• An image type that uses black, white, and a ranges of shades of gray. The number of shades of gray depends on the number of bits per pixel. The larger the number of shades of gray, the better the image will look, and the larger the file will be.  1
  • The use of many shades of gray to represent an image. Continuous-tone images, such as black-and-white photographs, use an almost unlimited number of shades of gray. Conventional computer hardware and software, however, can only represent a limited number of shades of gray (typically 16 or 256). Gray-scaling is the process of converting a continuous-tone image to an image that a computer can manipulate. The binary range of a graphic representation between pure black and pure white. A scale of 256 shades of gray will be a better representation than 16 shades.  2


  1. RSI, Glossary.
  2. Formerly American Document Management, Glossary of Terms, now 5i Solutions Glossary.