摘要
提出了一种可同时用于版权保护与内容认证的半脆弱数字音频肓水印算法.该算法具有以下特点:1)结合音频自身特性,不仅能够自适应划分音频数据段,而且能够智能调节水印嵌入强度,增强了数字音频水印的鲁棒性;2)能够同时进行数字音频的版权保护与内容认证,并可大致确定篡改发生区域.仿真实验表明,文中算法不仅具有较好的不可感知性,而且对常规处理具有较好的鲁棒性,同时能够对替换等恶意篡改作出报警并确定被篡改位置.
Semi-fragile watermarking methods aim at detecting unacceptable malicious manipulations, while allowing for acceptable regular manipulations such as lossy compression. In this paper, a semi-fragile audio watermarking algorithm for copyright protection and content authentication is proposed. The features of the proposed algorithm are as follows: 1) The original audio signal can be adaptively divided, and the watermark depth can be intelligently adjusted according to human auditory masking and local audio character; 2) The copyright protection and content authentication for digital audio can be utilized simultaneously. Experimental results show that our semi-fragile audio watermarking scheme is not only inaudible and robust against various common images processing, but also fragile to malicious modification. Especially, it can detect effectively the tampered regions.
出处
《自动化学报》
EI
CSCD
北大核心
2007年第9期936-940,共5页
Acta Automatica Sinica
基金
视觉与听觉信息处理国家重点实验室(北京大学)开放基金(0503)
信息安全国家重点实验室(中国科学院软件研究所)开放基金(03-06)
大连市科技基金(2006J23JH020)
"图像处理与图像通信"江苏省重点实验室(南京邮电大学)开放基金(ZK205014)
江苏省计算机信息处理技术重点实验室(苏州大学)开放课题基金(KJS0602)资助~~
关键词
半脆弱水印
数字音频
自适应量化
篡改检测
Semi-fragile watermarking, digital audio, adaptive quantization, tamper detection