| 一种基于M序列扩频的小波域数字水印 |
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| 引用本文： | 权宁强,权义宁,王保保,张富斌.一种基于M序列扩频的小波域数字水印[J].计算机仿真,2004,21(8):152-155. |
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| 作者姓名： | 权宁强 权义宁 王保保 张富斌 |
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| 作者单位： | 西安电子科技大学网络与计算所,陕西,西安,710071 |
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| 摘 要： | 该文基于小波变换多分辨率的优良特性，结合M序列扩频技术的保密性强、抗干扰的特点，提出了一种盲数字水印方法。对原始图象先进行小波分解，然后用M序列扩频的方法把水印图象嵌入到变换后图象的第三层细节子图中，而后进行小波重构得到嵌入水印信息的图象。进行相关检测时不需要原始图像。实验证明该水印有很强的不可见性和鲁棒性。
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| 关 键 词： | 离散小波变换 序列 扩频 数字水印 |
| 文章编号： | 1006-9348(2004)08-0152-03 |
| 修稿时间： | 2003年8月14日 |
A Wavelet Domain Digital Watermark Based on M Sequence Spread Spectrum Technology |
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| QUAN Ning-qiang,QUAN Yi-ning,WANG Baobao,ZHANG Fu-bin.A Wavelet Domain Digital Watermark Based on M Sequence Spread Spectrum Technology[J].Computer Simulation,2004,21(8):152-155. |
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| Authors: | QUAN Ning-qiang QUAN Yi-ning WANG Baobao ZHANG Fu-bin |
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| Abstract: | In this paper, a new method of wavelet domain digital watermark is proposed. It is based on the excellent MRA (Multi-Resolution Analysis) property of discrete wavelet transform, combined with the strongly confidential and anti-jamming characteristics of M sequence spread spectrum technology. By decomposing an original image with DWT, then embedding a watermark into the 3rd layer of the transformed image via M sequence spread spectrum technology, the image with embedded watermark is obtained by wavelet reconstructing at last. The original image is not needed when detecting the watermark correlatively. Simulation shows that the watermark is strongly blind and fairly robust. |
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| Keywords: | Discrete wavelet transform Sequence Spread spectrum Digital watermark |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
