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Robust Building Facade Reconstruction from Spaceborne Tomosar Points

Shahzad, Muhammad and Zhu, Xiao Xiang (2013) Robust Building Facade Reconstruction from Spaceborne Tomosar Points. In: ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume II-3/W3, 2013, II-3/W, pp. 85-90. Copernicus GmbH (Copernicus Publications) on behalf of the ISPRS. CMRT13 – City Models, Roads and Traffic 2013, 12-13 Nov 2013, Antalya, Turkey. ISSN 2194-9042.

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Official URL: http://www.isprs-ann-photogramm-remote-sens-spatial-inf-sci.net/II-3-W3/85/2013/isprsannals-II-3-W3-85-2013.pdf

Abstract

With improved sensor resolution and advanced multi-pass interferometric techniques such as SAR tomographic inversion (TomoSAR), it is now possible to reconstruct both shape and motion of urban infrastructures. These sophisticated techniques not only opens up new possibilities to monitor and visualize the dynamics of urban infrastructure in very high level of details but also allows us to take a step further towards generation of 4D (space-time) or even higher dimensional dynamic city models that can potentially incorporate temporal (motion) behaviour along with the 3D information. Motivated by these chances, this paper presents a post processing approach that systematically allows automatic reconstruction of building façades from 4D point cloud generated from tomographic SAR processing and put the particular focus on robust reconstruction of large areas. The approach is modular and consists of extracting facade points via point density estimation procedure based on directional window approach. Segmentation of facades into individual segments is then carried out using an unsupervised clustering procedure combining both the density-based clustering and the mean-shift algorithm. Subsequently, points of individual facade segments are identified as belonging to flat or curved surface and general 1st and 2nd order polynomials are used to model the facade geometry. Finally, intersection points of the adjacent façades describing the vertex points are determined to complete the reconstruction process. The proposed approach is illustrated and validated by examples using TomoSAR point clouds over the city of Las Vegas generated from a stack of TerraSARX high resolution spotlight images.

Item URL in elib:https://elib.dlr.de/86149/
Document Type:Conference or Workshop Item (Speech)
Title:Robust Building Facade Reconstruction from Spaceborne Tomosar Points
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Shahzad, Muhammadmuhammad.shahzad (at) bv.tum.deUNSPECIFIED
Zhu, Xiao Xiangxiao.zhu (at) dlr.deUNSPECIFIED
Date:2013
Journal or Publication Title:ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume II-3/W3, 2013
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:II-3/W
Page Range:pp. 85-90
Publisher:Copernicus GmbH (Copernicus Publications) on behalf of the ISPRS
Series Name:Commission III, WG III/4 and ICWG III/VII
ISSN:2194-9042
Status:Published
Keywords:SAR tomography, clustering, facade reconstruction, segmentation, TerraSAR-X
Event Title:CMRT13 – City Models, Roads and Traffic 2013
Event Location:Antalya, Turkey
Event Type:international Conference
Event Dates:12-13 Nov 2013
Organizer:ISPRS WG III/4 '3D Scene Analysis' & ISPRS WG III/VII 'Pattern Analysis in Remote Sensing'
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:06 Dec 2013 11:17
Last Modified:31 Jul 2019 19:43

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