We present a low-cost, efficient, and industrially acceptable method to estimate the reflected and fluorescent spectral radiance factors of a fluorescent object based on spectrophotometric data without using a monochromator. With the measured spectral data, the coefficients of the truncated Fourier series used to approximate these two spectral radiance factors are estimated using a weighted least square algorithm. The weighting function is defined as the sum of the CIE 1931 standard x, y, and z color matching functions, so that the color difference is minimized from the viewpoint of human vision. Three fluorescent samples are used to verify our algorithm by predicting their color appearances under different sources.
Feng Chi Shen,
"Spectral estimation and color appearance prediction of fluorescent materials," Optical Engineering 40(10), (1 October 2001). https://doi.org/10.1117/1.1399283