基于视锥感光空间的光源相关色温计算  

Calculation of Light Source Corrected Color Temperature Based on Cone Fundamental Space

作　　者：董晓文 徐杨[1] 高程 李长军 Dong Xiaowen;Xu Yang;Gao Cheng;Li Changjun(College of Computer Science and Software Engineering,University of Science and Technology Liaoning,Anshan,Liaoning 114051,China)

机构地区：[1]辽宁科技大学计算机与软件工程学院,辽宁鞍山114051

出　　处：《光学学报》2022年第2期252-259,共8页Acta Optica Sinica

基　　金：国家自然科学基金(61575090,61775169);辽宁省教育厅基本科研项目(LJKZ0310)。

摘　　要：研究了基于视锥响应三刺激值L,M,S导出的不同色品坐标空间和不同比例因子对相关色温(CCT)计算的影响,并比较了计算得到的CCT与标准CCT的差异。在Houser等收集的包含401个光谱功率分布的数据集上进行了测试,测试结果表明,采用比例因子均为1时计算得到的L,M,S直接导出的u_(c)-v_(c)空间表现最好,均值CCT绝对差异,中值CCT绝对差异和最大值CCT绝对差异分别为48,31和851 K。若将L,M,S转换到由配色函数定义的三刺激值空间X_(F)Y_(F)Z_(F)导出的u_(F)-v_(F)空间中计算CCT,计算得到的CCT与标准CCT差异的均值CCT差异,中值CCT差异和最大值CCT差异分别为42,21和540 K。The influence of different chromaticity coordinate spaces and different scale factors derived from the tristimulus values L, M, and S of the cone response on the calculation of correlated color temperature(CCT) is studied, and the difference between the calculated CCT and the standard CCT is compared. Tests are carried out on a data set containing 401 spectral power distributions collected by Houser et al. The test results show that the u_(c)-v_(c) space directly derived from the calculated L, M, and S when the scale factors are all 1 is the best, and the absolute differences of the mean CCT, the median CCT and the maximum CCT are 48, 31 and 851 K, respectively. If the L, M, S are converted to the u_(F)-v_(F) space derived from the tristimulus value space X_(F)Y_(F)Z_(F) defined by the color matching function to calculate the CCT, the mean CCT difference, the median CCT difference and the maximum CCT difference between the calculated CCT and the standard CCT are 42, 21 and 540 K, respectively.

关 键 词：颜色 视锥响应三刺激值LMS空间 相关色温 色度坐标空间 比例因子 牛顿法 

分 类 号：O436[机械工程—光学工程]