An applicaton study of 3D GIS for visualization and modeling

Pao Yue-kong Library Electronic Theses Database

An applicaton study of 3D GIS for visualization and modeling

 

Author: Yu, Qian
Title: An applicaton study of 3D GIS for visualization and modeling
Degree: M.Sc.
Year: 2014
Subject: Geographic information systems.
Three-dimensional display systems.
Hong Kong Polytechnic University -- Dissertations
Department: Faculty of Construction and Environment
Pages: viii, 76 leaves : color illustrations ; 30 cm
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b2759136
URI: http://theses.lib.polyu.edu.hk/handle/200/7583
Abstract: With the technology advancement, two dimensional (2D) GIS no longer meet our needs due to its limitations. As we live in a three dimensional (3D) world and therefore information should be best displayed in 3D. In this study, we introduced the background information about the topic, stated our objectives and outline the procedures of our work. Besides, we gave a literature review on 3D GIS, 3D web GIS and 3D data representation. Based on the former study, we divided this dissertation into two parts. One was to realize a web application of 3D GIS visualization. It developed a virtual campus application taking the Hong Kong Polytechnic University as an example. This application would provide three main functions which include 3D visualization, information inquiry and spatial analysis, by Google Earth API. The second part was 3D data modeling based on ArcGIS. ArcGIS provided the geometry type named "Multipatch" representing 3D objects. Based on multipatch, there are two ways for modeling. One was a quick and simple approach to model regular objects and the other was modeling for more complex objects. Besides, several functions were offered to realize the 3D spatial analysis dependent on spatial relationship. Finally, we summarizes the previous work and gave further developments of this dissertation.

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