METHODS AND APPARATUS FOR AN OUTPUT LOOKUP TABLE DESIGN AND DATA ACCESS LAYER IN COLOR MANAGEMENT RESOURCE ENGINES

摘要

Methods and apparatus for saving and re-using lookup tables (LUTs) used in generating color data objects in a presentation/printing system. A data object is generated by a device or application having an associated input ICC profile and is transferred to a presentation device having one or more associated output ICC profiles. The data object is converted from its input color space to a color space of the presentation device based on calculated LUTs. Once calculated, the LUTs are saved in a memory of the presentation device to be re-used for processing of a subsequent data object. The saved LUTs are indexed using the object ID (OID) of the ICC output profile used to calculate the LUT. A subsequent data object may specify use of the same ICC output profile such that the previously calculated LUT may be retrieve and re-used to obviate the calculation burden to recalculate the LUT.