Patent ID: 7764832

Claim:
A method of processing image data using an image source computer via a look-up table, comprising: receiving a set of image data values in a first color space using the image source computer, wherein the first color space is device-dependent; generating entries for the look-up table using the image source computer, wherein the look-up table includes entries correlating the values in the first color space to integer values in a device-independent second color space, and wherein the generating includes comparing at least two sets of integer representations in the second color space to the values in the first color space by calculating two sets of test values in the first color space from the two sets of integer representations in the second color space and comparing the test values to the values in the first color space; comparing the values in the first color space to the look-up table using the image source computer; locating in the look-up table the values in the second color space corresponding to the values in the first color space using the image source computer; and converting the values in the first color space to the values in the second color space using the image source computer.