| 一种基于离散小波变换的数字水印算法 |
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| 引用本文： | 刘金平,蒋加伏,唐贤瑛. 一种基于离散小波变换的数字水印算法[J]. 长沙理工大学学报(自然科学版), 2006, 3(1): 58-61 |
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| 作者姓名： | 刘金平 蒋加伏 唐贤瑛 |
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| 作者单位： | 长沙理工大学,计算机与通信工程学院,湖南,长沙,410076 |
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| 基金项目： | 浙江省湖州市自然科学基金 |
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| 摘 要： | 提出了一种基于离散小波变换的数字水印算法,水印采用有意义的二值图像.该算法是基于块的离散小波变换,即将原始图像和水印都分块后,再对各个块进行小波变换,利用混沌发生器将水印各块置乱后嵌入到图像的中频部分.试验结果表明,该算法具有较好的不可感知性和鲁棒性.
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| 关 键 词： | 离散小波变换 数字水印 图像 不可见性 |
| 文章编号： | 1672-9331（2006）01-0058-04 |
| 收稿时间： | 2005-06-16 |
| 修稿时间： | 2005-06-16 |
A digital watermarking algorithm based on wavelet transformation |
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| LIU Jin-ping,JIANG Jia-fu,TANG Xian-ying. A digital watermarking algorithm based on wavelet transformation[J]. Journal of Changsha University of Science and Technology(Natural Science), 2006, 3(1): 58-61 |
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| Authors: | LIU Jin-ping JIANG Jia-fu TANG Xian-ying |
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| Affiliation: | College of Computer Science and Communication Engineering, Changsha University of Science and Technology, Changsha 410076, China |
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| Abstract: | The digital watermarking technology is an important method for digital product right protection.A digital watermarking algorithm based on discrete wavelet transformation is proposed,and the watermarking is a significant 2-bit image.The algorithm is based on the DWT of block,i.e.,both the original image and the original watermarking can first be divided into blocks,then into the blocks using the DWT,the watermarking blocks can be permuted by the chaotic machine and the watermarking information can be embedded.Experiments results show that this algorithm leads to good invisibility and robustness. |
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| Keywords: | discrete wavelet transformation(DWT) digital watermarking image invisibility |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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