Dither is an intentionally applied form of noise used to randomize quantization error, preventing large-scale patterns such as color banding in images.
Dither is an intentionally applied form of noise used to randomize quantization error, preventing large-scale patterns such as color banding in images. Dither is routinely used in processing of both digital audio and digital video data, and is often one of the last analog stages of audio production to compact disc.
A typical use of dither is: given an image in grey-scale, convert it to black and white, such that the density of black dots in the new image approximates the average level of grey in the original image.
Dithering is also used in image processing, typically consisting of alternating pixel colours to create the illusion of a new colour.
