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Extraction et reconstruction des bâtiments en milieu urbain à partir d'images satellitaires optiques et radar à haute résolution.

Abstract : These works take place in the framework of building extraction and 3D building reconstruction in urban and semi-urban areas, from high-resolution optical and SAR satellite images. The main objective is to develop a complete semi-automatic processing chain, able to provide a simple and reliable reconstruction of parallelepipedic buildings on the scene, from a specific configuration of the input data, composed of an optical image and a SAR image, and from a digital terrain model. This restricted configuration, particularly delicate to deal with but likely to happen in operational conditions, has been until now studied only in a few works. Proposing a specific approach to manage such a scenario seems thus very interesting for a lot of applications in remote sensing. We aim to fully benefit from the data fusion context, by exploiting, in an appropriate way, the optical-SAR complementarities for the reconstruction of the scene, through the combination of planimetric and altimetric information. The proposed chain is decomposed into four steps: potential building detection in optical monoscopy; projection and registration of the potential optical footprints into SAR data; height estimation and building validation on the SAR image; qualification of the reconstructed buildings. The whole chain is applied on studied scenes issued from a couple of Quickbird and TerraSAR-X real data. The obtained results are qualitatively and quantitatively analyzed. A globally satisfying reconstruction of the buildings is achieved.
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Contributor : Hélène Sportouche <>
Submitted on : Thursday, February 10, 2011 - 1:41:16 PM
Last modification on : Friday, July 31, 2020 - 10:44:07 AM
Long-term archiving on: : Wednesday, May 11, 2011 - 2:59:13 AM

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Hélène Sportouche. Extraction et reconstruction des bâtiments en milieu urbain à partir d'images satellitaires optiques et radar à haute résolution.. Traitement du signal et de l'image [eess.SP]. Télécom ParisTech, 2010. Français. ⟨pastel-00564891⟩

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