Patent ID: 8934156
Filing Date: 2015-01-13
Classification: G06K,H04N

Abstract:
1. An image processing apparatus comprising: an image forming unit configured to output, on a predetermined medium, a chart including a plurality of gradation values for each of a plurality of color materials; a color measuring unit configured to measure the output chart; a creation unit configured to determine, for each gradation of each color, a target color based on the measurement result and create a gradation correction table of input gradation values and corresponding output gradation values, so as to obtain the target color for said each gradation of each color; and a processing unit configured to convert an input gradation value of image data into an output gradation value in the image forming unit with referring to the created gradation correction table; wherein, after creating the gradation correction table of input gradation values and corresponding output gradation values, the creation unit changes selected gradation values in the gradation correction table (i) to obtain a measured color value difference of neighboring gradations of the same color material that is included in a predefined tolerance range or (ii) to obtain an amount in change of a measured color value difference of the neighboring gradations that is included in a predefined tolerance range.