Patent ID: 9232113
Filing Date: 2016-01-05
CPC Classification: G06K,H04N

Claim Text:
1. An image forming apparatus, comprising: an interpolation reference data creating unit that, in a reference space where an RGB color space is divided into a plurality of hue planes, divides the hue planes with grid points, and creates interpolation reference data where triangles formed by the grid points for a linear interpolation are altered in areas where saturation of the hue plane is equal to or less than a predetermined threshold and where the saturation of the hue plane is higher than the predetermined threshold, the RGB color space therein being of color value data from interpolated point data registered in a color conversion table the interpolation reference data creating unit including a reference space coordinate calculating unit that refers to the interpolation reference data created by the interpolation reference data creating unit to calculate coordinates in the reference space of the color values in the RGB color space; an interpolation operation unit that performs the linear interpolation with the coordinates of the triangles formed by the grid points in the hue plane adjacent to the coordinates calculated by the reference space coordinate calculating unit so as to create the color conversion table, the color conversion table therein indicative of a correspondence relationship between the color values in the RGB color space and the color values in a CMYK color space; the interpolation operation unit including a color conversion unit that converts the color values in the RGB color space into the color values in the CMYK color space with the color conversion table.