基于音频内容的混合域脆弱水印算法  

Content-based Fragile Audio Watermarking in Hybrid Domain

作　　者：范明泉[1] 王宏霞[1] 

机构地区：[1]西南交通大学信息科学与技术学院,四川成都610031

出　　处：《铁道学报》2010年第1期118-122,共5页Journal of the China Railway Society

基　　金：国家自然科学基金资助项目(60702025);教育部高等学校博士学科点专项基金(20070613024);四川省青年科技基金(07ZQ026-004);西南交通大学博士创新基金(2010)

摘　　要：提出一种用于内容认证的脆弱音频水印算法。与以往的脆弱音频水印算法相比,不采用二值图像作为脆弱水印,而是基于音频内容,利用奇异值分解生成脆弱水印。水印嵌入在离散小波变换和离散余弦变换构成的混合域。仿真实验表明,该算法具有很好的不可感知性,并且对有损压缩、添加噪声、重量化等操作具有很强的敏感性,同时能够对替换等恶意篡改做出报警并确定篡改位置。A novel fragile audio watermarking scheme for content authentication was proposed in this paper. Compared with traditional fragile audio watermarking schemes, instead of using the binary image as the fragile watermark, singular value decomposition（SVD） was adopted to generate the fragile watermark based on the audio content in this scheme. The generated fragile watermark was embedded in the hybrid domain. Experimental results show that our fragile watermarking scheme is not only inaudible and sensitive against the MP3 attack, additive noise, re-quantization, etc, but also fragile to malicious modification. Especially, it can detect and localize the tampered regions effectively.

关 键 词：脆弱音频水印 奇异值分解 混沌 非均匀量化 篡改定位 

分 类 号：TN911[电子电信—通信与信息系统]