一种基于音频小波变换的数字水印算法研究  

Research on a Digital Watermark Arithmetic Based on the Wavelet Transformation of Sound Frequency

作　　者：吕承民[1] 马宇峰[1] 孙俊[1] 宋峰[1] 蔺海峰[1] 

机构地区：[1]西安通信学院

出　　处：《石河子大学学报（自然科学版）》2008年第3期387-390,共4页Journal of Shihezi University(Natural Science)

摘　　要：提高语音通信的安全性和保护音频产品的知识产权已经成为人们关注的热点。本文介绍了信息隐藏的基本原理,重点分析了一种基于音频载体的图像数字水印算法,算法对音频载体首先进行小波变换并提取小波系数,然后将二值图像嵌入到低频系数中的较大值系列当中,接受时采用相反的方法对其进行处理并提取出原始水印图像,最后利用MATLAB软件对算法进行仿真实现。结果表明,该算法具有很强的安全性、不可察觉性,对噪声污染和MPEG压缩攻击具有良好的鲁棒性。People pay more and more attention to the raising of the safety in the audio communication and the protection of andio-product copyright. This article simply introduces the basic principle of the information hiding, and analyzes an image digital watermark arithmetic based on audio cartier especially. The arithmetic firstly carries on wavelet transformation to the audio-carrier and extract wavelet coefficient, then imbeds watermark picture to the great value series in the low frequency of wavelet coefficient. The receiver uses the contrary way to manage it and get the original watermarking image. Finally it uses the MATLAB software to emulate the arithmetic. The experimental results show that this algorithm possesses better secrecy and invisibility, and has good robustness to noise and MPEG compression attack.

关 键 词：数字水印 信息隐藏 小波变换 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]