DECISION ON OPTIMUM COLOR SPACE DIRECTION FOR SELECTING COLOR MODULATION

PROBLEM TO BE SOLVED: To decide an optimum color space direction in a multi-dimensional color space detached from an input color by obtaining an input color defined by the coordinates of the multi-dimensional color space and designating a target function balancing the measuring values of the perception reaction of men with respect to a color change and the reaction of a digital image selpplementary device. SOLUTION: A mathematical model for deciding the optimum direction of a vector Δw bar in a color space is realized with a series of designated restrictions as conditions. An input data structure which an operation 200 generally requires is illustrated. An input color 20 shown as a color c bar is a color of which the color space direction Δw bar is desired. A scanner reaction model 30 and men's perception model 40 supply a measuring mechanism for quantitatively measuring a difference between the color c and the color defined by the color space vector Δw bar detached from the color c bar. The difference of the colors is tested with respect to the restriction of the mathematical model. The technology generates a optimum color space direction Δw bar shown as a vector 60.