Patent ID: 9710870
Date: 2017-07-18
CPC Classifications: G06K,G06T

Claim:
1. A method comprising: generating a watermark signal; using one or more programmed electronic processors, transforming color imagery by embedding a watermark signal in a first portion of the color imagery, the watermark signal being associated with a first embedding size at which alterations corresponding to the watermark signal are to be made, the first embedding size being associated with an n×m pixel area where n and m are both integers; adjusting the first embedding size associated with the watermark signal in a first manner to allow expanded detection of the watermark signal in the presence of first distortion, said adjusting yielding a second embedding size, the second embedding size being associated with an a×b pixel area, in which a and b are both integers and are both different from n and m; and using one or more programmed electronic processors, transforming the color imagery by embedding the watermark signal with the second embedding size as adjusted from the first embedding size in the first manner in a second portion of the color imagery.