基于启发式搜索的音频水印方案

Audio Watermarking Based on Heuristic Search

针对基于DWT-DCT-SVD的音频水印方案的不可感知性和鲁棒性相互制约,提出一种基于启发式搜索的音频水印嵌入方法.分析嵌入强度与不可感知性和鲁棒性之间的关系,构建音频水印嵌入强度的优化模型,设计一种启发式的搜索算法进行求解.实验表明,该水印方案可获得较好的不可感知性,能抵抗多种信号处理攻击和Stir Mark攻击.

To solve the constraint relationships between robustness and imperceptibility of the DWT-DCT-SVD based audio watermarking, a watermarking scheme based on heuristic search is proposed in this paper. Relations among embedding strength, imperceptibility and robustness are analyzed. An embedding strength optimization model is constructed according to these relations, and a heuristic search algorithm proposed to obtain the solu- tion. Comparative experiments show that the proposed solution has good imperceptibility, and can resist various signal processing and StirMark attacks.