US Patent 7522307 Color image processor

The present invention relates to a method and an apparatus having, a first color conversion unit which executes first color conversion with respect to an image, a first image output unit which reproduces/outputs the image based on an output of the first color conversion unit, a second color conversion unit which executes second color conversion with respect to the same image, and a color conversion output synthesis unit which synthesizes a third color conversion output using outputs of the first and second color conversion units, wherein the apparatus selects one of outputs of the first color conversion unit and the color conversion output synthesis unit to thereby restore the color of the original image before the compression from the compressed image.