Creating the illusion of new colors and shades by varying the pattern of
dots. Newspaper photographs, for example, are dithered. If you look closely, you can see that different shades of gray are produced by varying the patterns of black and white dots. There are no gray dots at all. The more dither patterns that a
device or
program supports, the more shades of gray it can represent. In printing, dithering is usually called
halftoning, and shades of gray are called
halftones. Note that dithering differs from gray scaling. In gray scaling, each individual dot can have a different shade of gray.
