改进四帧差分运动目标检测算法的FPGA实现  

Improved Four-Frame Difference Motion Target Detection Algorithm Implemented on FPGA

作　　者：严飞[1,2] 孟川 郑绪文 李楚 刘银萍 YAN Fei;MENG Chuan;ZHENG Xuwen;LI Chu;LIU Yinping(School of Automation,Nanjing University of Information Science and Technology,Nanjing Jiangsu 210044,China;Jiangsu Collaborative Innovation Center for Atmospheric Environment and Equipment Technology,Nanjing Jiangsu 210044,China;School of Emergency Management,Nanjing University of Information Science and Technology,Nanjing Jiangsu 210044,China)

机构地区：[1]南京信息工程大学自动化学院,江苏南京210044 [2]江苏省大气环境与装备技术协同创新中心,江苏南京210044 [3]南京信息工程大学应急管理学院,江苏南京210044

出　　处：《通信技术》2024年第11期1213-1220,共8页Communications Technology

基　　金：江苏省重点研发计划(BE2020006-2);国家自然科学基金(61605083)。

摘　　要：针对传统的帧间差分运动目标检测算法易出现虚假边缘及边缘缺失等现象,设计了一种改进的四帧差分运动目标检测系统,将图像边缘信息与四帧差分算法相融合对运动目标进行检测,并在现场可编程门阵列(Field Programmable Gate Array,FPGA)平台上构建了视频图像处理系统。该系统主要由图像采集模块、图像缓存模块、图像处理模块和图像显示模块4个部分组成。通过OV5640摄像头采集1 024×768分辨率的图像数据,将采集的图像数据存入DDR3中,并采用改进的四帧差分算法对运动目标进行检测与标记,最终传输至高清多媒体接口(High-Definition Multimedia Interface,HDMI)外接显示器实时输出结果。实验结果表明,该系统可以准确检测出摄像头采集的视频源中的多个运动目标,并满足实时检测要求。In response to the common issues of false edges and edge loss in conventional inter-frame difference motion target detection algorithms,this paper proposes an improved four-frame difference motion target detection system.It integrates the image edge information with the four-frame difference algorithm to detect moving targets,and builds a video image processing system on the FPGA(Field Programmable Gate Array)platform.The system mainly consists of four parts:image acquisition module,image cache module,image processing module,and image display module.Image data with a resolution of 1024×768 is captured by the OV5640 camera,the captured image data is stored in DDR3,and the improved four-frame difference algorithm is used to detect and label the moving target,which is finally transmitted to the HDMI(High Definition Multimedia Interface)external display to output the results in real time.Experimental results demonstrate that the system can accurately detect multiple moving targets in the captured video source,

关 键 词：改进四帧差分 FPGA 边缘检测 DDR3 多运动目标检测 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]