Watermark Detection Method with Highly Improved Ability of Resistance to Sensitivity Attack and The System

摘要

The invention provides a method for detecting a digital watermark,; To the random transformation for the insertion key is obtained from each other, obtain a correlation with the other and a plurality of detection comprising: providing a detection whenever any of the detection key is used for every signal input to the detector from the key, said supplied detected key with art input signal watermarking the presence of a step of determining. According to the above structure can serve as a very useful tool in not only the reliability of the watermark detection safety is a very high sensitivity for the attack on the protection of copyright of digital data.