Patent ID: 7206100

Claim:
An image processing method comprising: an input step of inputting colorimetric values of color patches output from an output device; a first generation step of generating, on the basis of the colorimetric values, a first conversion condition used to convert a signal on a first color space which depends on a target device into a signal on a second color space which is independent from a device; and a second generation step of generating, on the basis of the colorimetric values, a second conversion condition used to convert a signal on the second color space into a signal on a third color space which depends on the output device, said second generation step including generating the second conversion condition by: a first sub-step of converting a signal on the second color space into a signal on an RGB color space; a second sub-step of converting a signal on the RGB color space into a signal on the third color space; and a black amount adjustment sub-step of adjusting a black color value in the signal on the third color space.