Abstract

Arend and Reeves [ J. Opt. Soc. Am. A 3, 1743 ( 1986)] described measurements of color constancy in computer simulations of arrays of colored papers of equal Munsell value under 4000-, 6500-, and 10,000-K daylight illuminants. We report an extension of those experiments to chromatic arrays spanning a wide range of Munsell values. The computer-simulated scene included a standard array of Munsell papers under 6500-K illumination and a test array, an identical array of the same papers under 4000 or 10,000 K. Observers adjusted a patch in the test array in order to match the corresponding patch in the standard array by one of two criteria. They either matched hue and saturation or they made surface-color matches, in which the test patch was made to “look as if it were cut from the same piece of paper as the standard patch.” The test and the standard patches were surrounded by a single color (annulus display) or by many colors (Mondrian display). The data agreed with those of our previous equal-value experiment. The paper matches were often approximately color constant. The hue–saturation matches were in the correct direction for constancy but were always closer to. a chromaticity match (no constancy) than to the chromaticity required for hue–saturation constancy.

© 1991 Optical Society of America

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