Q. What is Dithering?
CMYK provides only 8 colours (C, M, Y K, Violet= C + M, Orange= M + Y, Green = C + Y, and colour of paper itself!). What about other colours? For these the scheme of Dithering is used. Dithering is a technique in that in place of being a single colour dot, it is a small matrix of a number of different colour dots. Such pixels are known as Super-pixels. The dots of a given colour in a Super-pixel decide the intensity of that colour. Problem with dithering is that it decreases the resolution of image because more dots are taken by a single pixel now.