数字摄影测量在道路选线中的应用

Application of Digital Photographic Survey to Path Route Selection

计算机技术的飞速发展,给道路设计带来了极大的方便,数字摄影测量在道路选线中的应用,其过程主要是利用全数字摄影测量系统(VirtuoZo)生成DEM(数字高程模型),由建立的带状DEM内插出带状横断面,自动绘制公路路线平面地形图;再根据平面曲线各个测点的平面坐标和带状DEM内插线状纵断面,最后将线状纵断面进行平滑处理.

With the rapid development of computer technology,enormous convenience is brought for the roads design.The application of the digital photographic survey to the path route selection is indroduced.The process is mainly elaborated.Firstly use entire digital photographic survey system（VirtuoZo） to produce DEM（digital elevation model）,through the belt-shaped DEM interpolation,go beyond a line belt-shaped cross section,and automatically draw the level topographic diagram.Then according to the place coordinates of the level tune segment measuring point and the belt-shaped DEM,interpolate striation longitudinal section.Finally carry on the striation longitudinal section smooth processing.