基于FPGA的运动目标实时检测系统设计

Design of a real-time motion target detection system based on FPGA

目标检测是智能安防领域中的重要研究内容,为满足安防检测系统的小型化和高实时性的使用需求,设计了一种基于FPGA (Field Programmable Gate Array,现场可编程门阵列)的运动目标实时检测系统,采用CMOS摄像头采集视频图像,DDR3 SDRAM作为视频图像帧的缓存介质,结合FPGA器件的可并行处理特点,采用流水线技术对帧间差分检测算法进行模块化处理,检测结果通过以太网传输至上位机,实现了图像采集和运动目标检测及显示。实验测试结果表明,该系统能够快速准确地检测出运动目标,稳定性高,实时性好。

Target detection is an important research content in the field of intelligent security.To meet the requirements of minia‐turization and high real-time usage,a kind of real-time detection system is designed based on FPGA.The CMOS camera is used to collect video image.DDR3 SDRAM is taken as the cache medium of video image.Combined with the parallel processing char‐acteristics of FPGA devices,the pipeline technology is used to modularize the inter-frame difference detection algorithm.The de‐tection results are transmitted through Ethernet,which realizes image acquisition and motion object detection and display.Experi‐mental test results show that the proposed system can detect moving targets quickly and accurately,with high stability and good real-time performance.