Grid point group generating method, lattice point group generating program and lattice point group generating device

摘要

PROBLEM TO BE SOLVED: To provide a lattice point group generation method capable of improving precision of quality of an output image via a color conversion table further than the prior arts, a lattice point group generation program and a lattice point group generation device.SOLUTION: The lattice point group generation method for generating a group of lattice points before color conversion in a color conversion table for converting colors in an RGB color space of three RGB channels into colors in a CMYK color space includes: generating (S113) three van der Corput columns for which the quotient obtained by dividing a number subtracting 8 from a maximum number of lattice points allocatable for color conversion table by 12 is the same number as a term number and a basis is a positive integer equal to or greater than 2; generating (S115) a lattice point having terms in the same order among the three van der Corput columns as coordinates in each of 6 patterns making each of the generated three van der Corput columns correspondent to each of three RGB channels; and then also generating (S116) a lattice point in a complementary color of this lattice point.SELECTED DRAWING: Figure 4