| 基于小波系数树的扩频水印 |
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| 引用本文： | 胡玉平,宋乃平.基于小波系数树的扩频水印[J].计算机工程与应用,2003,39(15):53-55. |
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| 作者姓名： | 胡玉平 宋乃平 |
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| 作者单位： | 1. 娄底师专计算机系,湖南,娄底,417000;华中科技大学计算机学院,武汉,430074
2. 驻马店师范专科学校物理系,河南,驻马店,463000 |
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| 摘 要： | 文章在分析图像小波分解系数的树结构关系的基础上,提出了一种基于图像小波系数树的扩频盲水印,该方法将一位水印信息通过扩频嵌入到宿主图像的一棵小波树所有系数中,并结合人眼的视觉特性确定水印嵌入强度。提取水印时,用相关检测方法独立提取每一位水印信息。实验结果表明:该方法保证了水印的不可见性,对包括JPEG压缩、图像剪切、图像扭曲、旋转有较强的鲁棒性,是一种很有前途的水印技术。
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| 关 键 词： | 数字水印 小波变换 人眼视觉系统(HVS) 扩展谱技术 |
| 文章编号： | 1002-8331-(2003)15-0053-03 |
| 修稿时间： | 2003年1月1日 |
Spread-spectrum Watermarking Based on Tree of Wavelet Coefficients |
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| Hu Yuping , Song Naiping.Spread-spectrum Watermarking Based on Tree of Wavelet Coefficients[J].Computer Engineering and Applications,2003,39(15):53-55. |
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| Authors: | Hu Yuping Song Naiping |
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| Affiliation: | Hu Yuping 1,2 Song Naiping 31 |
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| Abstract: | The tree structure relation of wavelet coefficients is analysed at frist,then a method of spread-spectrum watermarking based on tree structure relation of wavelet coefficient is put forward.With this method,each watermark bit is embedded in all wavelet coefficients of one tree,and the watermark strength is determined by the characteristic of human visual system.While extracting,each watermark is extracted independtly using correlation detection.Experiment results show that the watermarking is invisible,and has good robustness to JPEG compression,cropping,twisting,totation etc.It's a perspective watermarking method. |
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| Keywords: | Digital watermarking Wavelet transform Human visual system(HVS) Spread spectrum technique |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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