contrast

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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 periodicals archive ?
All in all, Lugea's volume is a thorough and interesting study which could be of interest to a wide readership, including people working on stylistics, discourse analysis, contrastive linguistics, cognitive linguistics or translation studies.
Figure 21 shows the turbulent viscosity ratio in external rear view mirror region for contrastive models.
Contrastive analysis of Urdu and English structures, and the participants' reasons were used to describe errors and to suggest reasons for errors.
On the counterfactual elaboration of the contrastive account, contrastive causal statements like (1) are true if and only if, had A* happened instead of A, B would not have happened (I will henceforth ignore effect-contrasts for simplicity).
It opens with the probing contrastive study, based on Tavecchio's (2010) corpus, presented in chapter 5 ("Thematic Parentheticals in Dutch and English") by Hannay and Gomez-Gonzalez, in which interesting differences concerning the frequency, grammatical realization, rhetorical effect and discourse functions of English and Dutch thematic parentheticals are put forward.
farm 'On the farm.' Fronting of a locative adjunct in a contrastive focus clause leads to similar marking by za.
Having made this distinction between contrastive and noncontrastive reasons, it is worth noting that, in one sense, it appears that all reasons are really contrastive reasons, at least with respect to the appropriately specified pair of alternatives.
Kaplan's (1966) early argument in contrastive rhetoric states that every culture develops its distinctive patterns of thinking and that these patterns considerably influence the organizational structure of writing.
Apparently, an agent is not morally responsible for what they have done if there is no contrastive explanation for their choice (43).
He stressed the necessity for conducting a contrastive analysis between the Iranian and other world revolutions.