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Monitoring urbanization in mega cities from space

Taubenböck, Hannes and Esch, Thomas and Felbier, Andreas and Wiesner, Michael and Roth, Achim and Dech, Stefan (2012) Monitoring urbanization in mega cities from space. Remote Sensing of Environment, 117, pp. 162-176. Elsevier Inc. .

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Mega cities, the largest category of urban agglomerations, attract considerable attention because of their population size, economic, socio-cultural, environmental and political influence and geographical complexity. Until 1975 there were just three mega cities in the world: New York, Tokyo and Mexico City — today there are 27 cities having more than the defined 10 million inhabitants. This paper presents a straight forward, application- oriented approach using multi-temporal remotely sensed data to systematically monitor the spatiotemporal dynamics of the world's urban giants. Object-oriented and pixel-based classification image analysis techniques are applied to Landsat as well as to TerraSAR-X data in order to define urbanized areas of the mega cities at different points of time. Subsequently post-classification change detection is performed on urban footprint level. With time intervals of about 10 years almost 40 years of urbanization are monitored, showing different dimensions, dynamics and patterns across the analyzed cities. The generated urban footprint products show accuracies consistently higher than 80%, allowing for further applications in fields such as urban planning, risk management, or population assessment.

Document Type:Article
Title:Monitoring urbanization in mega cities from space
AuthorsInstitution or Email of Authors
Taubenböck, Hanneshannes.taubenboeck@dlr.de
Esch, ThomasThomas.Esch@dlr.de
Felbier, Andreasandreas.felbier@dlr.de
Wiesner, MichaelUniversität Würzburg
Roth, AchimAchim.Roth@dlr.de
Dech, Stefanstefan.dech@dlr.de
Date:February 2012
Journal or Publication Title:Remote Sensing of Environment
Refereed publication:Yes
In Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 162-176
Publisher:Elsevier Inc.
Keywords:Urbanization, Mega cities, Landsat, TerraSAR-X, Change detection, Image analysis
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 Prozesse der Landoberfläche (old)
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Land Surface
Deposited By: Dr. Hannes Taubenböck
Deposited On:22 Feb 2012 12:11
Last Modified:18 Apr 2013 13:57

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