Hybrid 3D Rendering of Large Map Data for Crisis Management

ISPRS International Journal of Geo-Information

David Tully¹  Abdennour El Rhalibi²  Christopher Carter²  Sud Sudirman²  Christoph Aubrecht² 

[1] Department of Computing, Liverpool John Moores University, Liverpool L3 3AF, UK;

关键词: crisis management;    geovisualisation;    open data and volunteered geographical information (VGI);    games technology;    LiDAR;    open street map;    ordnance survey;    hybrid map generation;    map error reduction;    decision support system;   

DOI  :  10.3390/ijgi4031033

来源: mdpi

【 摘 要 】

In this paper we investigate the use of games technologies for the research and the development of 3D representations of real environments captured from GIS information and open source map data. Challenges involved in this area concern the large data-sets to be dealt with. Some existing map data include errors and are not complete, which makes the generation of realistic and accurate 3D environments problematic. The domain of application of our work is crisis management which requires very accurate GIS or map information. We believe the use of creating a 3D virtual environment using real map data whilst correcting and completing the missing data, improves the quality and performance of crisis management decision support system to provide a more natural and intuitive interface for crisis managers. Consequently, we present a case study into issues related to combining multiple large datasets to create an accurate representation of a novel, multi-layered, hybrid real-world maps. The hybrid map generation combines LiDAR, Ordnance Survey, and OpenStreetMap data to generate 3D cities spanning 1 km². Evaluation of initial visualised scenes is presented. Initial tests consist of a 1 km² landscape map containing up to 16 million vertices’ and run at an optimal 51.66 frames per-second.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.