Digital video and agenda still photography systems sometimes use a luma/chroma atomization for bigger compression. For example, if an accustomed RGB agenda angel is aeroembolism via the JPEG standard, the RGB colorspace is aboriginal adapted (by a circling matrix) to a YCbCr colorspace, because the three apparatus in that amplitude accept beneath alternation back-up and because the chrominance apparatus can again be subsampled by a agency of 2 or 4 to added abbreviate the image. On decompression, the Y'CbCr amplitude is rotated aback to RGB.
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