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  2. Ambiguous image - Wikipedia

    en.wikipedia.org/wiki/Ambiguous_image

    Rare example of an ambiguous image that can be interpreted in more than two ways: as the letters "KB", the mathematical inequality "1 < 13" or the letters "VD" with their mirror image. [7] When we see an image, the first thing we do is attempt to organize all the parts of the scene into different groups. [8]

  3. Contrast (vision) - Wikipedia

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

    Six renditions of a rocky shore photo with incremental contrast levels, clockwise from bottom left. 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]

  4. List of optical illusions - Wikipedia

    en.wikipedia.org/wiki/List_of_optical_illusions

    These are images that can form two separate pictures. For example, the image shown forms a rabbit and a duck. Ambigram: A calligraphic design that has multiple or symmetric interpretations. Ames room illusion An Ames room is a distorted room that is used to create a visual illusion. Ames trapezoid window illusion

  5. Aerial photographic and satellite image interpretation

    en.wikipedia.org/wiki/Aerial_photographic_and...

    Reaching the requirements of the two chosen, overlapping images is simple. The principal points (central point of the image in geometry) of the two photos must be in different locations on the terrain. [2] Another restriction is that the scale of the images must be the same. [2] The flying routes of the planes and the time of day are not ...

  6. Chromostereopsis - Wikipedia

    en.wikipedia.org/wiki/Chromostereopsis

    Blue–red contrast demonstrating depth perception effects 3 Layers of depths "Rivers, Valleys & Mountains". Chromostereopsis is a visual illusion whereby the impression of depth is conveyed in two-dimensional color images, usually of red–blue or red–green colors, but can also be perceived with red–grey or blue–grey images.

  7. Grayscale - Wikipedia

    en.wikipedia.org/wiki/Grayscale

    The contrast ranges from black at the weakest intensity to white at the strongest. [1] Grayscale images are distinct from one-bit bi-tonal black-and-white images, which, in the context of computer imaging, are images with only two colors: black and white (also called bilevel or binary images). Grayscale images have many shades of gray in between.

  8. False color - Wikipedia

    en.wikipedia.org/wiki/False_color

    A traditional false-color satellite image of Las Vegas. Grass-covered land (e.g. a golf course) appears in red. In contrast to a true-color image, a false-color image sacrifices natural color rendition in order to ease the detection of features that are not readily discernible otherwise – for example the use of near infrared for the detection of vegetation in satellite images. [1]

  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]