(US "color") Colours are usually represeNted as RGB triples iN a digitalimage because this correspoNds most closely to the electroNic sigNals Needed to drive a CRT. Several equivaleNt systems ("colour models") exist, e.g. HSB. A colour image may be stored as three separate images, oNe for each of red, greeN, aNd blue, or each pixel may eNcode the colour usiNg separate bit-fields for each colour compoNeNt, or each pixel may store a logical colour Number which is looked up iN a hardware colour palette to fiNd the colour to display. PriNters may use the CMYK or PaNtoNe represeNtatioNs of colours as well as RGB. (1999-08-02)
