| 一种基于DWT的非自适应数字水印算法及其MATLAB实现 |
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| 引用本文： | 黄福莹,李丽. 一种基于DWT的非自适应数字水印算法及其MATLAB实现[J]. 广西科学院学报, 2009, 25(4): 254-256 |
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| 作者姓名： | 黄福莹 李丽 |
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| 作者单位： | 广西大学计算机与电子信息学院,广西南宁,530004;广西大学计算机与电子信息学院,广西南宁,530004 |
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| 摘 要： | 介绍一种基于离散小波变换（DWT）的非自适应数字水印算法,并应用MATLAB数学软件实现算法,考察算法的有效性和抗攻击能力。该算法对原始图像进行3级小波变换,将水印信息嵌入到原始图像第3级小波变换的对角线系数分量,通过调整嵌入强度因子来获得满意的水印嵌入效果。该算法对JPEG压缩、椒盐噪声和剪切等攻击有很好的鲁棒性。
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| 关 键 词： | 数字水印 算法 图像 离散小波变换 MATLAB |
| 收稿时间： | 2009-10-10 |
An Unadaptive Digital Watermarking Algorithm Based on DWT and Its Realization on MATLAB |
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| HUANG Fu-ying and LI li. An Unadaptive Digital Watermarking Algorithm Based on DWT and Its Realization on MATLAB[J]. Journal of Guangxi Academy of Sciences, 2009, 25(4): 254-256 |
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| Authors: | HUANG Fu-ying and LI li |
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| Affiliation: | HUANG Fu-ying,LI li(School of Computer,Electronics and Information,Guangxi University,Nanning,Guangxi,530004,China) |
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| Abstract: | The paper introduces an unadaptive digital watermarking algorithm based on DWT(discrete wavelet transform) that is realized it on matlab.Both the validity and the attack resistance of the algorithm are tested in the paper.In the algorithm,the original image is divided by three-level wavelet transform and the information of watermarking is embedded into the diagonal coefficient of the third-level wavelet transform.The satisfactory result of the watermarking embedding is gained through adjusting a intensity c... |
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| Keywords: | MATLAB |
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