摘要
根据线性预测理论,利用预测滤波器对噪声的整形作用提出一种基于载体内容的水印构造方法.理论分析和实验结果表明,用这种方法构造出来的水印包络与载体包络是相似的,并具有较强的不感知性和鲁棒性.
According to the linear prediction theory, a host signal-based watermark construction method used with the noise shaping characteristic of linear prediction filter was presented. The theoretical analysis shows that the envelope of watermark signals is similar to that of the host signals, after which it was verified by experiments. It is concluded that the work we have done on watermark has strong imperceptibility and robustness.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2004年第3期73-77,共5页
Journal of Beijing University of Posts and Telecommunications
基金
北京市自然科学基金项目(4042022)
国家"973"项目(G1999035804)
教育部优秀青年教师资助计划项目
关键词
数字水印
线性预测
视觉模型
听觉模型
Algorithms
Image processing
Security of data
Time domain analysis
