H.264中基于检测与追踪的人脸保护方案  

Face protection of H.264 based on detecting and tracking

作　　者：齐美彬[1] 陈晓蕊[1] 詹曙[1] 蒋建国[1] 

机构地区：[1]合肥工业大学计算机与信息学院

出　　处：《计算机应用研究》2008年第6期1802-1805,共4页Application Research of Computers

基　　金：国家自然科学基金资助项目(60474035);国家教育部博士点基金资助项目(20060359004);教育部留学归国人员科研启动基金(413117)

摘　　要：目前视频安全得到了人们的广泛关注,许多视频加密算法提出并得到了应用。但这些视频加密算法基本上是针对整帧图像的加密,并未考虑对图像中某些感兴趣的区域进行加密,往往增加了通信成本。针对此问题,提出了一种有效安全的感兴趣人脸区域保护方案,方案包括肤色信息和基于方向特征Bayes分类器相结合的人脸精确定位,基于Kalman滤波器的人脸预测跟踪以及H.264的CABAC编码中人脸区域的加密。实验结果表明,该方案不仅具有抗攻击性,而且安全有效地保护了感兴趣人脸区域。With more and more attention on security in video,people have proposed many video encryption algorithms and many of them have been put into application.However,these algorithms encrypted the whole frame,they didn＇t consider regions of interest,this would increase the communication cost.This paper proposed a safe protection scheme of interesting facial region.This approach included rough face detection based on skin-color model,accurate facial region location based on Bayes classifier depending on direction character convolved by Sobel filter,prediction based on Kalman filter and encrypt face region in CABAC coding.Experimental results show that this approach has better quality of anti-attack and protect interesting facial region effectively.

关 键 词：H.264 人脸检测 人脸追踪 CABAC 加密 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]