Exploiting self-similarities to defeat digital watermarking systems: a case study on still images
Proceedings of the 2004 workshop on Multimedia and security
Assessing motion-coherency in video watermarking
MM&Sec '06 Proceedings of the 8th workshop on Multimedia and security
Detection of motion-incoherent components in video streams
IEEE Transactions on Information Forensics and Security
A new inter-frame collusion attack and a countermeasure
IWDW'05 Proceedings of the 4th international conference on Digital Watermarking
Countermeasures for collusion attacks exploiting host signal redundancy
IWDW'05 Proceedings of the 4th international conference on Digital Watermarking
| Hi-index | 0.00 |
Recent efforts for watermarking digital video extend the results obtained for still image watermarking. As a result, most of the proposed algorithms rely on a frame-by-frame approach. Such an adaptation leads to unreliable algorithms in terms of security. The goal of this article is to stress the problem of collusion when digital watermarked data is distributed at large scale and especially intra-video collusion in the context of video. Three simple collusion attacks are described before being evaluated on two alternative video watermarking algorithms based on the spread spectrum technique. Finally, some experimental results are presented confirming the danger of intra-video collusion and some perspectives are discussed.