Patent ID: 8947733
Filing Date: 2015-02-03
Classification: H04N

Abstract:
1. A color conversion apparatus for converting colors of a print that is produced using a plurality of color materials, comprising: a color signal input unit for inputting device color signals associated with respective amounts of the color materials; an image area extractor for extracting a first image area in which image granularity is more important and/or a second image area in which cost of used color materials is more important, from among an image area represented by the device color signals input by the color signal input unit; and an isochromatic converter for converting the device color signals representing the image area into new device color signals, so that the new device color signals will fall within an isochromatic range in a device-independent color space, wherein the isochromatic converter converts the device color signals such that a total amount of used color materials in the first image area extracted by the image area extractor is not reduced from a total amount before the device color signals are converted, and/or such that a total amount of the used color materials in the second image area extracted by the image area extractor is not increased from a total amount before the device color signals are converted.