Design Of Real Scene Video Surveillance System Based On ZYNQ

With the rapid development of network technology and digital image technology,network video surveillance systems have been widely used,but there are typical problems:lack of correlation between different monitoring points;inability to balance overall and partial images;lack of enhanced information on things in video images.Therefore,it is of practical significance to research and design a video surveillance system with real-scene fusion function on the embedded platform.Based on the analysis of system requirements,this article first uses the Zynq-7000 series ZYNQ7100 chip introduced by Xilinx to design the overall system scheme,making full use of the high-speed parallel computing capabilities of FPGA and the system management advantages of ARM.In order to realize the function of static label following movement,the camera imaging model was studied,and a 3D-2D transformation relationship for static label following the label was designed.In the system hardware circuit design,in order to ensure the versatility and scalability of the system,a core board plus backplane design is adopted,and the hardware circuit design of the main control backplane is completed on this basis.Software and hardware co-design technology is used in system development.In the hardware logic design,first complete the simulation and design of the TCP/IP network communication in the Gigabit Ethernet,and then through the study of the RTSP protocol and the principle of the RTP protocol,the pure hardware logic design is realized to obtain the video of two network cameras 1080P@25fps Data,and finally the collected video data is transmitted to the PS side DDR through the AXI bus.In the software design part,transplant and run the embedded Linux operating system on the PS side of ZYNQ,and then use multi-threading technology and network communication technology to complete the visual interface design functions such as image acquisition and display,label management,and camera data interaction.Finally,the system is built and the function test is carried out.After the system is accelerated by hardware,the image display frame rate reaches above 20 fps,and the center error of the static label tracking mark is less than 20 pixels.The system designed in accordance with the software and hardware co-design in this article can be achieved while maintaining high performance.1080 P video capture,processing,display and control functions have certain value in the embedded research and design of video surveillance systems.