基于DirectShow框架的实时监测系统的设计与实现

为了监测视频画面中的运动、进行录像存盘并发出提示信号，论文设计并实现了一种基于DirectShow的实时监测系统。为了提高监测的准确性，采用动态阀值背景差分算法进行检测，采用均值滤波器进行除噪处理，检测流程被封装成一个DirectShow的Filter，采集、回放、运动检测、压缩、存盘等过程都采用DirectShow技术实现。运行测试表明系统达到了预期设计目的。

Design and Implementation of A Real-time Surveillance System Based On DirectShow

In order to detect the motion occurring in the video, A real-time surveillance system based on Direction is designed and implemented, and average in which the video is stored in the disk and a prompting signal is also given. Dynamic threshold background image difference algorithm is introduced to obtain higher detection accuracy. Average filter is also adopted to reduce the noise. The detection flow is encapsulated into a DirectShow Filter, camera image gathering, playback, movement detection, image compression and storage are all implemented as a series of DirectShow filters. Running experiment indicates that the expected goals are achieved.