基于随机共振的鲁棒性音频数字水印算法  

Robust audio watermark algorithm based on stochastic resonance

作　　者：张理[1] 何迪[1] 陈攀[1] 胡玲娜[1] 

机构地区：[1]上海交通大学电子工程系,上海200240

出　　处：《计算机工程与设计》2010年第18期4028-4032,共5页Computer Engineering and Design

基　　金：国家自然科学基金项目(60802058)

摘　　要：为了提高应用于版权保护的音频数字水印算法的鲁棒性,提出了一种基于音频混合域随机共振的数字水印算法。在嵌入端,将水印序列嵌入在音频载体的混合域系数中。在检测端,待检测音频的混合域系数在预处理后,作为随机共振系统的输入,通过调节随机共振信号处理器的参数和本文提出的去刺参数以产生随机共振从而实现水印的检测。仿真结果表明,该算法能够在保证水印信息不可感知的前提下抵抗StirmarkForAudio软件的多种攻击,相比常见算法显示出更强的鲁棒性。To improve robust ofthe audio digital watermarking algorithm used in copyright protection, a new audio watermark algorithm based on stochastic resonance in the DWT and DCT domain is proposed. In embed-process, we embed the watermark sequence in the DWT and DCT domain coefficients of audio carriers. In decode-process, after the preprocessing of the audio to be decoded, the DWT and DCT domain coefficients are used as the input of the stochastic resonance system, by adjusting the parameter of the stochastic resonance processor and the deburring parameters which presented, the detection of watermark is achieved. Simulation results show that it can resist most attacks in StirmarkForAudio with unperceived watermark, which shows the stronger robustness of the proposed approach than common algorithms.

关 键 词：随机共振 音频数字水印 混合域 去刺参数 鲁棒性 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]