Abstract

The effect of changed chromatic adaptation of the eye under source A (incandescent-lamp light), as compared with its adaptation under source C (average daylight) has been approximately explained by Helson, Judd, and Warren by means of a form of three-components theory. By this theory, each object-chromaticity point (x,y) for source A determines a corresponding object-chromaticity point (x′,y′) from which the predicted chromaticness (hue and saturation) of the color perception is read by interpolation in the Munsell renotation system. The present paper gives a geometrical interpretation of the theory directly in terms of the CIE chromaticity diagram, whereby without any computation it is possible to find the corresponding object-chromaticity point (x′,y′). The basic data for such an interpretation are given, not only for adaptation to source A, but also for adaptation to any source whatever.

© 1954 Optical Society of America

On Projective Transformations of the CIE-Chromaticity Diagram

Günter Wyszecki
J. Opt. Soc. Am. 46(11) 982-986 (1956)

Transformation of Chromaticity Diagrams

F. J. Bingley
J. Opt. Soc. Am. 44(2) 109-112 (1954)

Invariance of Insidedness in Projective Transformations of the Maxwell Triangle

G. Wyszecki
J. Opt. Soc. Am. 44(7) 524-529 (1954)

Automatic Photoelectric Colorimeter for Direct Reading of Munsell Coordinates

Gilbert L. Gibson and David A. Neubrech
J. Opt. Soc. Am. 44(9) 703-712 (1954)

A Regular Rhombohedral Lattice Sampling of Munsell Renotation Space

Günter Wyszecki
J. Opt. Soc. Am. 44(9) 725-734 (1954)