本文主要研究了地图数字化数据的质量控制理论与方法。
This dissertation presents some quality control theory and methods on the data of digitalized map.
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.
目前地理信息系统，获取空间据数据的技术是采用地图数字化，从而增加了大量的重复工作。
The technology of acquiring space information data is introducing the map digitisation at present, so that large quantities of works repeated are increased.
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。
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.
位置误差主要来源于直接测量的误差、地图数字化的误差遥感数据的误差、数据转换误差、数据输入与存储误差。
The data of GIS include space data and property data. Position errors are mainly from errors of direct measurement, digitalization of map, data input and store.
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。
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.
地图模式识别是目前制图自动化的一个重点研究方向，利用计算机从扫描地形图上识别和提取地图信息为地图数字化开辟了新的途径。
Map pattern recognition is an important research direction in mapping automation now. Recognizing map information automatically from scanning map by computer carves out a new way for map digital.
从嘉定区土地利用多源时空数据的形成过程分析出发，重点对地图数字化与属性数据的逻辑一致性、遥感数据的精度评价进行了探讨；
The resluts of the experiments in the classification of land use remote sensing image in Jiading illustrate that the optimization algorithm has higher precise and better effectiveness.
从嘉定区土地利用多源时空数据的形成过程分析出发，重点对地图数字化与属性数据的逻辑一致性、遥感数据的精度评价进行了探讨；
The resluts of the experiments in the classification of land use remote sensing image in Jiading illustrate that the optimization algorithm has higher precise and better effectiveness.
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