基于图像处理的轨道位移监测系统研究  

TRACK DISPLACEMENT MONITORING SYSTEM BASED ON IMAGE PROCESSING

作　　者：刘有桥 Liu Youqiao(China Railway Major Bridge Reconnaissance and Design Institute Co.,Ltd.,Wuhan 430050,Hubei,China;China Railway Major Bridge(Nanjing) Bridge and Tunnel Inspect and Retrofit Co.,Ltd.,Nanjing 210061,Jiangsu,China)

机构地区：[1]中铁大桥勘测设计院集团有限公司,湖北武汉430050 [2]中铁大桥(南京)桥隧诊治有限公司,江苏南京210061

出　　处：《计算机应用与软件》2019年第1期246-250,315,共6页Computer Applications and Software

基　　金：国家重点研发计划(2016YFC0802202);江苏省科技厅重点研发计划(BE2018049)

摘　　要：在高铁桥梁轨道伸缩调节器处的轨道位移是影响行车安全的关键薄弱点。对该处轨道的位移监测非常必要,但是在高铁线路上是不允许安装任何设备的。为了解决实时监测的需求,研究基于图像处理的位移监测系统。在轨道侧边安装固定摄像机,定时拍摄照片;使用数字图像处理算法计算出轨道的实际位移。为了达到比较好的效果,使用相位相关法求相对位移,并且使用傅里叶梅林变换解决相机振动后偏移和更换后需要重新标定变焦倍数的问题。该系统实现实时自动测量,并且取得较好的测量精度,解决非接触测量的需求。The track displacement at the high-speed railway bridge telescopic adjuster is the key weakness affecting traffic safety.It is necessary to monitor the track displacement,but no equipment is allowed to be installed on the high-speed railway line.In order to solve the needs of real-time monitoring,we studied a displacement monitoring system based on image processing.The fixed camera was installed on the side of the track and took photos regularly.The actual displacement of the track was calculated by using the digital image processing algorithm.In order to achieve better results,the phase correlation method was used to calculate the relative displacement,and the Fourier-Mellin transform was used to solve the problem of camera deflection after vibration and the need to re-calibrate the zoom multiple after replacement.This method realizes real-time automatic measurement,and achieves better measurement accuracy,and solves the demand of noncontact measurement.

关 键 词：图像处理 相位相关 梅林变换 位移监测 非接触测量 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]