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  2. 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.

  3. Palette (computing) - Wikipedia

    en.wikipedia.org/wiki/Palette_(computing)

    In computer graphics, a palette is the set of available colors from which an image can be made. In some systems, the palette is fixed by the hardware design, and in others it is dynamic, typically implemented via a color lookup table (CLUT), a correspondence table in which selected colors from a certain color space's color reproduction range are assigned an index, by which they can be referenced.

  4. Comparison of graphics file formats - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_graphics...

    Color depth. Indexed color Trans-parency. Meta-data. Inter-lacing. Multi-page Anima-tion Layers Color manage-ment Extend­- able HDR format CMYK; AI: Lossy and lossless Both 8 bpc Yes Yes Yes No Yes No Yes Yes — No AVIF: AV1 Lossy and lossless: Raster 12 bpc No Yes Yes No No Yes No Yes Yes Yes No BMP: None, RLE, JPEG, and PNG Raster 16 bpc ...

  5. GIMP - Wikipedia

    en.wikipedia.org/wiki/GIMP

    GIMP's native format XCF is designed to store all information GIMP can contain about an image; XCF is named after the eXperimental Computing Facility where GIMP was authored. Import and export capability can be extended to additional file formats by means of plug-ins. XCF file size is extended to more than 4 GB since 2.9.6 and new stable tree 2 ...

  6. QOI (image format) - Wikipedia

    en.wikipedia.org/wiki/QOI_(image_format)

    an index into the array of previously seen pixels (QOI_OP_INDEX) a difference compared to the previous pixel value in r,g,b (QOI_OP_DIFF or QOI_OP_LUMA) Full r,g,b or r,g,b,a values (QOI_OP_RGB or QOI_OP_RGBA) The color channels are assumed to not be premultiplied with the alpha channel (“un-premultiplied alpha”).

  7. Color picker - Wikipedia

    en.wikipedia.org/wiki/Color_picker

    A screenshot of the GTK+ 2 color picker. A screenshot of the Qt color picker. GIMP color picker.. A color picker (also color chooser or color tool) is a graphical user interface widget, usually found within graphics software or online, used to select colors and, in some cases, to create color schemes (the color picker might be more sophisticated than the palette included with the program).

  8. Wikipedia:Graphics tutorials - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Graphics_tutorials

    Various Wikipedians have put together graphics tutorials. Some of these are still works in progress. It is preferred to work with open formats (such as PNG or SVG) and free licenses (such as public domain or GFDL) when possible. There are many free software programs available for creating and editing images.

  9. Color moments - Wikipedia

    en.wikipedia.org/wiki/Color_moments

    Color moments are measures that characterise color distribution in an image in the same way that central moments uniquely describe a probability distribution. Color moments are mainly used for color indexing purposes as features in image retrieval applications in order to compare how similar two images are based on color.