Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2002, Vol. 25 ›› Issue (1): 17-21.

• Original articles • Previous Articles     Next Articles

Digital Watermark Sharing Based onChinese Remainder Theorem

LIU Jun1, LUO Shou-shan1, WU Qiu-xin2,#br# NIU Xin-xin2, YANG Yi-xian2   

  1. 1. School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China;
    2. Information Engineering School, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2001-04-19 Online:2002-01-10
  • Supported by:
     

Abstract: A digital watermark sharing algorithm based on Chinese remainder theorem is proposed. This algorithm is mainly used for the copyrightprotection for the static pictures. The idea of the secret sharing to the digital watermark is introduced, and the watermark recovering based on incomplete content is realized. The algorithm has some good properties. It has a good hiding effect. The difference between the original and the watermarked pictures can notbe perceived by eyes. The original picture is not needed in the recover process.The watermark can still be recovered even though the image was damaged. The algorithm has a good security. The recover process is protected by password. Anyonewho don't know the password can't recover the watermark.

Key words: information hiding , digital watermark , data sharing

CLC Number: