Expeditious Modelling of Virtual Urban Environments with Geospatial L-systems

Coelho, A.; Bessa, M.; Sousa, A. Augusto; Ferreira, F. Nunes

Expeditious Modelling of Virtual Urban Environments with Geospatial L-systems

Date

2007

Authors

Coelho, A.
Bessa, M.
Sousa, A. Augusto
Ferreira, F. Nunes

Publisher

The Eurographics Association and Blackwell Publishing Ltd

Abstract

L-systems have been used in Computer Graphics, namely for modelling plants, as well as in a few experiments to model urban environments. However, the lack of geospatial awareness is a limitation and in spite of some developments like open L-systems, that introduced the ability to communicate with the environment, there was a need for more flexibility. This paper presents Geospatial L-systems, a new extension of L-systems that incorporates geospatial awareness, and shows an application in the area of expeditious modelling of urban environments. A modelling system, named XL3D, generates virtual urban environments automatically from a XML based document that contains a modelling specification and accesses data sources in an interoperable way. The integration of geospatial L-systems in this modelling system has increased the potential for automation and the potential to generate virtual urban environments with a higher level of detail and visual fidelity, with a lower level of complexity of the modelling processes. These facts are shown in a case study where a virtual urban environment, taken from an area in the Porto downtown, is generated by this solution.

        @article{10.1111:j.1467-8659.2007.01032.x
,
journal = {Computer Graphics Forum},
title = {{Expeditious Modelling of Virtual Urban Environments with Geospatial L-systems
}},
author = {Coelho, A. and 
Bessa, M. and 
Sousa, A. Augusto and 
Ferreira, F. Nunes
},
year = {2007
},
publisher = {The Eurographics Association and Blackwell Publishing Ltd
},
ISSN = {1467-8659
},
DOI = {10.1111/j.1467-8659.2007.01032.x
}
}