Effective visibility analysis method in virtual geographic environment

Yi Li; Qing Zhu; Jianhua Gong

doi:10.1117/12.812652

3 November 2008 Effective visibility analysis method in virtual geographic environment

Yi Li, Qing Zhu, Jianhua Gong

Proceedings Volume 7143, Geoinformatics 2008 and Joint Conference on GIS and Built Environment: Geo-Simulation and Virtual GIS Environments; 71433B (2008) https://doi.org/10.1117/12.812652
Event: Geoinformatics 2008 and Joint Conference on GIS and Built Environment: Geo-Simulation and Virtual GIS Environments, 2008, Guangzhou, China

Abstract

Visibility analysis in virtual geographic environment has broad applications in many aspects in social life. But in practical use it is urged to improve the efficiency and accuracy, as well as to consider human vision restriction. The paper firstly introduces a high-efficient 3D data modeling method, which generates and organizes 3D data model using R-tree and LOD techniques. Then a new visibility algorithm which can realize real-time viewshed calculation considering the shelter of DEM and 3D building models and some restrictions of human eye to the viewshed generation. Finally an experiment is conducted to prove the visibility analysis calculation quickly and accurately which can meet the demand of digital city applications.

Citation Download Citation

Yi Li, Qing Zhu, and Jianhua Gong "Effective visibility analysis method in virtual geographic environment", Proc. SPIE 7143, Geoinformatics 2008 and Joint Conference on GIS and Built Environment: Geo-Simulation and Virtual GIS Environments, 71433B (3 November 2008); https://doi.org/10.1117/12.812652

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KEYWORDS

3D modeling

Data modeling

Visibility

Virtual reality

Detection and tracking algorithms

Eye

Geographic information systems

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