浅谈数字城市建设大比例尺彩色正射影像图制作方法

Digital city construction program's large-scale color orthophoto map-making method

数字城市项目中的大比例尺正射影像图具有反映地理信息特点,直观表现出地形、地貌、以及地物的特征,在数字城市、测绘地理信息、城市规划、国土资源调查等领域提供科学的技术依据,更是建设数字城市项目的基础数据。通过笔者参加的数字黄山及数字马鞍山大比例尺正射影像图的生产经验,总结了利用MapMatrix、Pixel Grid-AEO、Erdas、PhotoshopCS,通过人工采集特征线生成DEM或者直接生成DEM后修测的方法制作DOM,摸索出了一些制作过程中遇到的实际问题的解决办法。

Digital city construction program＇ s large-scale color orthophoto map reflects geographic information, visual- ly displays landform and surface features, provides scientific technical data in the areas of digital city, mapping geo- graphic information, city planning and land and resources survey, and moreover represents fundamental data for digital city construction program. Based on experience of participation in production of Digital Huangshan and Digital Maan- shan large-scale orthophoto maps, this paper summarized use of MapMatrix, PixelGrid-AEO, Erdas and PhotoshopCS to generate DEM by artificial acquisition of characteristic lines or directly generate DEM to make DOM by revision.