摘要
提出一种用超混沌迭代产生的序列进行加密的双重零水印算法,用图像离散余弦变换和小波变换后的重要系数分别构造零水印,以提高水印算法的抗攻击能力,采用超混沌序列进行加密,以提高系统的安全性。实验结果表明,该算法提高了水印系统的综合性能,具有较好的不可见性、鲁棒性和安全性。
This paper presents a double zero-watermarking algorithm based on transform domain and byperchaotic iteration. It uses the important coefficients of Discrete Cosine Transform(DCT) domain and Discrete Wavelet Transform(DWT) domain to constructure zero watermarkings separately, uses a hyperchaofic sequence to encrypt, so that the robustness, invisibility and security are improved. Experimental results show that the algorithm improves the integrated performance of the watermarking system.
出处
《计算机工程》
CAS
CSCD
北大核心
2008年第17期158-161,共4页
Computer Engineering
关键词
超混沌迭代
双重零水印
不可见性
鲁棒性
安全性
hyperchaotic iteration
double zero-watermarking
invisibility
robustness
security.