Patent ID: 8922580
Filing Date: 2014-12-30
Classification: G09G,H04N

Abstract:
1. A method to modify a color lookup table, comprising: receiving a first image file having a first image defined in a first image color space, a first color lookup table (CLUT) indexed in the first image color space, and a second CLUT indexed in a device independent colorimetric space, the second CLUT having second CLUT nodes, device independent colorimetric color coordinates, and output-device color coordinates in an output-device color space for an output imaging device at the second CLUT nodes; generating and retaining in a first memory device tracer pixels from the second CLUT wherein each tracer pixel includes color coordinates of a corresponding unique node in the first CLUT; inserting the tracer pixels into the first image to form a combined image in a combined image file; tracking and retaining in the first memory device spatial locations of the tracer pixels in the combined image; making color adjustments to the combined image using image editing computer readable instructions to generate an adjusted combined image having adjusted tracer pixels including adjusted color coordinates in an adjusted combined image file; extracting the adjusted tracer pixels from the retained spatial locations in the adjusted combined image; and converting the second CLUT to a third CLUT having a size N wherein: