基于异常检测与双流编码的视频监控系统设计

Design of Abnormal Detection and Dual-stream-encoding Based Video Surveillance System

介绍了一种基于异常检测与双流编码的无线智能视频监控系统的设计方案。该系统首先基于对采集视频的分析,实现非法入侵等异常事件的自动检测,同时通过对同一路视频采用两个编码器进行双流编码,产生两路不同质量和码率的视频流。在此基础上,基于异常事件检测的结果,在有异常事件时触发高质量图像的本地保存和低码率图像的实时无线传输。在蜂窝网络的有限带宽下,该系统在同时实现视频监控所需的实时浏览和事后调阅功能基础上,通过异常事件检测触发存储与传输,实现了无线带宽资源和存储资源的高效利用。

In this paper, one abnormal event detection and dual-stream-encoding based wireless intelligent video surveillance system is proposed. Firstly, the abnormal event, illegal invasion is implemented by live video analyzing. At the same time, two encoders are designed to generate two coded bit-streams： one is encoded with high quality and bit-rate, which is stored in the local storage; the other is encoded with low quality and bit-rate, which is transmitted to the receiver over the wireless network. The local storage and wireless transmission are triggered with the abnormal event detection, thus efficient usage of the wireless bandwidth and local storage resource can be achieved using the proposed system.