| With the rapid development of science and technology, and improvement of people's living standard, people's safety consciousness has been gradually improved and various video monitoring products emerge as the times require. The system mainly used in video monitoring system. Based on real-time monitoring, it can gain the corresponding video monitoring data and storage amounts of video information. Record the people's activity process in the target site, fuse multiple scene of the site condition, and show the picture at the same time. Providing concise, clear, and effective video information to monitoring personnel, improve the work efficiency.Based on DSP and ARM dual-core system, DaVinci technique is solutions of high efficiency, high quality, high flexibility of digital video system design, and specifically tailor for large efficiently processing such as video monitorin system, video player, senior medical image and digital video information. DaVinci technology can achieve the digital video flexible processing effects complete the internal structure optimization. Integrated RISC processors instructions concentrated general ARM processor and digital signal processing, the optimization processor DSP processors, pretty high overall performance.First, this paper introduces the choice of key algorithms of papers multi-channel video composite and playback device. Video composite display technology and video zoom in/out algorithm standard was introduced.At the same time, establish a variety of multiple video synthetic mode, and carries on the simulation.Second, I introduce the overall structure of the multiple video composite and playback device. Introduce the software and the hardware platform of this system. System startup mode and start-up process are analyzed.And configure the NFS file system services. Finally, the application functions of the multiple video composite and playback system are compiled and debugged. The function test of the overall system is completed. |
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