%0 Journal Article
%T Framework of a Remote Surveillance System Based on QoS<br>一种基于QoS的远程监控系统模型
%A DU Run-Qiu ZHOU Bin LI Bo
%A <br>杜润秋
%A 周兵
%J 计算机科学
%D 2003
%I 
%X This paper introduces the framework of a remote surveillance system and key technologies to implement the framework. A codec based on MPEG-4 is developed to encode and decode video. Both ratio and speed of compression of the codec are improved through the optimal designs of motion estimation,quatization and rate control. Error-correction functions added to entropy coding of the codec minimize the loss of quality of images due to transmission error. With a QoS mechanism of transmission and playback based on a simple RTP protocol,this framework is able to adapt bandwidth and to control congestion.
%K Remote surveillance
%K Video compression
%K Video transmission
%K QoS<br>远程监控系统
%K 服务质量
%K 视频编码
%K 计算机
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=91B14E715EE81CE1&yid=D43C4A19B2EE3C0A&vid=340AC2BF8E7AB4FD&iid=0B39A22176CE99FB&sid=CFAC5CB624A41AFD&eid=C753EB8AC8F551B9&journal_id=1002-137X&journal_name=计算机科学&referenced_num=1&reference_num=11