Expeditious Modelling of Virtual Urban Environments with Geospatial L-systems

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Date
2007
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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.
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@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
} }
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