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Research and Realization of 3D Terrain Visualization System

Author: WangZuo
Tutor: ZhangQunHui
School: Xi'an University of Science and Technology
Course: Applied Computer Technology
Keywords: Three-dimensional visualization Stereo Vision Terrain modeling TIN Delaunay triangulation Digital Terrian Model (DTM) DEM
CLC: P208
Type: Master's thesis
Year: 2005
Downloads: 733
Quote: 6
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Abstract


3D terrain visualization in recent years, computer graphics and geographic information systems combine to produce a new hotspot. Using GIS geological data collected through terrain modeling , texture mapping, lighting model , the projector mode selection and terrain roaming , enabling highly realistic 3D terrain dynamic display , now the technology has been in the military simulation , 3D games and visual simulation , and many other industrial fields has been widely used. In this paper, the physiological mechanism of stereoscopic vision starting to find a good produce stereoscopic parallax and stereoscopic projection algorithm, based on stereo vision to landscape rendering technology to achieve a single state in the stereoscopic display three-dimensional terrain images . In this paper, based on triangle mesh terrain modeling the basic theory and methods, including regular triangulation of data generation and triangulated irregular network TIN generation algorithm, summed up the previous work done in these areas , this paper presents a kind of optimized triangular mesh generation algorithm , the experimental results show that the algorithm not only improves the efficiency of terrain modeling , and the resulting triangle mesh models , compared with the previous algorithm accuracy has greatly improved. In three-dimensional terrain modeling algorithms and visualization algorithm as the main theory, OpenGL and VC 6.0 as a tool to build a three-dimensional terrain visualization system to achieve a three-dimensional terrain modeling and dynamic display of fast , through roaming capabilities and a variety of modes projection display that allows users to multi-angle multi-dimensional understanding of the topography .

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CLC: > Astronomy,Earth Sciences > Surveying and Mapping > General issues > Mapping database and information system
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