Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2010, Vol. 33 ›› Issue (3): 126-129.doi: 10.13190/jbupt.201003.126.036

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A Zero-Watermark Technology with Strong Robustness 

YE Tian-yu, MAO Zhao-feng, NIU Xin-xin, YANG Yi-xian   

  1. (1. State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China

    2. Key Laboratory of Network and Information Attack and Defence Technology, Ministry of Education, Beijing University of Posts and 

    Telecommunications, Beijing 100876, China; 3. National Engineering Laboratory for Disaster Backup and Recovery, Beijing University of 

    Posts and Telecommunications, Beijing 100876, China)

  • Received:2009-08-06 Revised:2009-09-08 Online:2010-06-28 Published:2010-05-14

Abstract:

In order to enhance the robustness of roust watermark technology, a zero-watermark technology is 

proposed based on discrete wavelet transformation (DWT) and singular value decompositionSVD. It conducts DWT with the original image, divides its low frequency band into blocks, and 

conducts SVD with every block. Zero-watermark is derived by judging the parity of the first digit of the 

biggest singular value in every block. Experiments show that it possesses strong robustness against 

various attacks.

Key words: discrete wavelet transformation, singular value decomposition, zero-watermark, robustness