Patent ID: 8385635
Filing Date: 2013-02-26
Classification: H04N

Abstract:
1. An image processing apparatus comprising: a screen processing unit that performs, on a color component basis, screen processing for a color signal having basic color components and at least one spot color component, wherein the screen processing unit receives the color signal and attribute information indicating a color conversion method that was used when the color signal was generated, when the color signal includes at least one complementary-color pair of color components and the attribute information indicates that at least one of the color components of each of the at least one complementary-color pair is equal to or less than a predetermined value, the screen processing unit assigns different screen angles to the basic color components of the color signal, assigns a common screen angle to the color components of each of the at least one complementary-color pair, and performs AM screen processing for the respective color components of the color signal, and when the attribute information indicates that any one of the at least one spot color component of the color signal has a larger value than the predetermined value, the screen processing unit performs FM screen processing for one of the basic color components of the color signal, assigns a common screen angle to the at least one spot color component, assigns to the basic color components other than the one of the basic color components screen angles that are different from each other and different from the common screen angle, and performs AM screen processing for the at least one spot color component and the basic color components other than the one of the basic color components, wherein the screen processing unit performs the screen processing using a processor.