This paper describes the optimization of the color matching functions (cmfs) of an individual observer based on metameric pairs using a variation method. This is a so much simplified method for estimating rough and ready cmfs of an individual observer in comparison with past experiments. Experiments have been performed using measured metamer spectral data.
Nobuhito Matsushiro, Noboru Ohta, Mark Q. Shaw, "Optimizing Color-Matching Functions for Individual Observers Using a Variation Method" in Proc. IS&T 8th Color and Imaging Conf., 2000, pp 155 - 160, https://doi.org/10.2352/CIC.2000.8.1.art00029