基于水印序号的抗裁剪音频数字水印算法  

Anti Cropping Synchronization Audio Digital Watermark Algorithm Based on Watermark Sequence Number

作　　者：王虹[1] 孙毅[1] 

机构地区：[1]武汉理工大学信息工程学院,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2008年第3期481-484,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家重点实验室基金项目资助(批准号:2003005)

摘　　要：提出一种基于水印序号的抗裁剪音频数字水印算法.该算法在音频信号中嵌入同步码、水印序号和二值水印图像,具有如下特点:利用同步技术,能有效对抗音频信号受到的随机裁剪攻击;水印序号的嵌入,能使检测到的水印信息自动定位在图像上.仿真实验表明,该算法在抵抗加性噪声和裁剪攻击等方面达到了较高的鲁棒性.A new blind digital audio watermarking scheme is presented in this paper. In order to combat against cropping effectively, synchronization codes and watermark sequence numbers are embedded in DCT domain. The virtue of the method, compared with other synchronization algorithms, is that it can recover the watermark according to the original structure effectively under cropping attack. Satis-fying imperceptivity of the watermark signal can be reached by adjusting the strength of data hided into audio. The experimental results show that the watermarking scheme is robust against attacks such as cropping, Gaussian noise corrupting, resampling, and requantizating.

关 键 词：音频数字水印 水印序号 自定位 抗裁剪 盲检测 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]