| 基于小波包最优树的图像数字水印 |
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| 引用本文： | 臧萍,范延滨. 基于小波包最优树的图像数字水印[J]. 青岛大学学报(自然科学版), 2005, 18(4): 66-71 |
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| 作者姓名： | 臧萍 范延滨 |
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| 作者单位： | 青岛大学信息工程学院,山东,青岛,266071;青岛大学信息工程学院,山东,青岛,266071 |
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| 摘 要： | 本水印系统利用小波包在图像处理上的优势和适于图像加密的特点，采用”熵”最优树的标准来确定小波包最优基，结合人眼视觉特性和图像压缩特点，选择在图像受影响较小的中频子块范围嵌入水印，即达到了抗压缩的目的，提高了水印的安全性和稳健性，又使嵌入的水印在视觉上具有很好的隐蔽性能。
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| 关 键 词： | 小波包变换 熵优化法 最优树 |
| 文章编号： | 1006-1037（2005）04-0066-06 |
| 收稿时间： | 2005-08-30 |
| 修稿时间： | 2005-08-30 |
Best Tree of Wavelet Packet Based Image Watermarking |
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| ZANG Ping,FAN Yan-bin. Best Tree of Wavelet Packet Based Image Watermarking[J]. Journal of Qingdao University(Natural Science Edition), 2005, 18(4): 66-71 |
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| Authors: | ZANG Ping FAN Yan-bin |
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| Affiliation: | College of Information Engineering, Qingdao University,Qingdao 266071,China |
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| Abstract: | This system uses wavelet packet transform(WPT) which is propitious to image processing and encryption to implement digital watermarking.The entropy-based algorithm is adopted to find the best basis.Human Visual System(HVS) and image compression property are utilized here.The median frequency range of the transformation is selected for embedding the watermarks.Results of experiments have showed that watermarks embedded using this system can have better robustness.Moreover,its imperceptibility is perfect. |
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| Keywords: | wavelet packet transform entropy-based algorithm the best tree |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
