Patent ID: 8670155
Filing Date: 2014-03-11
Classification: H04N

Abstract:
1. A method for managing conversion of K-only data from a source CMYK color space to a destination CMYK color space, the method comprising: transforming the destination CMYK color space to a virtual RGB color space, wherein a neutral axis of the virtual RGB color space is set to be mapped to destination K-only output colors in a color separation table for mapping of source K-only grays to destination K-only grays; converting the source CMYK color space to a device independent color space, wherein the source CMYK color space includes source K-only grays; adjusting conversion of the source K-only grays such that the source K-only grays are forced to have the same chrominance as the neutral axis of the virtual RGB color space in the color separation table; and generating a look-up-table (LUT) to include a K-only mapping by combining the virtual RGB color space with the adjusted conversion of the source K-only grays.