The paper is focused the discussion on the problems of background map digitization, dialog box, polygon topology etc.
本文着重讨论底图数字化、对话窗、多边形拓扑等关键问题。
The topographic map scanning digitization is an important acquisition method for GIS data, which has become the mainstream of the map digitization.
地形图扫描数字化为GIS数据源的一种重要获取手段，已经成为地图数字化的主流。
According to the user's requirements for map digitization and data structure, this paper designs a "polygon-chain" combined sampling method and a sampling program.
本文从用户对地图数字化采样工艺和数据结构的需求出发，设计了“图斑——链”综合采样方法，并编写了与之相应的程序。
At present, the main ways to obtain DEM are: ground measurements method, the paper map digitization method, space-sensors based methods and digital photographic methods.
目前获取DEM的主要方式有：地面测量方法、现有地图数字化法、基于空间传感器法及数字摄影测量法。
Maps as being the most fundamental and essential data sources of database as well as GIS and RS, data precision of map digitization has become a matter of common interest to all related disciplines.
地图作为地图数据库、地理信息系统、遥感等最基础和最重要的数据源，其精度问题已成为各学科共同关注的问题。
This paper gives a method of computer aided digitization for map plate-making, introducing its working process and advantages.
本文主要介绍一种采用微机进行地图数字化处理并进行地图制版的方法，阐述了其优越性。
Map scanning digitization is one of the ways to capture spatial data in GIS. After digitization, the geometrical figure and area of a figure may change because of errors.
地图扫描数字化是GIS数据采集的重要手段，地图上的图形经扫描数字化后，其几何形状和面积因误差的存在而发生改变。
A method of digitization of map information was mathematically conducted and a computer programme was developed, according to the coordinate systems in cylinder and cone map projections.
根据地图投影坐标系，经过数学推导，将地图信息要素进行数字化。
A method of digitization of map information was mathematically conducted and a computer programme was developed, according to the coordinate systems in cylinder and cone map projections.
根据地图投影坐标系，经过数学推导，将地图信息要素进行数字化。
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