Patent ID: 7672014
Filing Date: 2010-03-02
Classification: H04N

Abstract:
1. An image processing apparatus comprising: a color conversion LUT selecting section selecting a fundamental color conversion LUT, as an optimum fundamental color conversion LUT, from among a set of fundamental color conversion LUTs, preliminarily prepared in compliance with different combinations of fundamental ink colors, based on color value information of ink colors actually used in a printing section of a multicolor-printing operation and color value information of fundamental ink colors defining each fundamental color conversion LUT; a color converting section converting multilevel pixel values, associated with a multicolor original image, in a display color space of the selected fundamental color conversion LUT into multilevel pixel values in an ink color space of the selected fundamental color conversion LUT; and a correction processing section correcting at least one set of multilevel pixel values of the converted multilevel pixel values in the ink color space of the selected fundamental color conversion LUT and multilevel pixel values in an ink color space, stored preliminarily in the selected fundamental color conversion LUT, based on a multilevel pixel value on a straight line connecting two points of a plurality of feature points of the ink colors actually used in the printing section of the multicolor-printing operation and a difference between a multilevel pixel value of the at least one set of multilevel pixel values and a multilevel pixel value on a straight line connecting two points of a plurality of feature points of fundamental ink colors defining the ink color space of the selected fundamental color conversion LUT.