Patent ID: 9092719
Filing Date: 2015-07-28
Classification: G03G,G06K,H04N

Abstract:
1. A color image processing apparatus comprising: an image forming unit configured to form a color image using recording materials of a plurality of colors; an image processing unit configured to implement a plurality of image processing methods that achieve a plurality of types of pseudo-halftone representations; a color measurement unit configured to perform color measurement of the color image formed by the image forming unit; a single-color calibration unit configured to execute single-color calibration by causing the color measurement unit to perform color measurement of a pattern image including single-color patch images formed using single-color recording materials by the image forming unit and then acquiring, based on a result of the color measurement by the color measurement unit, a correction value to be used to bring a reproduction characteristic of a single-color image formed by the image forming unit close to a target value; and a multi-color calibration unit configured to execute multi-color calibration by causing the color measurement unit to perform color measurement of a pattern image including multi-color patch images formed using multiple color recording materials by the image forming unit and then acquiring, based on a result of the color measurement by the color measurement unit, a correction value to be used to bring a reproduction characteristic of a multi-color image formed by the image forming unit close to a target value, wherein, in a case where the multi-color calibration unit executes the multi-color calibration after the single-color calibration unit executes the single-color calibration, a smaller number of types of image processing methods are used to form the pattern image including the multi-color patch images in the multi-color calibration than a number of types of image processing methods used to form the pattern image including the single-color patch images in the single-color calibration.