- A series of shades ranging from pure white to pure black, used in displaying monochromatic images.
- An image displayed using such a series of shades.
(third-person singular simple present grayscales, present participle grayscaling, simple past and past participle grayscaled)
A scale of shades from black to white used in digital image technology, such as facsimile machines. Grayscale is a variation on the theme of black and white. Grayscale measures the intensity of the light reflected from an area (dot) of a plane surface and defines each pixel (picture element) as a byte, generally of eight bits, which yields 2 8 , or 256, shades of gray. Applications such as medical imaging require greater definition and, therefore, use 16-bit pixel descriptions, which yields 2 16 , or 65,536, shades of gray. See also facsimile and pixel.