Patent ID: 7751618

Claim:
An image processing method comprising: using a processor to perform: a color data input step of inputting color chart data and illumination-unevenness correcting chart data respectively obtained by shooting a color chart and illumination-unevenness correcting chart under the same illumination; a target color data input step of inputting target color data corresponding to color patches included in the color chart; a first averaging step of averaging the color chart data in each of the color patches to calculate first color data; a second averaging step of averaging the illumination-unevenness correcting chart data in each of areas of the illumination-unevenness correcting chart to calculate second color data, the areas each corresponding to the respective color patches; a maximum value calculation step of calculating a maximum value of a plurality of the second color data corresponding to the areas; a correcting step of correcting the first color data, using the maximum value and the corresponding second color data; and a generating step of generating a color processing condition such that a difference between color data converted from the corrected first color data according to the color processing condition and the target color data is minimized.