Digital Watermarking Algorithm Based on Hyperchaos and Fractional Fourier Transform

摘要：

　　In this paper,a novel digital image watermarking algorithm is proposed based on the hyperchaos system and fractional Fourier transform (FRFT) for copyright protection.The method making use of hyperchaotic key sequence to weak the correlation among the pixels of the watermark,in order to reinforce the security of the watermarking,and the watermark is also encrypted in the FRFT transform domain.Furthermore,this paper proposes an improved embedding scheme,in which the encrypted watermarking is embedded into the middle frequency of the original image with different strength.Simulations under several conditions are performed to verify the effectiveness of the proposed method,and the results show that the proposed algorithm is quite robust under either non-geometry or geometry attacks.

关键词： Hyperchaos fractional Fourier transform image watermarking

作者: Jun Lang Jin-ying Sun

作者单位: College of Information Science and Engineering Northeastern University Shenyang, China

会议类型: 国际会议

会议名称: 2012 IEEE 14th International Conference on Communication Technology(2012年第十四届通信技术国际会议(ICCT 2012))

会议地点: 成都

会议语种:英文

页码: 736-740

在线出版日期: 2012-11-09（万方平台首次上网日期，不代表论文的发表时间）