Abstract

Brightness-luminance discrepancy is the well known issue in color vision. To overcome this discrepancy, several models of brightness perception are proposed^1),2) based on color vision model. Common idea of these models is that the brightness-luminance discrepancy yield from contributions of red-green and yellow-blue color opponent channels to the brightness perception. Recently, however, Nakano, Ikeda and Kaiser (1988)³⁾ proposed another type of model. They explained the brightness perception using L-M and M-L type opponent mechanisms in stead of luminance and color opponent channels. They also showed that individual difference of brightness matching was explained by adjusting opponency of these two types of opponent mechanisms. In this paper, I modified their model so that it could explain individual data of spectral luminous efficiency function obtained by heterochromatic brightness matching. The data of twelve subjects were used in this analysis. The new model explains brightness matching data of composite lights as well as spectral data.

© 1992 Optical Society of America