Constructing 3‐DGIS

Abstract

This entry provides an elucidated overview of 3‐D GIS data structure and 3‐D GIS data acquisition, while introducing the latest technologies and several 3‐D city models. Many attempts have been made to convert 2‐D maps into 3‐D maps. Thanks to the shift toward GIS technology and the development of methods for acquiring new 3‐D data, detailed 3‐D city models can now be constructed. With the appearance of Google Earth and CityEngine, further enhancement of virtual geographical environments using 3‐D GIS can be anticipated.