Patent ID: 8731288

Claim:
An image processing method that generates, from an input image which is an image in an originating color space, an output image which is an image in a target color space, the image processing method comprising: performing, for each color represented by a color device value of the input image, difference calculation processing that calculates a first difference, the first difference being a difference between a feature amount representing lightness of white in the originating color space and a feature amount representing lightness of said each color; performing, for said each color, a first color conversion by means of colorimetric color reproduction to convert the color device value of said each color to a first color device value which is a color device value in the target color space; and performing an output image generation processing, for each said color, the output image generation processing comprising performing a second color conversion that calculates a second color device value and outputting the second color device value as a color device value of the output image, the second color device value being the color device value when the first difference is 0, and the second color device value being a sum of the color device value and a value which is obtained by multiplying a second difference which is a difference between the first color device value and the color device value by a coefficient which is larger than 0 and is equal to or smaller than 1 when the first difference is greater than 0.