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  2. Lea test - Wikipedia

    en.wikipedia.org/wiki/Lea_test

    It is especially vital to assess a child's contrast sensitivity at a young age in order to determine the distance and accuracy with the child can distinguish facial features. A very popular test designed specifically for this reason is the "Hiding Heidi Low Contrast Face Pictures" test (which the LEA Vision Test System produces a version of.)

  3. Contrast (vision) - Wikipedia

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

    Contrast sensitivity is typically expressed as the reciprocal of the threshold contrast for detection of a given pattern (i.e., 1 ÷ contrast threshold). [15] Using the results of a contrast sensitivity exam, a contrast sensitivity curve can be plotted, with spatial frequency on the horizontal, and contrast threshold on the vertical axis.

  4. Infant visual development - Wikipedia

    en.wikipedia.org/wiki/Infant_visual_development

    The major components of the visual system can be broken up into visual acuity, depth perception, color sensitivity, and light sensitivity. By providing a better understanding of the visual system, future medical treatments for infant and pediatric ophthalmology can be established. By additionally creating a timeline on visual perception ...

  5. Sensitometry - Wikipedia

    en.wikipedia.org/wiki/Sensitometry

    The telerecording film chain can be arranged to produce a direct negative-image film recording, a direct positive-image film recording, or a positive print can be made from the negative. In the first two cases we have the following four units in which local gamma or effective image contrast may be adjusted:

  6. 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]

  7. When to Use Salted vs. Unsalted Butter, According to Our ...

    www.aol.com/salted-vs-unsalted-butter-according...

    The straight facts about our favorite fat.

  8. Opponent process - Wikipedia

    en.wikipedia.org/wiki/Opponent_process

    Log-log plot of spatial contrast sensitivity functions for luminance and chromatic contrast [improve caption] The neurological conversion of color from LMS color space to the opponent process is believed to take place mostly in the lateral geniculate nucleus (LGN) of the thalamus, though it may also take place in the retina bipolar cells.

  9. Minimum resolvable contrast - Wikipedia

    en.wikipedia.org/wiki/Minimum_resolvable_contrast

    Minimum resolvable contrast (MRC) is a subjective measure of a visible spectrum sensor’s or camera's sensitivity and ability to resolve data.A snapshot image of a series of three bar targets of selected spatial frequencies and various contrast coatings captured by the unit under test (UUT) is used to determine the MRC of the UUT, i.e. the visible spectrum camera or sensor.