基于ICP算法的桥梁变形研究  

Research on Bridge Deformation Based on ICP Algorithm

作　　者：卞晨艳[1] 郑德华[1] 苏磊 

机构地区：[1]河海大学地球科学与工程学院,江苏南京210098 [2]长江南京航道局,江苏镇江212000

出　　处：《水利与建筑工程学报》2012年第5期52-54,81,共4页Journal of Water Resources and Architectural Engineering

基　　金：中央高校基本科研业务费专项资金资助(2010B08414);河海大学自然科学基金(2009423811);江苏省交通科学研究计划项目(09Y08)

摘　　要：针对桥梁表面变形特征,提出采用ICP算法配准两期桥梁表面点云数据,并利用获得的配准残差量提取桥梁表面局部变形的方法。通过优化距离阈值函数中比例因子k确定距离阈值,作为识别桥梁表面变形量的指标。实验结果表明,当比例因子k取1.5时,距离阈值取值合理,采用ICP算法提取两期桥梁表面相对变形量是较为准确和有效的。For the deformation characteristics of bridge surface, the ICP algorithm is introduced to register the bridge surface＇s point-cloud data of two periods, and the partial surface deformation is extracted by using the registered residual value acquired above. As the bridge surface＇s deformation index, the distance threshold value is determined by optimiz- ing the scaling factor of distance threshold function. The experiment shows that when the scaling factor is taken as 1.5, the distance threshold value is reasonable, and the bridge surface＇ s relative deformation of two periods extracted by the ICP algorithm is accurate and efficient.

关 键 词：桥梁变形 ICP算法 阈值 

分 类 号：U448[建筑科学—桥梁与隧道工程]