摘要
为了提高水印信息的隐藏性和安全性,基于混沌序列的优良特性,本文提出了一种用于图像数字水印嵌入和检测的算法。由于混沌序列对初值具有敏感性,攻击者很难从一段有限长度的序列推断出整个混沌序列的初始条件,因此可保证水印信息的安全性。嵌入水印后的图像具有很好的不可见性,并且对常见的信号处理和噪声干扰具有较好的鲁棒性。
A wavelet watermarking algorithm based on the excellent property of chaotic sequence is proposed in this paper. Because the chaotic sequence is very sensitive to the initial value, the attackers cannot deduce the whole sequence from the finite sequence and the security of watermark information is ensured. At the same time, the proposed scheme has good robustness and imperceptibility to common information processing operations and noise attack.
出处
《科技广场》
2007年第5期132-134,共3页
Science Mosaic
关键词
数字水印
混沌特性
小波变换
Digital Watermarking
Chaotic Property
Wavelet Transform
