基于均匀颜色空间色度匹配系数量化精度分析  

Analysis of the Precision of Chroma Matching Coefficient Based on Uniform Color Space

作　　者：郝亚茹[1,2] 王瑞光[1] 陈宇[3,4] 汪洋[1,2] 张鑫[1,2] 丁铁夫[1] 杜国同[3,4] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130033 [2]中国科学院研究生院,北京1300039 [3]吉林大学集成光电子学国家重点实验室,长春130012 [4]吉林大学电子科学与工程学院,长春130023

出　　处：《半导体光电》2009年第5期778-784,共7页Semiconductor Optoelectronics

基　　金：中国科学院东北振兴科技行动计划重点项目(DBZX-2-017)

摘　　要：针对全彩LED显示屏色度匹配系数量化精度存在的问题,提出了一种基于L*a*b*均匀颜色空间对其进行分析的方法。首先,将L*a*b*均匀颜色空间的颜色宽容量,映射于xyY系统,得到不同颜色区域的颜色宽容量;然后,以CIE-XYZ系统为理论依据,对同基色显示的不同颜色的色度进行匹配,分析在三基色混合过程中得到的混合步长与三维颜色宽容范围的函数关系;最后利用此函数和对应于xyY系统中的颜色宽容量对色度匹配过程中混合步长进行分析,经计算,得到各色度匹配过程的混合步长值,从而转化为色度匹配系数量化精度。For full-color LED, there is a problem of quantization precision of color matching coefficient. In order to solve this problem, an analysis method based on the L＊ a＊b＊ Uniform Color Space is proposed. First of all, the color tolerance of the Uniform Color Space was mapped to the L＊ a＊ b＊ system, so the color wide-capacity of the different primary color regions could be obtained. Secondly, using the CIE-XYZ system as the theoretical basis, the different colors shown in the same primary color could be matched, and the functional relationship between the mixed-step length during the process of three-color mixing and the three-dimensional color tolerance range could be established. Finally, the mixed color matching step could be analyzed by using this function and the color tolerance of the xyY system . And the mixed matching step length values which could be transformed into the quantization precision of color matching coefficient were calculated.

关 键 词：色度匹配精度 颜色宽容量 混合步长 

分 类 号：TM873[电气工程—高电压与绝缘技术]