COLOR CONVERSION TABLE CREATION DEVICE, IMAGE FORMING APPARATUS, COLOR CONVERSION TABLE CREATION METHOD, AND COLOR CONVERSION TABLE CREATION PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a color conversion table creation device that creates a color conversion table with high accuracy.SOLUTION: An image forming apparatus 1 is a color conversion table creation device that creates a color conversion table 230 showing the correspondence between a color value of a first color space and a color value of a second color space. An interpolation reference data creation unit 100 divides, in a reference space where the first color space is divided into a plurality of hue surfaces, the hue surfaces into lattice points, and creates interpolation reference data 200 in which the shape of a triangle composed of the lattice points for linear interpolation is changed with a part having the chroma of the hue surface equal to or lower than a predetermined threshold and a part having the chroma higher than the predetermined threshold. A reference space coordinate calculation unit 110 refers to the interpolation reference data 200 created by an interpolation reference space setting unit to calculate the coordinates of the color value of the first color space in the reference space. An interpolation calculation unit 120 performs linear interpolation with the coordinates of a triangle composed of lattice points in a hue surface adjacent to the coordinates calculated by the reference space coordinate calculation unit 110, to create the color conversion table 230.