Abdunaser Abduelmula and Maria Luisa M. Bastos and José A. Gonçalves
HighAccuracy Satellite Image Analysis and Rapid DSM Extraction for Urban Environment Evaluations (TripoliLibya)
661 - 666
2015
9
3
International Journal of Environmental and Ecological Engineering
https://publications.waset.org/pdf/10000607
https://publications.waset.org/vol/99
World Academy of Science, Engineering and Technology
Modelling of the earth&39;s surface and evaluation of
urban environment, with 3D models, is an important research topic.
New stereo capabilities of high resolution optical satellites images,
such as the tristereo mode of Pleiades, combined with new image
matching algorithms, are now available and can be applied in urban
area analysis. In addition, photogrammetry software packages gained
new, more efficient matching algorithms, such as SGM, as well as
improved filters to deal with shadow areas, can achieve more dense
and more precise results.
This paper describes a comparison between 3D data extracted
from tristereo and dual stereo satellite images, combined with pixel
based matching and Wallis filter. The aim was to improve the
accuracy of 3D models especially in urban areas, in order to assess if
satellite images are appropriate for a rapid evaluation of urban
environments.
The results showed that 3D models achieved by Pleiades tristereo
outperformed, both in terms of accuracy and detail, the result
obtained from a Geoeye pair. The assessment was made with
reference digital surface models derived from high resolution aerial
photography. This could mean that tristereo images can be
successfully used for the proposed urban change analyses.
Open Science Index 99, 2015