A video watermarking scheme based on the dual-tree complex wavelet transform

被引:56
作者
Coria, Lino E. [1 ]
Pickering, Mark R. [2 ]
Nasiopoulos, Panos [1 ]
Ward, Rabab Kreidieh [1 ]
机构
[1] Univ British Columbia, Vancouver, BC V6T 1Z4, Canada
[2] Univ New S Wales, Australian Def Force Acad, Univ Coll, Sch Informat Technol & Elect Engn, Canberra, ACT 2600, Australia
关键词
access control; complex wavelet transform (CWT); content dependent; geometric attacks; watermarking;
D O I
10.1109/TIFS.2008.927421
中图分类号
TP301 [理论、方法];
学科分类号
081202 ;
摘要
A watermarking scheme that discourages theater camcorder piracy through the enforcement of playback control is presented. In this method, the video is watermarked so that its display is not permitted if a compliant video player detects the watermark. A watermark that is robust to geometric distortions (rotation, scaling, cropping) and lossy compression is required in order to block access to media content that has been re-recorded with a camera inside a movie theater. We introduce a new video watermarking algorithm for playback control that takes advantage of the properties of the dual-tree complex wavelet transform. This transform offers the advantages of the regular and the complex wavelets (perfect reconstruction, shift invariance, and good directional selectivity). Our method relies on these characteristics to create a watermark that is robust to geometric distortions and lossy compression. The proposed scheme is simple to implement and outperforms comparable methods when tested against geometric distortions.
引用
收藏
页码:466 / 474
页数:9
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