Patent ID: 6791712
Filing Date: 2004-09-14
Classification: H04N

Abstract:
A method of converting a first colour value as determined by first colour co-ordinates in a colour space defined by colour parameters the first colour co-ordinates being situated outside a boundary of a predetermined colour range situated in the colour space, to a second colour value determined by second colour co-ordinates in the colour space, the second colour co-ordinates being situated on the boundary of the colour range, the method comprising:determining, in accordance with a selection rule, a part of the boundary situated in the colour space closest to the first colour co-ordinates; extending, in accordance with the selection rule, the closest part of the boundary by a part of the boundary situated in the colour space further away from the first colour co-ordinates, in dependence on the distance of the first colour co-ordinates from the boundary; and establishing the second colour co-ordinates on the basis of the extended part of the boundary.