Abstract

In general, when two or more stimuli are simultaneously presented to the eye, the phenomenon referred to as “contrast” results. This contrast will be produced by differences between the stimuli, in either luminance or chromaticity, or both.

Making use of the fact that veiling luminance, commonly called “glare,” destroys contrast, the authors propose the use of veiling luminance as a means for specifying the equivalence between chromaticity differences and luminance differences. The results of measurements on a large number of samples are presented, together with a practical application of the proposed method to the problem of determining how much chromaticity differences contribute to the judgment of graininess in photographic materials.

© 1958 Optical Society of America

Visual Sensitivities to Combined Chromaticity and Luminance Differences*

W. R. J. Brown and D. L. MacAdam
J. Opt. Soc. Am. 39(10) 808-834 (1949)

Dependence of Luminance Required for Constant Brightness upon Chromaticity and Chromatic Adaptation*

Edwin J. Breneman
J. Opt. Soc. Am. 48(4) 228-232 (1958)

Photoelectric Color Difference Meter*

Richard S. Hunter
J. Opt. Soc. Am. 48(12) 985-995 (1958)

Simultaneous masking interactions between chromatic and luminance gratings

Karen K. De Valois and Eugene Switkes
J. Opt. Soc. Am. 73(1) 11-18 (1983)

On the Electrical Response of the Human Eye to Red Stimuli of Different Time Distribution of Luminance*

Lucia Ronchi
J. Opt. Soc. Am. 48(7) 437-438 (1958)