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Automatic SAR-based flood detection using hierarchical tile-ranking thresholding and fuzzy logic

Cao, Wenxi and Martinis, Sandro and Plank, Simon (2017) Automatic SAR-based flood detection using hierarchical tile-ranking thresholding and fuzzy logic. In: 2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2017), 5697 -5700. IGARSS 2017, Fort Worth, Texas, USA. DOI: DOI: 10.1109/IGARSS.2017.8128301

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Official URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=8128301

Abstract

Given the proven effectiveness of the split-based approach (SBA) for SAR image analysis in literature, the objective of this article focuses on designing a more efficient and robust version of the SBA for applications in the context of rapid flood mapping. A hierarchical tile-ranking SBA is proposed in this paper which is combined with a previous multilevel tile contrast analysis to significantly reduce the amount of data for the estimation of global threshold. A separability test is further applied to reject badly located tiles. The classification is optimized by merging pixel backscatter values, cluster size and local slope into a fuzzy-logic based post-classification framework. The proposed method was tested on Sentinel-1 SAR data acquired over Lake Liambezi in the Caprivi Strip of Namibia and validated with respect to a Landsat-8 scene. Compared to tiles selected by the conventional SBA the proposed method automatically select better relevant ones and the classification is more robust with less misclassification of water-lookalikes.

Item URL in elib:https://elib.dlr.de/113502/
Document Type:Conference or Workshop Item (Speech)
Title:Automatic SAR-based flood detection using hierarchical tile-ranking thresholding and fuzzy logic
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Cao, WenxiWenxi.Cao (at) dlr.dehttps://orcid.org/0000-0001-9567-3053
Martinis, Sandrosandro.martinis (at) dlr.deUNSPECIFIED
Plank, Simonsimon.plank (at) dlr.deUNSPECIFIED
Date:28 July 2017
Journal or Publication Title:2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2017)
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :DOI: 10.1109/IGARSS.2017.8128301
Page Range:5697 -5700
Status:Published
Keywords:SAR, flood mapping, hierarchical tile-ranking thresholding
Event Title:IGARSS 2017
Event Location:Fort Worth, Texas, USA
Event Type:international Conference
Organizer:23.-28. Jul. 2017
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 - Remote sensing and geoscience
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Geo Risks and Civil Security
Deposited By: Plank, Simon Manuel
Deposited On:23 Oct 2017 13:47
Last Modified:15 Mar 2018 13:52

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