Glossary for Geospatial Science

color depth or pixel depth:� The number of data bits each pixel represents.� In 8-bit contexts, the pixel depth is 8, and each display pixel can be one of 256 possible colors or shades of gray.� With a 24-bit raster (or with three coregistered 8-bit rasters) the pixel depth is 24, and 16,777,216 colors are possible.