Patent ID: 7474783

Claim:
A method for identifying one or more color calibration profiles for use with a scan of a printed image, comprising: scanning the printed image to generate scanned image data; performing the following steps using a computer: determining a spatial characteristic of the printed image from the scanned image data; comparing the spatial characteristic of the scanned printed image with spatial characteristics associated with color calibration profiles; and selecting one or more color calibration profiles based on the comparison of the spatial characteristics, wherein the selected one or more color calibration profiles alter a chrominance value, and the selecting comprises executing the following decision tree: first, distinguishing between a continuous marking process and a halftone marking process based on a degree of local variation; second, determining whether a halftone marking process is identified and, if a halftone marking process is identified, distinguishing between an ink-jet marking process and a xerographic or offset marking process based on a degree of periodicity, and if a halftone marking process is not identified, ending the executing of the decision tree; and third, determining if a xerographic or offset marking process is identified and, if a xerographic or an offset marking process is identified, distinguishing between a xerographic marking process and an offset marking process based on a degree of noise.