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Façade structure reconstruction using spaceborne TomoSAR point clouds

Shahzad, Muhammad and Zhu, Xiao Xiang and Bamler, Richard (2012) Façade structure reconstruction using spaceborne TomoSAR point clouds. IGARSS'12, 22-27 2012, Munich, Germany.

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Abstract

Very high resolution SAR tomography using multiple data stacks from different viewing angles enables us for the first time to generate 4D point clouds of the illuminated area from space with a point density comparable to LiDAR. They can be potentially used for façade reconstruction and monitoring in urban environment. In this paper, we propose an approach for façade detection and reconstruction from such point clouds. Firstly, the façade region is extracted by thresholding the point density on the ground plane. The extracted façades points are then clustered into segments corresponding to individual façades by means of slope analysis. Surface (flat or curved) model parameters of the segmented building façades are further estimated. Finally, the elevation estimates of each raw TomoSAR point is refined by using its more accurate azimuth and range coordinates, and the corresponding reconstructed surface model of the façade. The proposed approach is illustrated and validated by examples using TomoSAR point clouds generated from a stack of 25 TerraSAR-X high spotlight images

Document Type:Conference or Workshop Item (UNSPECIFIED)
Title:Façade structure reconstruction using spaceborne TomoSAR point clouds
Authors:
AuthorsInstitution or Email of Authors
Shahzad, Muhammadmuhammad.shahzad@bv.tum.de
Zhu, Xiao Xiangxiao.zhu@dlr.de
Bamler, Richardrichard.bamler@dlr.de
Date:2012
Refereed publication:No
In ISI Web of Science:No
Page Range:pp. 467-470
Status:Published
Keywords:SAR tomography (TomoSAR), TerraSAR-X, point clouds, façade reconstruction
Event Title:IGARSS'12
Event Location:Munich, Germany
Event Type:international Conference
Event Dates:22-27 2012
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben hochauflösende Fernerkundungsverfahren
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > SAR Signal Processing
Deposited By: Muhammad Shahzad
Deposited On:13 Jul 2012 07:13
Last Modified:21 Mar 2014 09:49

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