摘要
目前,地图的扫描数字化已成为GIS领域中获取数据信息的主要手段之一。地图变形中包括扫描变形和图纸变形,但图纸变形相对较小,扫描变形是主要的。产生扫描变形的因素很多。本文就这一问题基于MAPGIS对地形图的不同变形纠正方法做了系统的比较,阐述了传统纠正法和分块纠正法的原理,为在满足地形图要求精度的情况下使用不同的校正模型作了铺垫,从而达到确保数字地图质量的目的。
Currently,the digitalization of map by scanning has become one of the main means which are used to obtain a data information in the GIS fields.Map transformation contains scanning transformation and changes of map itself,comparing with map transformation,scanning transformation is quite important during we use.There are lots of factors which lead to map changes.This paper will make a system comparison with different transformation rectify methods based on MAPGIS,elaborate the main principles of traditional rectify method and zonal method.It is quite essential to meet the special need of different accuracy using the correct rectify model,to greatly improve the quality of map.
出处
《测绘与空间地理信息》
2009年第6期162-164,168,共4页
Geomatics & Spatial Information Technology
关键词
DOM图
影像变形
配准
误差校正
分块
Digital Orthophoto Map
image distorting
image registration
error correction
zonation
