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Chroma subsampling

Practice of encoding images / From Wikipedia, the free encyclopedia

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Chroma subsampling is the practice of encoding images by implementing less resolution for chroma information than for luma information, taking advantage of the human visual system's lower acuity for color differences than for luminance.[1]

Widely used chroma subsampling formats

It is used in many video and still image encoding schemes ā€“ both analog and digital ā€“ including in JPEG encoding.

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