| 基于重要小波树的图像水印技术 |
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| 引用本文： | 李段,王成儒.基于重要小波树的图像水印技术[J].计算机工程与设计,2006,27(1):124-125. |
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| 作者姓名： | 李段 王成儒 |
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| 作者单位： | 燕山大学,信息科学与工程学院,河北,秦皇岛,066004 |
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| 摘 要： | 为了实现数字图像的版权保护，给出一种基于重要小波树的图像水印算法，利用小波零树思想，在小渡变换后的图像中构造重要系数树；水印信号是代表用户版权的二值图像，每位信号采用不同的混沌序列调制后，嵌入到一棵重要小渡树中；水印的提取不需要原始图像。实验结果表明，算法不仅具有良好的不可见性，并且对常见的图像处理操作具有较好的鲁棒性。
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| 关 键 词： | 数字水印 版权保护 小波零树 扩频 混沌 |
| 文章编号： | 1000-7024（2006）01-0124-02 |
| 收稿时间： | 2004-12-15 |
| 修稿时间： | 2004-12-15 |
Image watermarking technique based on significant wavelet tree |
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| LI Duan,WANG Cheng-ru.Image watermarking technique based on significant wavelet tree[J].Computer Engineering and Design,2006,27(1):124-125. |
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| Authors: | LI Duan WANG Cheng-ru |
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| Affiliation: | College of Information Science and Engineering, Yanshan University, Qinhuangdao 066004, China |
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| Abstract: | An image watermarking algorithm based on significant wavelet tree was proposed.With the idea of wavelet zero-tree,significant wavelet trees were constructedfrom the wavelet transformed images.The binary watermarkimages with copyrightinformation was embedded into every significant wavelet tree with different chaotic sequences.The extraction of watermark didn't need the original carrier images.Experiments show that the watermarked image is invisible and robust to a lot of common image manipulations. |
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| Keywords: | digital waterrnarking copyright proteetion wavelet zero-tree spread spectrum chaotic |
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