Abstract

This paper describes psychophysical matches and computer models of simple color and lightness displays. These noncomplex displays include simultaneous contrast, step gradient, and other targets. The study compares color sensations-—measured by visual matching, and spectral reflectances—measured radiometrically. In addition, different computational models of color sensation are tested for their ability to predict color matches for these targets. Unlike complex images in which color sensations are highly correlated with radiometric reflectances, noncomplex images exhibit local spatial interactions that generate sensations poorly correlated with radiometric reflectances.

© 1986 Optical Society of America