Watermarking algorithm based on a human visual model
Signal Processing
General quality maintenance module for motion picture watermarking
IEEE Transactions on Consumer Electronics
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A method is described for verifying video content integrity by checking the continuity of timecodes embedded as digital watermarks. Conventional verification methods using digital signatures and fragile watermarking are unable to distinguish between attacks and regular modifications and thus are unable to protect against threats to content. The proposed verification method distinguishes attacks against video content from regular modifications by detecting timecodes embedded in consecutive frames of the content and then checking their continuity. A prototype implementation showed that the method is more effective than conventional ones and that it can be used by a variety of applications using video content.