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Most H.264 watermarking schemes only embed the watermarks on I-frames, and are therefore extremely fragile under temporal attacks (e.g., frame dropping). To obtain the robustness under temporal attacks for H.264 watermarking systems, this paper presents a robust perceptual image hashing based temporal synchronization method. We extract robust geometric information from the 4times4 block mean map of...
In this article an extension of the watermarking scheme, based on key sequence, proposed by Lin et al. is presented. This new scheme is designed taking into account the temporal modifications of the MPEG-2, MPEG-4 part 2 and MPEG4 Part 10 compressions. Besides the redundancy control of Lin is modified and the characteristics extraction process is improved. In this way, a better performance, up to...
One of the challenges in blind watermark detection is synchronization. Synchronization is the process of identifying the coordinates of an embedded watermark and is crucial in successful watermark detection. If the detectorpsilas input is watermarked but synchronization fails, then the embedded watermark will not be detected. In this paper, novel video watermarking algorithm is proposed basing on...
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