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A Wavelet-Based Video Watermarking Approach Robust to Re-encoding  

Yoo, Kil-Sang (중앙대학교 첨단영상대학원 영상공학과 영상콘텐츠보호 연구실)
Lee, Won-Hyung (중앙대학교 첨단영상대학원 영상공학과 영상콘텐츠보호 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.33, no.1C, 2008 , pp. 124-130 More about this Journal
Abstract
We present in this paper a method of digital watermarking for video data based on the discrete wavelet transform. In the proposed method, a watermark signal is inserted into the decompressed bitstream while detection is performed using the uncompressed video. This method allows detection if video has been manipulated or its format changed. We embed the watermark in the lowest frequency components of each frame in the un-coded video by using wavelet transform. The watermark can be extracted directly from the decoded video without access to the original video. Experimental results show that the proposed method gives the watermarked video of better quality and is robust against MPEG coding, down sampling and re-encoding to other type of video format such as MPEG4, H.264
Keywords
Wavelet; Watermarking; Encoding; Video; MPEG; DWT;
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