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A contrast effect is the enhancement or diminishment, relative to normal, of perception, cognition or related performance as a result of successive (immediately previous) or simultaneous exposure to a stimulus of lesser or greater value in the same dimension. (Here, normal perception, cognition or performance is that which would be obtained in ...
The Chubb illusion is similar to another visual illusion, the contrast effect.The contrast effect is an illusion in which the perceived brightness or luminance of an identical central visual target form on a larger uniform background varies to the test subject depending on the ratio of the central form's luminance to that of its background. [4]
The maximum contrast of an image is termed the contrast ratio or dynamic range. In images where the contrast ratio approaches the maximum possible for the medium, there is a conservation of contrast. In such cases, increasing contrast in certain parts of the image will necessarily result in a decrease in contrast elsewhere.
The term is less frequently used of art after the late nineteenth century, although the Expressionist and other modern movements make great use of the effect. Especially since the strong twentieth-century rise in the reputation of Caravaggio, in non-specialist use the term is mainly used for strong chiaroscuro effects such as his, or Rembrandt's.
John the Baptist (John in the Wilderness), by Caravaggio, 1604, in the Nelson-Atkins Museum of Art, Kansas City. Tenebrism, from Italian tenebroso ('dark, gloomy, mysterious'), also occasionally called dramatic illumination, is a style of painting using especially pronounced chiaroscuro, where there are violent contrasts of light and dark, and where darkness becomes a dominating feature of the ...
The difference in values is often called contrast, and references the lightest (white) and darkest (black) tones of a work of art, with an infinite number of grey variants in between. [6] While it is most relative to the greyscale, though, it is also exemplified within colored images. [3]
Color theory, or more specifically traditional color theory, is the historical body of knowledge describing the behavior of colors, namely in color mixing, color contrast effects, color harmony, color schemes and color symbolism. [1]
Contrast (vision), the contradiction in form, colour and light between parts of an image; Contrast (statistics), a combination of averages whose coefficients add up to zero, or the difference between two means; Behavioral contrast, a phenomenon studied in psychology (behavior analysis)