基于视频关键帧的水印嵌入算法研究  

Video Watermarking Scheme Based on Key Frames

作　　者：吴静丽[1] 马建斌[1] 沈年凤[1] 张文明[1] WU Jing-li,MA Jian-bin,SHEN Nian-feng,ZHANG Wen-ming（Computer Science and Communication Engineering of Jiangsu University,Zhenjiang 212013,China）

机构地区：[1]江苏大学计算机科学与通信工程学院,江苏镇江212013

出　　处：《电脑知识与技术》2010年第8期6328-6330,共3页Computer Knowledge and Technology

摘　　要：现有视频水印技术需将水印同等嵌入到所有视频帧中进行版权保护,这大大增加水印嵌入负担。为减少资源浪费,提高水印嵌入效率,该文提出了一种在视频关键帧中嵌入水印的算法。该算法首先利用PCA方法提取出视频帧的主要特征,并根据此内容进行聚类,进而得到关键帧;然后在关键帧中嵌入水印图像。该算法思想简单,容易实现,实验表明该算法能够极大地提高视频水印嵌入的速度,视频水印的鲁棒性也得以加强。For copyright protection,modern techniques of video watermark embed the watermark into all frames which increases the embedding burden.In order to reduce the waste of resources and improve the efficiency of watermark embedding,this paper presents a new techinique for embedding the watermark into key frames of a video.In this method,PCA is applied to obtain the main features of frames and the key frames are extracted after clustering.Lastly,the watermark is embedded into those key frames.This algorithm is simple and easy to be implemented.Experimental results show that it can greatly improve the speed of embedding with the better robustness of the watermark.

关 键 词：关键帧 PCA 聚类 DCT 

分 类 号：TP37[自动化与计算机技术—计算机系统结构;自动化与计算机技术—计算机科学与技术]