Psychophysical method of color reproduction

Adjusting components of the display system to reproduce colors observed in the original scene is difficult and expensive. We know that a color can be matched in hue (H), luminance (L), and saturation (S) by a mixture of three primary colors, red (R), green (G), and blue (B). The color senses to the mixture are various for different observations as the senses are psychophysical characters. In this paper we describe a psychophysical method of transforming the ideal primary colors X, Y, and Z making up the colors in the original scene into the colors R, G and B of the display system. The R, G, and B value corresponding to the X, Y, and Z values come from statistical data of standard observations. By means of a polynomial regression analysis, the transform relating the X, Y, and Z to the R, G, and B can be reached on those standard observations. Sufficient observation data and effective color samples are essential to find the psychophysical relation between the two sets of colors. Adaptation of a color lookup table to enhance the fidelity of color reproduction with the method is easier and more straightforward. This method can avoid the obstacles which occur in hardware methods of color reproduction.© (1992) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.