地形图数字化误差造成地物几何形变，采用测量平差的理论方法可以减弱形变。
The digitalization errors of topographic map result in geometry change for the objects on the earth. We can reduce geometry change by means of measuring adjustment.
本文论述了建立利用多种资料进行地形图数字化快速修测系统的基本原理及其基本功能。
This paper focuses on the fundamental principle of establishing the quick digitizing revision system with much refresh information. discusses the fundamental function of this system.
利用MAPGIS实现地形图数字化是获取空间地理信息数据的主要手段之一，而图形数字化过程中会产生各种类型的误差。
To implement topographic map digitalization by means of MAPGIS is one of main means of getting spatial geographic information data, and that digitalization could bring out diversified sorts of errors.
地形图的数字化对构建地理信息系统有十分重要的意义。
Digitization of topographical maps is significant for creating geographical information system.
对于采用本方法计算淹没区，准确性受地形图等高距大小、数字化采集精度、数字地面模型（DEM）高程精度以及格网间隔大小、像素探测分辨率等因素的影响。
The accuracy of flood area is mostly dependent on the contour interval of map, accuracy of digitizing map, accuracy of DEM, and interval of GRID, detecting resolution of pixels.
实现了基于地形图扫描数字化的航摄规划设计的基本功能。
The basic functions of the flight plan of aerial photography based on scanned topographic map are achieved.
基于地球同步卫星定位原理，分析了当利用数字化地形图提供测站高程时测站的多解和无解现象。
According to the Earth synchronous satellite positioning principle, multi-results and non-results are analyzed when the station height is given using DEM.
为了实现测绘成果资料的科学化管理，建立了西山矿区地形图管理系统，以2GB的数字化地形图创立了一个西山煤电集团公司规范的数据库。
This paper states the geographical map management system of Xishan coal mining area. Xishan coal electricity group company builds the company standard data-base for 2GB digital geographical map.
该系统的建立包括林相图、地形图的数字化与处理，小班属性与空间信息系统相联结。
The steps for the system establishment include digitizing the forest types map and topographic map and linking the attributes of forest types and spatial information.
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。
The topographic map scanning digitization is an important acquisition method for GIS data, which has become the mainstream of the map digitization.
从扫描数字化的基本原理及实施过程出发，分析了基于大比例尺地形图的扫描数字化的误差来源，着重讨论了影响扫描数字化数据结果精度的主要原因及采取的措施。
By analysing error resulting from the process of terrain map by digital scanning, we studied the precision problem in this process and made this process much more reliable.
从扫描数字化的基本原理及实施过程出发，分析了基于大比例尺地形图的扫描数字化的误差来源，着重讨论了影响扫描数字化数据结果精度的主要原因及采取的措施。
By analysing error resulting from the process of terrain map by digital scanning, we studied the precision problem in this process and made this process much more reliable.
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