Patent ID: 7602525
Filing Date: 2009-10-13
Classification: H04N

Abstract:
1. An image processing device comprising: a first color conversion unit that converts RGB image data to CMY image data; a color conversion table storing unit that stores at least a color conversion table produced by a color conversion table producing device; a second color converting unit that converts the CMY image data to CMYKcm data on the basis of the color conversion table, which is selected by a color conversion table selecting unit and which is read from the color conversion table storing unit; wherein said image processing device carries out image processing using said color conversion table produced by obtaining ink-quantity vectors I wherein said smoothing level evaluation function E includes an evaluation function Eit based on a twisted quantity of an ink-quantity vector before and after the conversion using the color conversion table, wherein the evaluation function Eit is represented as a mathematical expression (A-1-3), and wherein “t” is a suffix, which denotes a certain grid point p