A new calibration method has been developed to improve the accuracy of chromaticity coordinates obtained from a tristimulus colorimeter for color displays. Matrix methods such as the one recommended by ASTM are well known for this purpose, but they may fail to work as expected due to
experimental noise and errors. As these matrix methods are based on tristimulus values, the accuracy of the luminance measurement affects the accuracy of the corrected chromaticity. This new method utilizes
Yoshi Ohno, Jonathan E. Hardis, "Four-Color Matrix Method for Correction of Tristimulus Colorimeters" in Proc. IS&T 5th Color and Imaging Conf., 1997, pp 301 - 305, https://doi.org/10.2352/CIC.1997.5.1.art00059