Patent ID: 7605945
Filing Date: 2009-10-20
Classification: H04N

Abstract:
1. A color reproduction definition creating method that creates a color reproduction definition representing a correspondence between a device value and an output color of a hypothetical virtual device outputting an image on a medium with a color material of each color according to the device value of each of a plurality of colors, the method comprising: a selection step of selecting candidates of color materials in a plurality of colors to be used on the virtual device from real color materials; a gray balance adjustment step of associating a color material amount of each color with a maximum value of the device value of each color when the virtual device outputs a predetermined black color by using the color materials in the plurality of colors selected in the selection step; a device value association step of associating each color material amount with each device value so that a relation between brightness and the device value becomes a linear relation when the virtual device outputs achromatic colors of different brightness; and an evaluation step of evaluating broadness of a color range reproducible by the virtual device by an inclusion rate of a plurality of standard colors, and having the steps started all over again from the selection step according to an evaluation result, wherein evaluating includes: