Image Quantization
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What it is
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mapping measured intensity or color values to a finite set of representable levels
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Formula
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bits can represent up to distinct codes
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Example
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an 8-bit grayscale channel commonly uses integer codes from 0 to 255
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Effect
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fewer levels can create visible banding and quantization error
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Distinguish from
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Image Sampling changes spatial sampling; quantization changes value precision
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Related