Glossary for Geospatial Science

RGB:� Red, Green, and Blue.� The red-green-blue color model uses position within a cube to describe colors.� The axes of the cube are the red, green, and blue values.� The shades of gray are found along the diagonal from the origin of the cube, where red, green, and blue values are zero and the apparent color is black, to the opposite corner, which appears white (red, green, and blue values are 100%).� RGB is generally used in reference to the separated spectral bands of an image so that the red, green, and blue bands taken together create a natural color image.� (See also: HBS, HIS.)