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A Digital Watermarking Technique for MPEG Image/Video Compression  

Yoo Byoung-Seok (광운대학교 전자재료공학과 Digital Design & Test Lab.)
Choi Hyun-Jun (광운대학교 전자재료공학과 Digital Design & Test Lab.)
Seo Young-Ho (유한대학 전자정보과)
Kim Dong-Wook (광운대학교 전자재료공학과 Digital Design & Test Lab.)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.5C, 2005 , pp. 406-414 More about this Journal
Abstract
The necessity for a technique to protect intellectual property of a digital content has been increasing, especially for the image/video contents which are the most favorite because of their high information-intensive property. According to this demand, this paper proposed a digital watermarking algorithm, which is recognized as the most promising technique. This algorithm targets MPEG compression system and the watermarking process is to be performed during the compression process. It inserts watermark only in Y components of I-frames. Experimental results showed that the proposed method satisfied both imperceptibility and robustness against various attacks. The PSNR difference between the compressed images(the average compression ratio was about 27:1 with Y:Cb:Cr=4:2:0 color format for TM5-based compression) with and without watermarking was only 1.8dB ($4.2\%$). In each case that the resulting image after an attack was reusable the normalized correlation between the extracted watermark and the original one was above 0.8.
Keywords
Digital watermarking; MPEG system; JND; Pixel correlation; Real-time process;
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