Patent ID: 9117161
Filing Date: 2015-08-25
Classification: G06K,H04N

Abstract:
1. A profile creation method for creating a color conversion profile for an image forming apparatus which forms an image by selectively performing, on an input color value with total use amount of color material exceeding a set amount, a process for reducing the total use amount, by interpolating lattice points in a look-up table indicating correspondence between an input color value input to the image forming apparatus and an output color value in a device-independent color space indicating an output color to be output from the image forming apparatus corresponding to the input color value, the profile creation method comprising the steps of: (a) determining whether or not a point of an input color value with the total use amount of color material being equal to the set amount exists between two adjacent lattice points in the look-up table; and (b) when it is determined in the step (a) that the point of the input color value corresponding to the set amount exists between the two lattice points, calculating an output color value for an interpolation point set between the two lattice points, by a predetermined polynomial interpolation method for performing interpolation calculation by using, in addition to output color values of the two lattice points, an output color value of a lattice point other than the two lattice points.