Though he did not use the term dither, the concept of dithering to reduce quantization patterns was first applied by Lawrence G. The term dither was published in books on analog computation and hydraulically controlled guns shortly after World War II. Dither is routinely used in processing of both digital audio and video data, and is often one of the last stages of mastering audio to a CD.Ī common use of dither is converting a grayscale image to black and white, such that the density of black dots in the new image approximates the average gray level in the original. Right image also 16 colors, but dithered to reduce banding effect.ĭither is an intentionally applied form of noise used to randomize quantization error, preventing large-scale patterns such as color banding in images. For other uses, see Dither (disambiguation).
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