Patent ID: 7015929

Claim:
A color conversion method for performing color conversion on inputted color data to convert the inputted color data into color data having a color space different from that of the inputted color data, the method comprising: holding color space data in advance, the color space data being used for performing color conversion on color data having specific color space characteristics; comparing color space characteristics of the inputted color data with color space characteristics of the color space data that are held in advance; performing color conversion using gradation conversion data with respect to the inputted color data and color space data with respect to the inputted color data when a difference between the color space characteristics of the inputted color data and the color space characteristics of the color space data that are held in advance is a set threshold level or less; and performing color conversion using the gradation conversion data with respect to the inputted color data and the color space data that are held in advance when the difference between the color space characteristics of the inputted color data and the color space characteristics of the color space data that are held in advance is over the set threshold level.