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  2. RGBA color model - Wikipedia

    en.wikipedia.org/wiki/RGBA_color_model

    In computer graphics, pixels encoding the RGBA color space information must be stored in computer memory (or in files on disk). In most cases four equal-sized pieces of adjacent memory are used, one for each channel, and a 0 in a channel indicates black color or transparent alpha, while all-1 bits indicates white or fully opaque alpha.

  3. YCoCg - Wikipedia

    en.wikipedia.org/wiki/YCoCg

    The three values of the YCoCg color model are calculated as follows from the three color values of the RGB color model: [2] [] = [] [] The values of Y are in the range from 0 to 1, while Co and Cg are in the range of −0.5 to 0.5, as is typical with "YCC" color models such as YCbCr.

  4. Image color transfer - Wikipedia

    en.wikipedia.org/wiki/Image_color_transfer

    The image modification process is sometimes called color transfer or, when grayscale images are involved, brightness transfer function (BTF); it may also be called photometric camera calibration or radiometric camera calibration. The term image color transfer is a bit of a misnomer since most common algorithms transfer both color and shading ...

  5. Help : How to reduce colors for saving a JPEG as PNG

    en.wikipedia.org/wiki/Help:How_to_reduce_colors...

    Sometimes, you find a drawing or similar image useful for a Wikipedia article, that was saved as a JPEG but should have been saved as a PNG.JPEG is good for images where the color changes fluidly throughout the image, like in a photograph, whereas PNG files are good for images with relatively few colors, such as a drawing of a flag, a chart, or a map; note that sometimes SVG is better.

  6. Color space - Wikipedia

    en.wikipedia.org/wiki/Color_space

    Color space conversion is the translation of the representation of a color from one basis to another. This typically occurs in the context of converting an image that is represented in one color space to another color space, the goal being to make the translated image look as similar as possible to the original.

  7. LMS color space - Wikipedia

    en.wikipedia.org/wiki/LMS_color_space

    The Hunt and RLAB color appearance models use the Hunt–Pointer–Estevez transformation matrix (M HPE) for conversion from CIE XYZ to LMS. [4] [5] [6] This is the transformation matrix which was originally used in conjunction with the von Kries transform method, and is therefore also called von Kries transformation matrix (M vonKries).

  8. Wikipedia:How to read a color infobox - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:How_to_read_a...

    The infobox with the name {{Infobox color}} is a table found on Wikipedia articles setting out information about a named color – an example can be found on the right. The pieces of the infobox include: At the top of the infobox is the common name of the color. Below is an optional picture representing the color. For example, a collection of ...

  9. YPbPr - Wikipedia

    en.wikipedia.org/wiki/YPbPr

    YPbPr or ′ ′ ′, also written as YP B P R, is a color space used in video electronics, in particular in reference to component video cables. Like YC B C R , it is based on gamma corrected RGB primaries; the two are numerically equivalent but YP B P R is designed for use in analog systems while YC B C R is intended for digital video . [ 1 ]