Patent ID: 7006691

Claim:
A profile correction apparatus comprising: a measured value obtaining section for obtaining measured values in which a predetermined physical amount involved in colors of color patches is measured, said color patches being outputted by an image output system in which first color image data represented with a first color space is converted into second color image data which is represented with a second color space in accordance with a color profile, and the color image is outputted in accordance with the second color image data, said color profile consisting of a plurality of pre-stage sections defining linear conversions of a plurality of coordinate components in the first color space, a middle stage section defining a coordinate conversion from the first color space to the second color space, and a plurality of post-stage sections defining linear conversions of a plurality of coordinate components in the second color space; and a correction section for correcting the post-stage sections to reduce a difference between the colors of the color patches outputted by said image output system and a predetermined target color in accordance with the measured values obtained in said measured value obtaining section.