| 一种基于遍历矩阵的小波域数字水印新算法 |
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| 引用本文： | 李志华,朱从旭,胡玉平.一种基于遍历矩阵的小波域数字水印新算法[J].计算机工程与应用,2007,43(16):37-40. |
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| 作者姓名： | 李志华 朱从旭 胡玉平 |
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| 作者单位： | 1.中南大学 信息科学与工程学院，长沙 410083 2.湖南人文科技学院 计算机系，湖南 娄底 417000 |
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| 基金项目： | 湖南省自然科学基金
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湖南省教育厅科研项目 |
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| 摘 要： | 提出了一种基于遍历矩阵和DWT的图像鲁棒水印新算法。利用指定密钥产生的遍历矩阵对水印图像置乱，再将置乱后水印图像嵌入到宿主图像的深层小波域低频子图，嵌入位置由遍历矩阵确定，嵌入规则基于改进的二值运算方法。水印的检测只需水印置乱密钥和水印嵌入位置密钥。大量仿真实验表明，算法在保持较好鲁棒性的同时，安全性也能有很好的保证。
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| 关 键 词： | 遍历矩阵 小波变换 图像置乱 二值运算 鲁棒性 |
| 文章编号： | 1002-8331（2007）16-0037-04 |
| 修稿时间： | 2006-12 |
Novel image watermarking algorithm base on ergodic matrix and DWT |
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| LI Zhi-hua,ZHU Cong-xu,HU Yu-ping.Novel image watermarking algorithm base on ergodic matrix and DWT[J].Computer Engineering and Applications,2007,43(16):37-40. |
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| Authors: | LI Zhi-hua ZHU Cong-xu HU Yu-ping |
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| Affiliation: | 1.School of Information Science & Engineering ，Central South University，Changsha 410083，China 2.Hunan Institute of the Humanities，Science and Technology，Loudi，Hunan 417000，China |
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| Abstract: | A novel robust image watermarking algorithm based on ergodic matrix and DWT is proposed. First,utilizing the ergodic matrix generated by specified keys,the bits of watermark are scrambled. Then the scrambled watermark image is embed into the deep wavelet domain of the host image,the embed positions are determined by the ergodic matrix,and the embed rule is determined via the improved binary operation. The original image is not required for detecting the watermarks. The experimental results demonstrate that the algorithm can ensure both robustness and safety of the watermark. |
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| Keywords: | ergodic matrix wavelet transform image scrambling binary operation robustness |
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