Patent ID: 8681379

Claim:
An image processing apparatus comprising: a transformation unit configured to reproduce a color tone of a first output data of an original image data output from a first image output apparatus by using a second output data of the original image data output from a second image output apparatus; an estimating unit configured to estimate first and second geometric transformation parameters; an associating unit configured to generate first and second color component value association data; and a determining unit configured to generate a color tone transformation parameter based on a combination of pixel values in which a pixel value of the first image output data is substantially equivalent to a pixel value of the second image output data; wherein the transformation unit is configured to transform pixel values of the original image data with the color tone transformation parameter generated by the determining unit; wherein the associating unit is configured to detect at least a first pixel located in corresponding positions of the original image data and the first output data based on the first geometric transformation parameter and at least a second pixel located in corresponding positions of the original image data and the second output data based on the second geometric transformation parameter; wherein the associating unit is configured to generate the first and second color component value association data based on the detected first and the second pixels.