摘要
本文介绍了地理信息系统SG-DB3中子软件数字高程模型(DEM)建立及三维显示软件的设计,提出了一种基于普通微机和数字化仪数字化地形图高程要素并利用最大坡度线法建立DEM的简单高效的方法,并对所编制的程序的精度和效率进行了分析。最后,介绍了三维模型显示中立体透视图和晕渲图软件的设计方法。
In this paper the author introduces sub-software design for Digital Elevation Model (DEM) generation and three dimentional displaying in Geographical Information System SG-DB3, A simple method with high efficiency for generating DEM from digitized topographic maps by using maximum gradient interpolation method are proposed in condition of general micro-computer and digitizer The precision and efficiency of the program are tested. Finally, the author introduces the method of software design, for three dimemtional model displaying about surface map and hillshading map.
出处
《武测科技》
北大核心
1991年第2期45-52,共8页
