Acta Optica Sinica, Volume. 42, Issue 2, 0233001(2022)
Calculation of Light Source Corrected Color Temperature Based on Cone Fundamental Space
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 uc-vc 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 uF-vF space derived from the tristimulus value space XFYFZF 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.
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Xiaowen Dong, Yang Xu, Cheng Gao, Changjun Li. Calculation of Light Source Corrected Color Temperature Based on Cone Fundamental Space[J]. Acta Optica Sinica, 2022, 42(2): 0233001
Category: Vision, Color, and Visual Optics
Received: Jun. 23, 2021
Accepted: Aug. 9, 2021
Published Online: Dec. 29, 2021
The Author Email: Xu Yang (xuyang_1981@aliyun.com)