| 基于混沌映射和离散变换的盲水印算法 |
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| 引用本文： | 苏鹏.基于混沌映射和离散变换的盲水印算法[J].数字社区&智能家居,2011(5). |
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| 作者姓名： | 苏鹏 |
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| 作者单位： | 徐州建筑职业技术学院网络中心; |
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| 摘 要： | 盲水印由于在检验过程中不需要使用原始的水印图像,因此在具有较高的鲁棒性和不可见性的同时,增加了检验的方便性。该文提出了一种基于混沌映射和二维离散小波变换的盲水印的算法。该算法是首先将二值图像经过混沌映射处理,将置乱之后的二值图像作为水印图像,将作为载体的二维矢量图形,进行二维离散小波变换,之后将水印信息嵌入到待保护的图像中。由于将水印图像进行了混沌映射处理,故提高了抗裁剪和压缩攻击的能力;而对原始载体图像使用了二维离散小波变换,在没有密钥的情况下,是无法恢复原始水印图像的,故提高了水印信息的安全性。
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| 关 键 词： | DualTree复数小波变换 混沌映射 盲水印 |
The Blind-watermarking Algorithm Base on Discrete Wavelet Transform and Chaotic Modulation |
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| SU Peng.The Blind-watermarking Algorithm Base on Discrete Wavelet Transform and Chaotic Modulation[J].Digital Community & Smart Home,2011(5). |
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| Authors: | SU Peng |
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| Affiliation: | SU Peng(Xuzhou Institute of Architectural Technology Network Center,Xuzhou 221116,China) |
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| Abstract: | In this paper,a Blind-watermarking algorithm which is based on Dual Tree complex wavelet transform and chaotic mapping is proposed.We first make logistic modulation of the watermarking image,after then,we make complex wavelet transform the logic image and select low frequently wavelet coefficient of original image.Then we make the matrix gotten from above and the matrix from watermarking image to be a new matrix.To the new matrix we make Arnold transform and encrypt it.And we make the matrix to an array. Th... |
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| Keywords: | dual tree complex wavelet transform chaotic modulation blind-watermarking |
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