复杂大地形下铁路与沿线环境三维自动化建模  

3D Automatic Modeling of Railway and Environment Along Large Terrain

作　　者：位喜会 唐兆[1] 马宗 袁晓林 张建军[1] WEI Xihui;TANG Zhao;MA Zong;YUAN Xiaolin;ZHANG Jianjun(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031

出　　处：《机械制造与自动化》2020年第2期101-104,共4页Machine Building & Automation

基　　金：国家自然科学基金资助项目(51405402;51475396)。

摘　　要：铁路与沿线环境的大规模三维模型在铁路维护、应急救援、运行可视化等领域广泛应用。提出了一种利用开源地理信息和三维大地形技术相结合的铁路与沿线环境自动化建模方法。该方法利用卫星图对目标线路所在的地理环境进行重建,提取铁路线路的特征点,进而插值获取整条线路。通过对线路离散与坐标变换,建立起复杂地形下任意长大线路三维模型。通过案例验证表明,该方法可有效应对大范围复杂地形的铁路线路和沿线环境自动化建模,显著提高了线路建模的效率。Large-scale 3D models of railways and environments along the railway line are widely used in railway maintenance,emergency rescue,and operational visualization.An automatic modeling method of the railway and environment is proposed,in which the open source geographic information is combined with 3D terrain.The satellite image is used in this method to reconstruct the geographical environment where the target line is located,which is used to extract the feature points of the railway line,then interpolate thus obtaining the entire line.Based on the line discretization and coordinate transformation,the 3D model of arbitrary long lines in the difficult terrain is established.The case shows that the method can be used to effectively deal with the automatic modelling of the railway line and the environment in the large-scale difficult terrain,thus significantly improving the efficiency of the line modeling.

关 键 词：复杂大地形 长大铁路线路 自动化建模 线路绑定 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]