Open AccessBrief Discussion of Surveying Technology of Three-dimensional Digital Topographic Map
Author(s) -
Xiao Zhang,
Yan Wang,
Huacan He
Publication year - 2015
Publication title -
electronics science technology application
Language(s) - English
Resource type - Journals
eISSN - 2251-2608
pISSN - 2424-8460
DOI - 10.18686/esta.v2i1.6
Subject(s) - object (grammar) , digital elevation model , elevation (ballistics) , topographic map (neuroanatomy) , space (punctuation) , computer science , matching (statistics) , expression (computer science) , geography , digital mapping , computer vision , computer graphics (images) , artificial intelligence , remote sensing , mathematics , geometry , psychology , statistics , posterior parietal cortex , cognitive psychology , programming language , operating system
3D digital Topographic drawing adopts 3D profile technology and demonstrates geographic space phenomenon to users, reflects the space features of geographic entity in an integrated and accurate manner and thus realizes even more complete, accurate and straight-forward expression of the objective world. It can not only express the plane relationship between space objects, but also accurately describe and express the ground elevation and geometric object height which upgrade the space expression ability and measuring level of digital map and enhance the space acknowledge ability and analytic ability of map. This article aims to elaborate on 3D digital topographic drawing in three aspects: surveying, mapping and application; mainly introduce the mapping methods of 3D topography and geometric object, integrated matching technologies of topographic model and geometric object model and application of 3D digital topographic drawing. It is expected to have a positive promotion role in the development of 3D GIS.