Semi-Fragile Audio Watermarking Algorithm in DWT Domain  

作　　者：LEI Min YANG Yu LUO Shoushan NIU Xinxin 

机构地区：[1]Key Laboratory of Network and Information Attack ＆ Defence Technology of MOE, B eijing University of Posts and Telecommunications, Beijing, 100876, China [2]School of Software Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876, China

出　　处：《China Communications》2010年第4期71-75,共5页中国通信（英文版）

基　　金：We wish to thank the National Basic Research Program of China （973 Program） for Grant 2007CB311203, the National Natural Science Foundation of China for Grant 60821001, the Specialized Research Fund for the Doctoral Program of Higher Education for Grant 20070013007 under which the present work was possible.

摘　　要：A novel semi-fragile audio watermarking algorithm in DWT domain is proposed in this paper.This method transforms the original audio into 3-layer wavelet domain and divides approximation wavelet coefficients into many groups.Through computing mean quantization of per group,this algorithm embeds the watermark signal into the average value of the wavelet coefficients.Experimental results show that our semi-fragile audio watermarking algorithm is not only inaudible and robust against various common images processing,but also fragile to malicious modification.Especially,it can detect the tampered regions effectively.A novel semi-fragile audio watermarking algorithm in DWT domain is proposed in this paper. This method transforms the original audio into 3-layer wavelet domain and divides approximation wavelet coefficients into many groups. Through computing mean quantization of per group, this algorithm embeds the watermark signal into the average value of the wavelet coefficients. Experimental results show that our semi-fragile audio watermarking algorithm is not only inaudible and robust against various common images processing, but also fragile to malicious modification. Especially, it can detect the tampered regions effectively.

关 键 词：Semi-fragile Watermarking Wavelet Transform Mean Quantization Tamper Detection 

分 类 号：TN91[电子电信—通信与信息系统] TP317.2[电子电信—信息与通信工程]