Design and realization of real time video monitoring system based on key-frame extraction

The amount of information in real-time video monitoring is very large. So, the disk space is used largely, and the network congestion is easy to caused. In order to reduce the network congestion, save storage space, take out noneffective information in video, video key-frames are extracted in sending end and video is resumed in receiving end. A real-time video monitoring system is implemented. A kind of key-frame extracting algorithm is adopted in the system. MPEG compressed video stream is processed by the algorithm. Video is transfer by RTP protocol. So, the problems such as large amount of information, utilizing high bandwidth and video information redundancy etc. are solved.