第23卷第2期江苏建筑职业技术学院学报Vol.23№.22023年6月JOURNALOFJIANGSUVOCATIONALINSTITUTEOFARCHITECTURALTECHNOLOGYJun.2023基于SIFT图像匹配算法的桥梁变形室内试验研究杨声1,靳云鹏2,单海涛1,罗涛3,王静1,余均发1,吴秀秀3(1.宿迁市公路事业发展中心,江苏宿迁223899;2.中国矿业大学力学与土木工程学院,江苏徐州221116;3.宿迁市洋河新区旅游交通建设局,江苏宿迁223839)摘要:全景拍摄图像处理在桥梁变形监测中受透视效应影响较大,故提出了旋转拍摄拼接方法。为研究其精度,制备了钢筋混凝土梁模型,通过四点弯曲试验模拟桥梁变形状态。数据采集方式包括百分表测量、全景拍摄和旋转拍摄。通过SIFT算法实现相邻图像匹配拼接工作,对两种方法测量结果进行对比分析。室内试验研究结果表明,旋转拍摄在变形测量上具有更高的精度,利用SIFT函数进行特征点提取及匹配,可以得到连续图像的高精度拼接效果图。本研究为旋转图像拍摄方法实时监测桥梁变形提供了实验依据。关键词:SIFT算法;变形;全景拍摄;旋转拍摄;图像处理中图分类号:U446;TP391.41文献标志码:A文章编号:20953550(2023)02000104LaboratoryexperimentalstudyonbridgedeformationbasedonSIFTimagematchingalgorithmYANGSheng1,JINYunpeng2,SHANHaitao1,LUOTao3,WANGJing1,YUJunfa1,WUXiuxiu3(1.SuqianHighwayDevelopmentCenter,Suqian,Jiangsu223899,China;2.SchoolofMechanicsandCivilEngineering,ChinaUniversityofMiningandTechnology,Xuzhou,Jiangsu221116,China;3.TourismTrafficConstructionBureauofYangheNewDistrict,Suqian,Jiangsu223839,China)Abstract:Panoramicshootingimageprocessingisgreatlyaffectedbyperspectiveeffectinbridgedeformationmonitoring,soarotationalshootingstitchingmethodisproposed.Inordertostudyitsaccuracy,areinforcedconcretebeammodelwasprepared,andthedeformationstateofthebridgewassimulatedbyafour-pointbendingtest.Dataacquisitionmethodsincludedialgaugemeasurement,panoramicshootingandrotationshooting.Theadjacentimagematchingandstitc-hingworkisrealizedbytheSIFTalgorithm,andthemeasurementresultsofthetwomethodsarecomparedandanalyzed.Theresultsofindoorexperimentsshowthatrotationalshootinghashigheraccuracyindeformationmeasurement,andtheSIFTfunctionisusedtoextractandmatchfeaturepoints,andhigh-precisionstitchingeff...
