视频会议实时质量评价系统设计与实现

Design and Implementation of Real-Time Quality Evaluation for Video Conference System

多点视频会议中,实时监测各节点的视频质量以实现故障的快速定位,对于保障视频会议质量具有重要的意义。因此,针对视频会议中常见的13种视频缺陷,设计并实现了节点视频质量实时评价软件。软件包括GUI主线程、视频采集线程及视频质量评价线程,通过线程间的协作,实现了多路视频信号在试机试线状态下的全参考质量评价和在线运行状态下的无参考质量评价,并提供报警和日志功能。测试结果表明,设计的软件运行稳定,检测质量可信,在Xeon 3106 CPU平台下能达到5 fps的检测速度,满足实时监测需求。

In a multi-node video conference system,in order to assure the conference quality,it’s necessary to monitor the video quality of each node in real time and locate the faults quickly.This paper designs and implements a real-time video quality evaluation software for each node to detect 13 common defects usually occurred in video conference.The designed software includes GUI main thread,video capture thread and video quality evaluation thread.Through the collaboration between threads,the full reference quality evaluation under testing status and non-reference quality evaluation under online status for multi-channel video signals are realized,alarming and logging functions are also provided.The test results show that the software runs stably and the detection results are credible.On the Xeon 3106 CPU platform,it can achieve the detection speed of 5 fps,which meets the requirements of real-time monitoring.