢分享！！！！！！！！！！！！！！！！
页:
[1]