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Research on Methods of TIN Modeling in Terrain 3D Visualization

Author: LiGang
Tutor: ShiJinFeng；ZhangJun
School: Liaoning Technical University
Course: Geodesy and Survey Engineering
Keywords: terrain isualization level-of-detail progressive meshes TIN data integration
CLC: P208
Type: Master's thesis
Year: 2004
Downloads: 322
Quote: 3
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Abstract


Visualization of terrain information is playing a key role in many applications such as flight simulation，3D geographic information system， etc．This paper introduces a LoD control：View-Dependent Progressive Meshes．This method uses quadric error metrics to simplify surface， defines a continuous sequence of meshes，can construct an pproximations of any complexity efficiently,supports selective refinement according to view parameters．As the application of terrain visualization advance，This paper introduce a strategy for integrating 2D data and DEM．This method “sews like a sewing-machine’’the 2D data into DEM and use data model to manage 2D data and implement adding vector data on the ten’ain，querying information，layers management．

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