Characteristics of Chromatic-Adaptation Effect Estimated by Use of Object Colors

By using object colors, several studies have been made to predict chromatic-adaptation effects for various white light sources. Predictions by these studies are summarized in terms of grid of corresponding colors under illuminant A. The grids derived by use of object colors are compared with the grids by pseudo-surface colors as reference to another grid of chromaticity coordinates of Munsell samples with respect to illuminant A. It is confirmed that the variation of grids by object colors is smaller than that by pseudo-surface colors and that former grids predict stronger tendency toward color constancy than the latter ones.