Patent ID: 7095872

Claim:
A method, comprising: creating a database comprising a first plurality of productions; receiving a first plurality of scores associated with a quality of the first plurality of productions from a plurality of human subjects; providing information associated with the first plurality of productions and the first plurality of scores to an intelligent system, wherein the intelligent system comprises an intelligent system selected from the group consisting of a neural network, a rough set-based technique, an expert system, and a fuzzy model; training the intelligent system to generate a second plurality of scores associated with a quality of the first plurality of productions, wherein the second plurality of scores is substantially the same as the first plurality of scores; providing information associated with a second plurality of productions to the intelligent system; receiving a third plurality of scores associated with the quality of the second plurality of productions from the intelligent system; and optimizing by the intelligent system a strength of an imperceptible watermark using the third plurality of scores, wherein an optimized strength comprises a maximum strength of the watermark in which the watermark remains imperceptible.