| 摘要 |
PROBLEM TO BE SOLVED: To perform color adjustment of a color image in high speed with a relatively simple configuration.SOLUTION: A signal conversion part of the image processing device converts a color image signal to a brightness signal and a color difference signal. A coefficient determination part determines a coordinate conversion coefficient according to a color difference signal of a target pixel of the color image. A coordinate transformation part transforms a color space coordinate of the color difference signal of the target pixel using the coordinate conversion coefficient. The coefficient determination part divides a color difference plane into at least three color areas by hue and maps different coordinate conversion coefficients to respective color areas. The coefficient determination part maps the color difference signal of the target pixel to the color difference plane and determines a coordinate conversion coefficient from a color area to which the color difference signal belongs. Each coordinate conversion coefficient is set at a border of color areas so that values of a color difference signals after conversion between coordinate conversion coefficients of adjacent color areas coincide. |
