航测地形图DEM的获取和处理技术  

Acquiring and Processing DEM from Aerial Survey Topographic Drawings

作　　者：程耀东[1] 张丽萍[1] 董明才 韩进[1] 

机构地区：[1]兰州交通大学数理与软件工程学院,甘肃兰州730070 [2]铁道第一勘查设计院,甘肃兰州730000

出　　处：《工程图学学报》2008年第3期56-61,共6页Journal of Engineering Graphics

基　　金：甘肃省建设厅科技攻关资助项目(GK2001-04);兰州交通大学“青蓝人才工程资助计划”基金资助项目(2004-03-01)

摘　　要：在对航测地形图(.DWG)中图形实体的属性、存储结构和图形数据库进行分析的基础上,研究了从航测地形图中获取数字高程模型的方法,并运用Visual C++6.0语言与ObjectARX 2002开发工具实现了DEM的提取,同时对多种DEM数据的存储格式和处理方法进行了探讨,为线路设计自动化提供了数字高程模型。该成果已用于公路与铁路选线设计部门,极大地提高了设计效率,取得良好经济效益。The method of how to acquire the figure altitude from aerial survey topographic drawings is proposed based on the analysis of attribution, memory framework and graphic database in the aerial survey topographic drawings. The system is developed using Visual C＋＋6.0 and ObjectARX 2002 with the functions of processing multi-memory formats and multi-method for DEM to provide the figure altitude model for route design automation. The achievement has been used in the route selection of highway and railway, which has improved the design efficiency greatly.

关 键 词：计算机应用 航测地形图 数字高程模型 ObjectARX开发工具 图形交换文件 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]