COLOUR IMAGE CODING ON MUNSELL SPECIFICATION SYSTEM.

The Munsell HVC Colour Coordinate is one of the best colour coordinates in representing colour and perceptually uniform space. A new predictive coding, combined with the Munsell colour coordinate and a new division rule of colour space, decreases the quantizing error and slope overload error in colour image coding. Satisfactory picture quality is obtained by the coding of entropy: 3. 5 (bits/pixel). Because three colour parameters H, V and C are psychometrically independent of one another, colour information can very effectively be encoded, such that information loss at the contour of the picture is small. Thus the coordinates H, V and C are superior to coordinates Y, I and Q in the coding of colour images.