| 引用本文: | 张雷洪,唐波,李碧程,汪祖辉,史英杰,翟孟狄,李孟涛,孙刘杰.基于DWT-SVD 的强鲁棒全息水印算法研究[J].包装工程,2013,34(21):105-109. |
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| 摘要: |
| 在理论分析全息水印和变换域水印的基础上,提出了基于DWT-SVD 的强鲁棒全息水印算法,通过MAT-LAB 仿真软件对该水印算法进行了仿真,验证了该水印算法的安全性、鲁棒性和不可见性。双随机相位调制加密全息技术对水印信息进行加密具有较高的安全性;在DWT 和SVD 变换域中嵌入水印能够保证水印的不可见性及鲁棒性;结合全息技术和DWT-SVD 的特性,克服了现有水印算法不抗旋转的缺点。该算法首先对水印信息进行加密,获取其奇异值;然后对载体RGB 图像的B 分量进行小波分解,获取其2 次小波分解后低频系数的奇异值;最后用加权的方法嵌入水印。水印嵌入与提取仿真实验结果为PSNR>20 dB,NC 值接近于1,说明该算法的可行性;鲁棒性仿真实验表明该算法能够抵抗任意旋转攻击及基本图像处理操作的攻击。 |
| 关键词: 全息 双随机调制 水印 变换域 |
| DOI： |
| 分类号:TS853+ . 6 |
| 基金项目:2012 年国家级“大学生创新创业训练计划冶项目;数字水印技术在出版物版权保护中的应用研究(121025226);上海理工大学博士启动费( 1D-11-309-001);新闻出版总署数字印刷工程研究中心数字传播重点实验室基金项目(10-00-309-000) |
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| Strong Robustness Holographic Watermarking Algorithm Based on DWTSVD |
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ZHANG Lei-hong, TANG Bo, LI Bi-cheng, WANG Zu-hui, SHI Ying-jie, ZHAI Meng-di, LI Meng-tao, SUN Liu-jie
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University of Shanghai for Science and Technology, Shanghai 200093, China
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| Abstract: |
| On the basis of theoretical analysis of holographic watermark and transform domain watermark, a strong robust holographic watermarking algorithm based on DWT-SVD was proposed. The security, robustness, and invisibility of the watermarking algorithm were verified through MATLAB simulation. Embedding watermark in the transform domain of DWT and SVD can ensure invisibility and robustness; the drawback of the existing watermarking algorithm, which is not resistant to rotation, can be overcome by combining with the characteristic of holographic technology and DWT-SVD. Firstly, the watermark was encrypted to get its singular value; singular value of the low frequency coefficient after the second wavelet decomposition was obtained through wavelet decomposition of the B component of RGB image; finally, watermark was embed using weighted method. Simulation result of embedding and extracting watermark is that PSNR>20 dB and NC value closing to 1, indicating that the method is feasible; robustness simulation results showed that the algorithm can resist arbitrary rotation attack and the basic image processing operations attacks. |
| Key words: holographic dual randomized modulation transform domain |
