地面三维激光扫描技术在公路建模中的应用

为解决传统技术获取公路数据效率低,数据不够精确与详细的问题,本文提出了将地面三维激光扫描技术应用于公路建模的数据采集方案和数据处理方法。根据地面激光扫描的特点和公路建模要求,设计出按最佳扫描距离进行分段设站、分块扫描的数据采集方案。经过点云配准和滤波等预处理后,利用点云几何信息进行了数字表面模型、等高线、纵横断面等模型生成。本文以Trimble GS200地面三维激光扫描仪为例对高速公路路面进行数据采集,以Realworks Survey5.0作为建模工具进行路面建模。结果表明采集方案能提高获取原始数据的效率,并且保证了数据质量,降低了数据处理的复杂程度。

Application of terrestrial 3D laser scanning to highway modeling

In order to resolve the problems of efficiency,precision and details in collecting highway data,this paper introduces data collecting and processing methods for highway modeling with terrestrial laser scanning.According to the specialty of terrestrial laser scanning and requirements of highway modeling,a data-collecting scheme of subsection and block scanning style in best scanning distance is designed.Digital surface model,contour,cross-section and profile model are created after registration,geo-referencing and segmentation.Trimble GS200 laser scanner is used to collect data and Realworks Survey 5.0 is the processing software for modeling.The result shows that the data-collecting scheme in this paper can improve working efficiency,insure data quality and predigest data processing.It can provide good data resource in further modeling.