Lattice point group generation method, lattice point group generation program, and lattice point group generation device

摘要

To provide a lattice point group generation method, a lattice point group generation program, and a lattice point group generation device, which can improve reproducibility of colors in an output image through a color conversion table.SOLUTION: A lattice point group generation method generates a group of lattice points before color conversion in a color conversion table that converts the colors of RGB into colors of CMYK, and includes: in each of six patterns in which three van der Corput sequences, which are a positive integer having a base of 2 or more and the same number of terms as that of the quotient n obtained by dividing, by 12, the number obtained by subtracting a specific number p from the maximum number Smax of lattice points that can be allocated for the color conversion table, are associated respectively with respective RGB, generating lattice points having terms of the same order of the three van der Corput sequences as the coordinates (S113); and generating lattice points that are present on the outermost shell in a RGB color space and is not any one of eight corners, by the number equal to or less than the total number of the number p and a remainder l obtained by dividing the number obtained by subtracting the number p from the maximum number Smax, by 12 (S116).SELECTED DRAWING: Figure 4