Patent ID: 7265870

Claim:
Method for separating a color, defined as a set of color values in a color space into colorant values (C 1 , C 2 , . . . , CN), for N colorants in colorant space comprising the steps of: converting said set of color values in a color correction step into a set of values defining said color in a trajectory space; defining in said trajectory space at least two trajectories comprising trajectory points (px), each said trajectory point (px) having: a set of values in trajectory space and corresponding colorant values (C 1 x , C 2 x , . . . CN x ) for said N colorants in colorant space for said set of values of said trajectory point, determining for said color said colorant values (C 1 , C 2 , . . . CN) for said N colorants using an interpolation technique based upon: said set of values in trajectory space for said color, said set of values in trajectory space and their corresponding colorant values (C 1 x , C 2 x , . . . CN x ) for said N colorants ot at least two trajectory points (px).