基于SVAC视频标准的3 G智能手机监控平台设计

摘要

Traditional mobile video surveillance systems adopt general video compression standard such as MPEG-4,H.264,etc.,it is hard to meet the specific security-monitoring demand.In view of this,we design a video surveillance platform upon 3G smartphone,which is based on SVAC security video standard.The client of smartphone surveillance calls self-developed SVACDecoder library function to realise SVAC video decoding through JNI mechanism.It also uses multi-image display to realise multi-channel video surveillance,as well as uses multithread coding to increase the running speed of software.RTP/RTCP transport protocol is used for the transmission of video data to ensure real-time performance and quality of video.It is demonstrated by the prototype test system constructed that it can achieve fluent and stable real-time surveillance,and meets the security-monitoring demands such as ROI (region of interest)coding,layered coding,optimised coding under variable light environment and so on.%传统移动视频监控系统采用MPEG-4、H．264等通用视频压缩标准，很难满足安防监控的特殊需求。针对这种情况，设计一种基于SVAC安防视频标准的3G智能手机视频监控平台。手机监控客户端通过JNI机制调用自主开发的SVACDecoder解码库函数实现SVAC视频解码；客户端多画面播放以实现多路监控，多线程编码以提高软件运行速度；视频数据使用RTP／RTCP传输机制确保视频的实时性和质量。搭建的原型试验系统表明能实现流畅稳定的实时监控，并满足感兴趣区域编码、分层编码、分照度编码等安防需求。