Patent ID: 9380186
Filing Date: 2016-06-28
CPC Classification: G06K,G06T,H04N

Claim Text:
1. A method comprising: obtaining color data representing a spot color ink; accessing a table to obtain data representing a process color ink tint, the process color ink tint including at least a Cyan (C) component, a Magenta (M) component and a Yellow component (Y); simulating an overprinting of the process ink tint with the color data; decomposing the process ink tint into a maximum signal tweak and a minimum signal tweak, each of the maximum signal tweak and the minimum signal tweak having a Cyan (C) component, a Magenta (M) component and a Yellow component (Y); controlling one or more processors for minimizing a color error metric of the overprinting relative to the data representing the spot color ink, and optimizing the maximum signal tweak and the minimum signal tweak according to at least a spectral dependency; in which the optimizing includes determining color weights and a global signal strength, the color weights to be applied to the process color tint and the global signal strength for regulating a modulating process, wherein the modulating modulates the process color ink tint with the maximum signal tweak and the minimum signal tweak to represent an information signal; and outputting the modulated process color ink tint for overprinting with the color data.