Patent ID: 8154558
Filing Date: 2012-04-10
Classification: G09G

Abstract:
1. A conversion table creating device for creating a color conversion table for converting a set of first color data defined in a first color space, that is a uniform color space, to a set of second color data defined in a second color space different from the first color space, the conversion table creating device comprising: a first reference point setting unit that sets a plurality of first reference points that are uniformly distributed in the first color space, each of the plurality of first reference points being defined by a set of third color data that is defined in the first color space; a second reference point setting unit that sets a plurality of second reference points that are uniformly distributed in the second color space, each of the plurality of second reference points being defined by a set of fourth color data that is defined in the second color space; a color data setting unit that sets a plurality of sets of fifth color data that are defined in the first color space in one to one correspondence with the plurality of fourth color data sets; an identifying unit that identifies some of the first reference points, that are in proximity to the fifth color data set for each of the second reference points; a calculation unit that calculates, for each of all the second reference points, color differences between the fifth color data set for the each second reference point and the some of the first reference points that are identified by the identifying unit for the each second reference point; a determining unit that determines, for each of the first reference points, a single fifth color data set that has the smallest color difference from the each of the first reference points among all the color differences that are calculated with respect to the each of the first reference points by the calculating unit; and a registering unit that registers, at each of the first reference points, the fourth color data set that is set in correspondence with the single fifth color data sets that is determined by the determining unit.