一种基于双重加密的DWT-DCT域音频公开水印算法  

An Audio Public Watermarking Algorithm Based on Double Encrypting in DWT-DCT Domain

作　　者：杨志疆[1] 赵红[2] 

机构地区：[1]漳州职业技术学院计算机工程系,漳州363000 [2]漳州师范学院计算机科学与工程系,漳州363000

出　　处：《计算机与数字工程》2012年第12期90-93,共4页Computer & Digital Engineering

基　　金：福建省教育厅科技项目(编号:JB11316);漳州职业技术学院科研计划资助项目(编号:ZZY1105)资助

摘　　要：提出了一种新的基于DWT和DCT音频公开水印算法。算法应用图像置乱与混沌原理对水印图像进行双重加密,并充分利用DWT的多分辨率特性与DCT的聚能特性对选取的多段音频进行处理,然后再把加密后的水印嵌入到各段的DCT低中频系数的量化中。仿真实验表明,该算法高效、安全性能好,且具有较好的不可感知性,对常见的音频处理具有较好的鲁棒性。In this paper,a new public audio watermarking algorithm based on DWT and DCT is proposed.The scheme proposes to use image scrambling and chaos encrypting as preprocessing during watermark embedding.It makes full use of the multi-resolution of DWT and the energy concentrated of DCT and enbeds encrypted watermark by quantification process in DC and several low frequency AC coefficients of the audio signal.Experimental results show that the proposed scheme has good performance of computing efficiency,security,imperceptibility,highly good robustness to common audio processing operation.

关 键 词：音频公开水印 DWT DCT 加密 鲁棒性 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]