基于EPS平台的地形图高程修正插件开发

Development of topographic map elevation correction plug-in based on EPS platform

二维地形图主要通过高程点和等高线表达高程信息,除高程点和等高线的高程值准确外,其余地物仅要求平面坐标准确,其高程值并不一定正确。对此类地形图基于倾斜三维模型修测时,会出现地形图与三维模型高程不贴合现象。该现象导致作业人员在三维视角下查看对比十分困难,同时,巨大的高差占据大量内存,极易造成软件卡顿甚至崩溃。为解决上述问题,本文基于EPS平台模板定制技术及脚本开发技术,开发了二维地形图高程修正插件,该插件可有效修正图中异常高程值,将二维地形图与倾斜三维模型贴合度提升至米级精度,值得业内人士参考和借鉴。

2D topographic maps mainly shows the elevation information through elevation points and contour lines,in addition to the accurate elevation values of elevation points and contour lines,other features only require accurate plane coordinates,and their elevation values are not necessarily reasonable.When this kind of topographic map is modified with reference to a 3D oblique model,the topographic map does not match with the elevation of the 3D model.This makes it very difficult for operators to view the comparison in 3D perspective,and the large height difference occupies a large amount of memory,which can easily cause software jamming or even crashing.In order to solve the above problems,this paper compiles a 2D topographic map elevation correction plug-in based on the template customization technology and script development technology of the EPS platform.The 2D topographic map elevation correction plug-in can effectively correct the abnormal elevation values in the map,and improve the fit between the 2D topographic map and the 3D oblique model to meter-level accuracy,it can be referenced by the industry.