基于运动检测的低码率视频监控系统

Low Bit Rate Video Surveillance System based on Motion Detection

本文提出了一个固定摄像头的低码率视频监控系统。运动检测技术与视频编码结合可以实现较低码率的实时监控,使在网络传输中对带宽、存储介质的需求更低,更经济,更有效。基于动态阈值和背景更新机制的运动检测算法可以有效地检测出当前画面的运动区域,仅对运动区域进行编码。根据测试序列的实验结果显示,在不降低视频质量的前提下,码率得到了有效下降。

The paper describes an indoor video surveillance system of lower bit rate with static camera. The combination of efficient video compression and motion detection realizes lower bit rate real-time monitoring, saving the network resource and storage space. Using the dynamic threshold and background updating, motion detection can efficiently get the moving area which is encoded by H.264. The result shows the bit rate is much lower while video image quality has no change.