一种基于QoS的远程监控系统模型  

Framework of a Remote Surveillance System Based on QoS

作　　者：杜润秋[1] 周兵[1] 李波[1] 

机构地区：[1]北京航空航天大学计算机系数字媒体室,北京100083

出　　处：《计算机科学》2003年第2期89-91,F004,共4页Computer Science

基　　金：国家自然基金(60075006); 国家高技术研究发展计划专项经费(2001AA114142); 教育部博士点基金

摘　　要：This paper introduces the framework of a remote surveillance system and key technologies to implementthe 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. Errorcorrection 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.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.

关 键 词：远程监控系统 服务质量 视频编码 计算机 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]