摘要
针对传统的数字水印技术在视频中嵌入水印信息会导致视频图像在一定程度上的失真,且视频受到各种攻击后难以提取出水印,尤其不能抵抗H.264的高性能压缩编码的问题,提出了一种利用contourlet变换的零水印算法。该方法利用contourlet变换的低频系数分量来构造水印密钥,不改变原始信号的感知质量,仿真试验表明,该方法能有效的对抗H.264的三种压缩模式,能抵抗大部分水印算法难以抵抗的旋转攻击,满足水印的透明性、鲁棒性和视频高压缩率、丢帧等的多重要求。
Traditional digital watermarking techniques that protect the image copyright by embedding the watermark into image would lead to distortion,and it is difficult to extract watermark from attacked images.especially the problem of being unable to resist the high performance compression code,To solve the problems,an using contourlet transform zero-watermarking algorithm has been put forward.Such a method doesn＇t change the original video signals or the perceived quality of the original signal and can resist three compression modes of H.264,satisfying multiple requirements such as the transparency,robustness,frames lost and video high pressure ratio of watermark.
出处
《微计算机信息》
2010年第35期82-84,共3页
Control & Automation
基金
湖南省教育厅科技计划资助(09C041)
