| 数字水印中的正交小波基 |
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| 引用本文： | 刘九芬,黄达人,胡军全.数字水印中的正交小波基[J].电子与信息学报,2003,25(4):453-459. |
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| 作者姓名： | 刘九芬 黄达人 胡军全 |
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| 作者单位： | 1. 中山大学科学计算与计算机应用系,广州,510275;中国科学院自动化所,模式识别国家重点实验室,北京,100080
2. 中山大学计算机科学系,广州,510275 |
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| 基金项目： | 国家自然科学基金(60133020,60172067)，广东省自然科学基金(013164)，广州市重大科技攻关项目 |
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| 摘 要： | 该文主要研究了水印算法中小波基的选择和正交小波基的性质与水印稳健性的关系。研究结果表明:正交小波基的正则性、消失矩阶数、支撑长度以及小波图像能量在低频带的集中程度对水印稳健性的影响极小。同时也得到了一个有意义的结论:Haar小波比较适合应用于图像水印。该文还研究了在水印算法中,小波变换级数和嵌入公式的选取及其它一些问题。
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| 关 键 词： | 数字水印 正交小波基 小波变换 稳健性 |
| 收稿时间： | 2001-10-22 |
| 修稿时间： | 2001年10月22 |
The orthogonal wavelet bases for digital watermarking |
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| Liu Jiufen,Huang Daren,Hu Junquan.The orthogonal wavelet bases for digital watermarking[J].Journal of Electronics & Information Technology,2003,25(4):453-459. |
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| Authors: | Liu Jiufen Huang Daren Hu Junquan |
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| Affiliation: | Dept. of Sci. Computation and Comp. Appl Zhongshan Univ., Guangzhou 510275 China;NLPR Institute of Automation Chinese Academy of Sciences Beijing 100080; Dept. of Computer Science; Zhongshan University Guangzhou 510275 China |
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| Abstract: | In this paper, based on an embedding strategy for watermarking in DWT domain, the influence of characteristics of orthogonal wavelet for the robustness of watermarking and the selection of wavelet bases are mainly investigated. The results show the features like regularity, number of vanishing moments, filter length and the degree of energy collecting in the low frequency subband do not have any important impact on the robustness for watermarking. Meanwhile a significant conclusion that wavelet Haar is the most suitable for digital watermarking is got. Wavelet decomposed levels and watermarking embedding formula are also addressed. |
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| Keywords: | Digital watermarking Orthogonal wavelet bases Wavelet transform Robustness |
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