Large area impervious surface mapping on the basis of optical and SAR data
Leinenkugel, Patrick and Esch, Thomas and Künzer, Claudia and Gebhardt, Steffen (2010) Large area impervious surface mapping on the basis of optical and SAR data. In: Proceedings of the 31st Asian Remote Sensing Conference, . 31st Asian Remote Sensing Conference, 01.-05. Nov. 2010, Hanoi, Vietnam.
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ABSTRACT: The aim of this paper is to present an approach based on both optical and SAR data, in order to quantify urban impervious surface (IS) as a continuous variable on regional scales independent of other sources of geoinformation. On the basis of single-polarized TerraSAR-X data settlement areas were identified by a semi-automated, object-oriented classification approach. The settlement footprints then served as the reference area for the impervious surface estimation, which is based on a Support Vector Regression model. The method developed was applied to SPOT 5 data from 2005 and 2009, covering almost the whole area of Can Tho province in the Mekong Delta, Vietnam. In addition, a change detection analysis was carried out and average IS statistics on commune level were computed. Settlement areas were correctly identified with overall accuracies between 89% and 94%, while the comparison of modelled to the training IS values gave an absolute mean error below 15%. The results demonstrate that the approach is suitable for large area impervious surface mapping thereby focusing exclusively on settlement areas.
|Document Type:||Conference or Workshop Item (Speech, Paper)|
|Title:||Large area impervious surface mapping on the basis of optical and SAR data|
|Journal or Publication Title:||Proceedings of the 31st Asian Remote Sensing Conference|
|In ISI Web of Science:||No|
|Keywords:||Impervious surface, Support Vector Regression, SPOT 5, TerraSAR-X|
|Event Title:||31st Asian Remote Sensing Conference|
|Event Location:||Hanoi, Vietnam|
|Event Type:||international Conference|
|Event Dates:||01.-05. Nov. 2010|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W EO - Erdbeobachtung|
|DLR - Research area:||Space|
|DLR - Program:||W - no assignement|
|DLR - Research theme (Project):||W -- no assignement (old)|
|Institutes and Institutions:||German Remote Sensing Data Center > Land Surface|
|Deposited By:||Juliane Huth|
|Deposited On:||24 Nov 2010 20:43|
|Last Modified:||24 Nov 2010 20:43|
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