基于LSD和改进YOLOv2的压力表识读方法  

Pressure Gauge Reading Method Based on LSD and Improved YOLOv2

作　　者：石孟曦 张文红 张磊 郭佑民[1,3] SHI Meng-xi;ZHANG Wen-hong;ZHAN GLei;GUO You-min(Institute of Mechanical and Electrical Technology,Lanzhou Jiaotong University,Lanzhou Gansu 730070,China;Scientific Research and Technical Supervision Institute of China Railway Lanzhou Bureau Group Co.,Ltd.,Lanzhou Gansu 730000,China;Gansu Province Logistics and Transportation Equipment Information Engineering Technology Research Center,Lanzhou Gansu 730070,China)

机构地区：[1]兰州交通大学机电技术研究所,甘肃兰州730070 [2]中国铁路兰州局集团有限公司科研技术监督所,甘肃兰州730000 [3]甘肃省物流及运输装备信息化工程技术研究中心,甘肃兰州730070

出　　处：《计算机仿真》2023年第5期284-288,294,共6页Computer Simulation

基　　金：国家自然科学基金资助项目(72061021)。

摘　　要：针对实际场景下的压力表读数识别不精准、同时指针定位有误等问题,提出了将LSD方法与YOLOv2目标检测算法相结合的方法。利用YOLOv2检测当前图像中的表盘区域,并结合目标仪表的特征,使用残差网络ResNet50替换了原本的基础网络构架,进一步对其网络结构进行改进。通过LSD直线检测方法获得表盘指针,得到其精准位置信息,结合角度法得到待测压力表的压力读数。实验结果表明,上述方法提高了压力表读数识别的准确性和实时性,同时具有较高的稳定性。Aiming at the problems of inaccurate recognition of pressure gauge readings and incorrect pointer posi-tioning in actual scenes,a method combining the LSD method with the YOLOv2 target detection algorithm is pro-posed.The YOLOv2 was used to detect the dial area in the current image,and combined with the characteristics of the target instrument,the residual network ResNet50 was used to replace the original basic network structure and fur-ther improve its network structure.The dial pointer was obtained through the LSD linear detection method,and its precise position information was obtained,combined with the angle method to obtain the pressure reading of the pres-sure gauge to be measured.The experimental results show that the above method improves the accuracy and real-time performance of the pressure gauge reading recognition,and at the same time has higher stability.

关 键 词：指针式压力表 目标检测 变换 直线检测 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]