基于FPGA的改进四帧差分的运动目标检测算法  

Improved Four-Frame Differential Motion Target Detection Algorithm Based on FPGA

作　　者：刘海波 郭乃宏 周锋[1] 高尚尚 王如刚[1] LIU Haibo;GUO Naihong;ZHOU Feng;GAO Shangshang;WANG Rugang(School of Information Technology,Yancheng Institute of Technology,Yancheng Jiangsu 224051,China;Yancheng XiongYing Precision Machinery Company Limited,Yancheng Jiangsu 224006,China)

机构地区：[1]盐城工学院信息工程学院,江苏盐城224051 [2]盐城雄鹰精密机械有限公司,江苏盐城224006

出　　处：《电子器件》2023年第4期1089-1095,共7页Chinese Journal of Electron Devices

基　　金：盐城工学院研究生实践创新计划项目(SJCX21_XY026);江苏省研究生实践创新计划项目(SJCX21_1517);江苏省高等学校自然科学研究重大项目(19KJA110002);江苏省高等学校自然科学研究面上项目(19KJB510061);江苏省自然科学基金项目(BK20181050);国家自然科学基金项目(61673108);教育部协同育人项目(202101222025,202101363028,202002155005)。

摘　　要：针对运输系统中运动目标在运动垂直方向上边缘信息缺失的问题及运动目标检测实时性差的缺点,提出了一种改进的融合边缘检测算法的四帧差分法,结合现场可编程门阵列(FPGA)芯片的并行工作特性,满足了运动目标检测的实时性要求。改进的四帧差分算法是采用间隔帧间差分的方式,将运动目标区域提取出来与边缘检测相融合,同时利用FPGA中多端口SDRAM图像缓存技术对实时图像进行缓存和输出。系统实现了对运输带上运动目标的检测,结果表明,该算法能够较好地解决在传统帧间差分法中运动目标在运动垂直方向上边缘缺失的问题,同时也能准确且实时地检测出待测运动目标。To address the problem of missing edge information in the motion vertical direction of moving targets in transportation systems and the drawback of poor real-time motion target detection,an improved four-frame differencing method of fused edge detection algorithm is proposed,which meets the real-time requirements of motion target detection by combining the parallel working characteristics of field-programmable gate array(FPGA)chips.The improved four-frame differencing algorithm uses interval inter-frame differencing to extract the moving target region and fuse it with edge detection,while using the multi-port SDRAM image caching technology in the FPGA to cache and output the real-time image.The system achieves the detection of moving targets on the transport belt,and the results show that the algorithm is able to solve the problem of missing edges of moving targets in the vertical direction of motion in the traditional in-ter-frame differencing method,therefore the moving targets to be measured can be detected accurately and in real time.

关 键 词：FPGA 改进四帧差分 SDRAM 运动目标检测 自适应阈值 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]