Compressed domain video watermarking in motion vector

Authors:
Hao-Xian Wang;Yue-Nan Li;Zhe-Ming Lu;Sheng-He Sun
Affiliations:
Department of Automatic Test and Control, Harbin Institute of Technology, Harbin, China;Department of Automatic Test and Control, Harbin Institute of Technology, Harbin, China;Department of Automatic Test and Control, Harbin Institute of Technology, Harbin, China;Department of Automatic Test and Control, Harbin Institute of Technology, Harbin, China
Venue:
KES'05 Proceedings of the 9th international conference on Knowledge-Based Intelligent Information and Engineering Systems - Volume Part II
Year:
2005

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Abstract

In this paper, a novel watermarking scheme in the compressed domain is proposed for video copyright protection. The robust watermark is embedded in motion vectors of the bitstream based on the relationships between one-pixel accuracy and half-pixel accuracy motion vectors at the encoder. Watermark can be blindly extracted by parsing the properties of motion vectors at the decoder. Simulation results show that the proposed algorithm can perform the real-time watermark embedding process without affecting visual quality of the video sequence and it is also standard-compliant. The proposed algorithm can be applied to any video compression standard with half-pixel accuracy motion vectors such as MPEG-2 and H.263.