Color conversion method, color conversion system, color conversion program product, printing control method, printing control system, printing control program product, and color conversion table

摘要

The relationship of correspondence between first color image data and second color image data is established for each of lattice points in a predetermined color space. A characteristic color contained in the first color image data is identified based on a predetermined criterion. The positions of lattice points falling within the domain in the color space expressing the identified characteristic color are shifted so as to narrow the spacing between adjoining ones of the lattice points. The relationship of correspondence is established for each of the shifted lattice points. A point of coordinates represented by the first color image data is allocated to any of lattice points surrounding the point of coordinates according to a predetermined rule. Improvement in granularity of dots and reductions in the number of calculations and an amount of data are accomplished.