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  2. Face inversion effect - Wikipedia

    en.wikipedia.org/wiki/Face_inversion_effect

    The more familiar a particular type of face (e.g. human or dog) is, the more susceptible one is to the face inversion effect for that face. This applies to both humans and other species. For example, older chimpanzees familiar with human faces experienced the face inversion effect when viewing human faces, but the same result did not occur for ...

  3. Negative (photography) - Wikipedia

    en.wikipedia.org/wiki/Negative_(photography)

    A positive image is a normal image. A negative image is a total inversion, in which light areas appear dark and vice versa. A negative color image is additionally color-reversed, [6] with red areas appearing cyan, greens appearing magenta, and blues appearing yellow, and vice versa.

  4. Reverse-contrast typefaces - Wikipedia

    en.wikipedia.org/wiki/Reverse-contrast_typefaces

    Reverse-contrast "Italian" type in an 1828 specimen book by the George Bruce company of New York. [1] Shown below it is a "fat face" design, a type also popular in early 19th century printing. [2] [3] Both typefaces are very bold, but the fat face's thick lines are the verticals as normal and the Italian's are the horizontals. [a]

  5. Contrast (vision) - Wikipedia

    en.wikipedia.org/wiki/Contrast_(vision)

    Contrast is the difference in luminance or color that makes an object (or its representation in an image or display) visible against a background of different luminance or color. [1] The human visual system is more sensitive to contrast than to absolute luminance; thus, we can perceive the world similarly despite significant changes in ...

  6. Reversal film - Wikipedia

    en.wikipedia.org/wiki/Reversal_film

    In photography, reversal film or slide film is a type of photographic film that produces a positive image on a transparent base. [1] Instead of negatives and prints , reversal film is processed to produce transparencies or diapositives (abbreviated as "diafilm" or "dia" in some languages like German , Romanian or Hungarian ).

  7. Chiaroscuro - Wikipedia

    en.wikipedia.org/wiki/Chiaroscuro

    Chiaroscuro is used in cinematography for extreme low key and high-contrast lighting to create distinct areas of light and darkness in films, especially in black and white films. Classic examples are The Cabinet of Dr. Caligari (1920), Nosferatu (1922), Metropolis (1927) The Hunchback of Notre Dame (1939), The Devil and Daniel Webster (1941 ...

  8. Histogram equalization - Wikipedia

    en.wikipedia.org/wiki/Histogram_equalization

    This allows for areas of lower local contrast to gain a higher contrast. Histogram equalization accomplishes this by effectively spreading out the highly populated intensity values which are used to degrade image contrast. The method is useful in images with backgrounds and foregrounds that are both bright or both dark. In particular, the ...

  9. Chubb illusion - Wikipedia

    en.wikipedia.org/wiki/Chubb_illusion

    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]

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