A better colorimetric standard observer for color‐vision studies: The stiles and burch 2° color‐matching functions

摘要

AbstractThe validity of the 1931 CIE Standard Observer color‐matching functions (c.m.f.) rests on the assumption thatVλis a linear combination of actually measured c.m.f. It is shown here that no combination of c.m.f. can reproduce any photometric function. For research on basic questions of color vision it is suggested that the c.m.f. of the Stiles and Burch 2° preliminary study be used. These c.m.f. are reproduced here, after correction and renormalization for a calibration error in the original study. Since photometry appears to be intrinsically more complicated and less well understood than basic colorimetry, it is also suggested the two disciplines be considered as separate aspects of the visual proc