contrast

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Related to contrasting: Contrasting colours

contrast

1. (in painting) the effect of the juxtaposition of different colours, tones, etc.
2. 
a. (of a photographic emulsion) the degree of density measured against exposure used
b. the extent to which adjacent areas of an optical image, esp on a television screen or in a photographic negative or print, differ in brightness
3. Psychol the phenomenon that when two different but related stimuli are presented close together in space and/or time they are perceived as being more different than they really are

Contrast

A juxtaposition of dissimilar elements to show the differences of form or color, or to set in opposition in order to emphasize the differences.

Contrast

 

in psychology, the subjective exaggeration of the differences between perceived objects or between certain sectors of the visual field during their spatial (simultaneous contrast) or temporal (successive contrast) contiguity. Thus, when the color black is placed next to white it seems even blacker. Contrast may also be manifested in color change. For example, a gray square on a red background seems greenish blue; on a blue background it looks orange. The sharpest contrast of two colors is expressed at the boundary of the two areas (boundary contrast). The phenomenon of assimilation is the opposite of contrast. Contrast is widely used in various forms of art and literature.

REFERENCES

Vudvorts, R. Eksperimental’naia psikhologiia. Moscow, 1950.
Teplov, B. M. “Vzaimodeistvie odnovremennykh svetovykh oschchushchenii.” In Zritel’nye oshchushcheniia i vospriiatiia. Moscow-Leningrad, 1935.

contrast

[′kän‚trast]
(communications)
The degree of difference in tone between the lightest and darkest areas in a television or facsimile picture.
(computer science)
In optical character recognition, the difference in color, reflectance, or shading between two areas of a surface, for example,a character and its background.

contrast

The white level of a display screen. The contrast adjusts how bright the white is. See brightness and contrast ratio.
References in classic literature ?
Even at that moment I could not help contrasting their state of mind with my own, which was far from comfortable, and breathing a sigh of envy and admiration.
I talked with a boy at Tuskegee who had made such a study as this, and I could not keep from contrasting his knowledge and enthusiasm with what I heard in a class room at a Negro university in one of the Southern cities, which is conducted on the idea that a college course will save the soul.
The prince walked in quickly and jauntily as was his wont, as if intentionally contrasting the briskness of his manners with the strict formality of his house.
she thought to herself, and could not help contrasting her with Cassandra, surrounded by innumerable silkworms in her bedroom.
Everything was as neat as wax, the green and white contrasting prettily together.
There were fifty sleek, black warriors, and in their midst, lithe and active as a young forest god, strode Tarzan of the Apes, his brown skin contrasting oddly with the ebony of his companions.