An improved digital watermarking algorithm dedicated to electronic seal

Authors:
Zeng Fanfeng;Chen Haoming
Affiliations:
DEP. Computer Science and Technology, North China University of Technology, Beijing, China;DEP. Computer Science and Technology, North China University of Technology, Beijing, China
Venue:
IITA'09 Proceedings of the 3rd international conference on Intelligent information technology application
Year:
2009

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Abstract

In view of the characteristics of the electronic seal and the special security requirement, we improved watermarking algorithms based on the discrete cosine transform, which can fight back a variety of attacks. The improved algorithm was used in effectiveness and integrity of electronic seal. Finally, the algorithm analysis was tested in a variety of common attacks. The results showed that the extracted watermark information can keep a higher accuracy rate.