Patent ID: 6262810
Filing Date: 2001-07-17
Classification: H04N

Abstract:
A print utility allowing an end user to adjust gamma correction curves, said utility comprising steps of:inputting a first set of color values representing a set of Cyan, Magenta and Yellow values corresponding to a desired output color;outputting an array of color output simulations using the first set of color values, the array consisting of a plurality of individual color samples having varying amounts of Cyan, Magenta and Yellow which differ by predetermined percentages, the output array including information identifying the varying amounts of Cyan, Magenta and Yellow of each individual color sample, said outputting step varying an optimum maximum density value of each of Cyan, Magenta and Yellow by a predetermined amount for each color sample;selecting the sample which corresponds most closely with the desired output color and determining from the identifying information optimum maximum density values for the Cyan, Magenta and Yellow values corresponding to the selected sample; andadjusting gamma correction curves which are used to adjust input color values by using the determined optimum maximum density values for the Cyan, Magenta and Yellow values corresponding to the selected sample to alter the optimum maximum density value for each input color value by a predetermined amount.