| 基于小波变换的自同步音频水印算法 |
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| 引用本文： | 吴绍权,黄继武,黄达人.基于小波变换的自同步音频水印算法[J].计算机学报,2004,27(3):365-370. |
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| 作者姓名： | 吴绍权 黄继武 黄达人 |
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| 作者单位： | 中山大学信息科技学院,广州,510275 |
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| 基金项目： | 国家杰出青年基金 ( 6 0 32 5 2 0 8)，国家自然科学基金重点项目 ( 6 0 1 330 2 0 )，国家自然科学基金 ( 6 9975 0 1 1，6 0 1 72 0 6 7)，教育部跨世纪优秀人才基金，教育部博士点基金 ( 2 0 0 2 0 5 5 80 38)资助 |
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| 摘 要： | 该文提出了一种基于DWT的自同步音频水印算法．该算法具有如下特点：(1)在隐藏水印信息的同时，嵌入一个同步信号，使水印具有自同步能力；(2)同步信号与水印隐藏于DWT域低频子带，在改善同步信号鲁棒性的同时，利用DWT的时频局部特性，有效地提高在变换域内搜索同步信号的效率，较好地解决了同步信号鲁棒性与其搜索计算量之间的矛盾．实验表明，所提出的方法在抵抗各种通用的音频处理和攻击(如高斯噪声、MP3压缩、重采样、重量化、裁剪等)方面具有良好的性能．
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| 关 键 词： | 音频信号 音频处理 同步信号 鲁棒性 小波变换 自同步音频水印算法 |
DWT-Based Audio Watermarking with Self-Synchronization |
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| WU Shao,Quan,HUANG Ji,Wu,HUANG Da,Ren.DWT-Based Audio Watermarking with Self-Synchronization[J].Chinese Journal of Computers,2004,27(3):365-370. |
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| Authors: | WU Shao Quan HUANG Ji Wu HUANG Da Ren |
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| Abstract: | This paper presents a blind audio watermarking algorithm with self synchronization based on DWT (Discrete Wavelet Transform). The features of the proposed algorithm are as follows: (1) Synchronization code is embedded into audio with the watermark, and the watermark thus generated has the ability of self synchronization. (2) Synchronization code and watermark are embedded into the low frequency coefficients in DWT domain to achieve good robustness performance. By exploiting the time frequency localization of DWT to decrease the computation load for searching synchronization codes effectively, author resolve the conflict between robustness and computation complexity of synchronization code. Experimental results show the watermark is robust against common signal processing manipulations and attacks, such as Gaussian noise, resampling, requantization, cropping and MP3 compression. |
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| Keywords: | digital watermarking audio watermarking synchronization DWT cropping |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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