Patent ID: 8243325
Filing Date: 2012-08-14
Classification: H04N

Abstract:
1. A method of matching color elements for objects within a print job for a document prior to printing, the method comprising executing the following acts with a microprocessor: for each page in the print job, identifying all objects and their associated object properties within the page, wherein the objects have different source color representations and/or different rendering intents; translating all identified objects' color to a common color space; for each object, identifying, according to predetermined object property criteria, if the object in the common color space is a candidate for a color matching task; for each of the identified candidate objects, filtering the candidate object properties using a predetermined visual relevance metric in the common color space, such that candidate objects having less than the predetermined visual relevance metric are removed from consideration, reducing the number of candidate objects to be color matched; translating the remaining candidate objects' color into a target color space of the printer; defining each candidate object satisfying the predetermined visual relevance metric as a color matching object with respect to at least a second color matching object thus defining a color matching object group; and for each such color matching object group, either alerting a user to a problem or automatically resolving the problem by assigning common rendering across the color matching object group if an object's color matches in the common color space but not in the target color space, wherein the objects' colors are transformed to each color space using a different mathematical transformation, and wherein the predetermined object property criteria comprises removing from consideration objects satisfying selected object properties of size and spatial proximity so as to reduce the number of candidate objects to be color matched.