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Reconstruction of Building Footprints using Spaceborne TOMOSAR Point Clouds

Shahzad, Muhammad and Zhu, Xiao Xiang (2015) Reconstruction of Building Footprints using Spaceborne TOMOSAR Point Clouds. In: Proceedings of CMRT15 - City Models, Roads and Traffic 2015, pp. 385-392. CMRT 2015, 01-02- Oct 2015, La Motte, France.

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Official URL: http://www.pf.bgu.tum.de/isprs/cmrt15/


This paper presents an approach that automatically (but parametrically) reconstructs 2-D/3-D building footprints using 3-D synthetic aperture radar (SAR) tomography (TomoSAR) point clouds. These point clouds are generated by processing SAR image stacks via SAR tomographic inversion. The proposed approach reconstructs the building outline by exploiting both the roof and façade points. Initial building footprints are derived by applying the alpha shapes method on pre-segmented point clusters of individual buildings. A recursive angular deviation based refinement is then carried out to obtain refined/smoothed 2-D polygonal boundaries. A robust fusion framework then fuses the information pertaining to building façades to the smoothed polygons. Afterwards, a rectilinear building identification procedure is adopted and constraints are added to yield geometrically correct and visually aesthetic building shapes. The proposed approach is illustrated and validated using TomoSAR point clouds generated from a stack of TerraSAR-X high-resolution spotlight images from ascending orbit covering approximately 1.5 km2 area in the city of Berlin, Germany.

Item URL in elib:https://elib.dlr.de/96302/
Document Type:Conference or Workshop Item (Speech)
Title:Reconstruction of Building Footprints using Spaceborne TOMOSAR Point Clouds
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Shahzad, Muhammadmuhammad.shahzad (at) bv.tum.deUNSPECIFIED
Journal or Publication Title:Proceedings of CMRT15 - City Models, Roads and Traffic 2015
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 385-392
Keywords:SAR tomography, building footprint reconstruction, spaceborne, point cloud
Event Title:CMRT 2015
Event Location:La Motte, France
Event Type:international Conference, Workshop
Event Dates:01-02- Oct 2015
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Vorhaben hochauflösende Fernerkundungsverfahren (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > SAR Signal Processing
Deposited By: Shahzad, Muhammad
Deposited On:26 May 2015 12:40
Last Modified:31 Jul 2019 19:53

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