A Semi-fragile Watermarking Algorithm Based on Non-fixed Frequency Point in Discrete Fourier Transform

摘要：

Concerning the character that embedding watermarking information in fixed frequency point is vulnerable in commonly watermarking algorithm based on discrete Fourier transform, this paper chooses non-fixed frequency point by adopting composite discrete chaotic iteration system to embed watermarking information, which improves the security of watermarking information a lot. Meanwhile, in order to guarantee the robustness of the algorithm, a dual embedding strategy to embed watermarking information is proposed in this paper. In this way, it will detect the watermarking information from the other point when one point is under attack. Experimental results show that the security of this algorithm is high, and the robustness is better than single embedding strategy.

关键词： semi-fragile watermarking discrete fourier transform composite discrete chaotic iteration system

作者: HUANG Da CHE Shengbing HUANG Qiangbo

作者单位: College of Computer Science, Central South University of Forestry & Technology, 410004,Changsha, Hunan, China

会议类型: 国际会议

会议名称: 第二届国际计算机新科技与教育学术会议(Proceedings of the Second International Conference on Computer Science & Education ICCSE2007)

会议地点: 武汉

会议语种:英文

页码: 213-217

在线出版日期: 2007-07-25（万方平台首次上网日期，不代表论文的发表时间）