Patent ID: 8717379

Claim:
A color conversion table creating device for creating a color conversion table for converting first color data defined in an L*a*b* color space to second color data defined in an RGB color space, comprising: a processor configured to provide functional units including: a first data acquiring unit configured to acquire a plurality of sets of first data defined in the L*a*b* color space, the first data sets being determined by measuring test patches each corresponding to a set of second data defined in the RGB color space, the first data sets including a single set of black color data corresponding to data representing black at coordinate (0, 0, 0) in the RGB color space, each first data set of the first data sets having a measured lightness value; a reference value determining unit configured to determine, as a reference value, a measured lightness value of the single set of black color data; a lightness judging unit configured to judge, for each first data set of the first data sets, whether or not a measured lightness value of the subject first data set is smaller than the reference value; a third data determining unit configured to determine the subject first data set as a set of third data when the lightness judging unit judges that the measured lightness value of the subject first data set is smaller than the reference value; and a creating unit configured to create a color conversion table for converting the first color data defined in the L*a*b* color space to the second color data defined in the RGB color space based on the first data sets excluding the third data set.