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  2. Python Imaging Library - Wikipedia

    en.wikipedia.org/wiki/Python_Imaging_Library

    Python Imaging Library is a free and open-source additional library for the Python programming language that adds support for opening, manipulating, and saving many different image file formats. It is available for Windows, Mac OS X and Linux. The latest version of PIL is 1.1.7, was released in September 2009 and supports Python 1.5.2–2.7. [3]

  3. Indexed color - Wikipedia

    en.wikipedia.org/wiki/Indexed_color

    A 2-bit indexed color image. The color of each pixel is represented by a number; each number (the index) corresponds to a color in the color table (the palette).. In computing, indexed color is a technique to manage digital images' colors in a limited fashion, in order to save computer memory and file storage, while speeding up display refresh and file transfers.

  4. Grayscale - Wikipedia

    en.wikipedia.org/wiki/Grayscale

    Here is an example of color channel splitting of a full RGB color image. The column at left shows the isolated color channels in natural colors, while at right there are their grayscale equivalences: Composition of RGB from three grayscale images. The reverse is also possible: to build a full-color image from their separate grayscale channels.

  5. Gamma correction - Wikipedia

    en.wikipedia.org/wiki/Gamma_correction

    The camera encodes its rendered image into the JPEG file using one of the standard gamma values such as 2.2, for storage and transmission. The display computer may use a color management engine to convert to a different color space (such as older Macintosh's γ = 1.8 color space) before putting pixel values into its video memory. The monitor ...

  6. YCbCr - Wikipedia

    en.wikipedia.org/wiki/YCbCr

    I420 is a simpler design and is more commonly used. The entire image in Y is written out, followed by the image in U, then by the whole image in V. I420 layout; YV12 follows the same general design as I420, only the order between the U and V images is flipped. [18] NV12 is possibly the most commonly-used 8-bit 4:2:0 format.

  7. Color balance - Wikipedia

    en.wikipedia.org/wiki/Color_balance

    where , , and are the color-balanced LMS cone tristimulus values; ′, ′, and ′ are the tristimulus values of an object believed to be white in the un-color-balanced image, and ′, ′, and ′ are the tristimulus values of a pixel in the un-color-balanced image. Matrices to convert to LMS space were not specified by von Kries, but can be ...

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