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A Bag-of-Meaningful-Words Integrating Scattering and Structure Information for PolSAR Image Classification

Tanase, Radu and Schwarz, Gottfried and Datcu, Mihai (2018) A Bag-of-Meaningful-Words Integrating Scattering and Structure Information for PolSAR Image Classification. In: Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR, pp. 1-4. EUSAR 2018, 4.-7. June 2018, Aachen, Germany. ISBN 978-3-8007-4636-1

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Official URL: https://ieeexplore.ieee.org/document/8438033

Abstract

We propose a feature descriptor that integrates both the physical scattering properties of local targets and the contextual structure of HR PolSAR image patches. Firstly, the physical scattering properties are integrated by learning a meaningful scattering vocabulary, composed of the physically optimized entropy\anisotropy\alpha (H\A\alpha) classification labels, computed on small windows (e.g., of 5 x 5 pixels). Then, in a Bag-of-Meaningful-Words (BoMW) fashion, we compute the histograms of these labels over the learned vocabulary on larger windows (e.g., of 64 x 64 pixels), thus capturing the structure of image patches. We validated the quality of the obtained feature descriptors by computing K-Nearest-Neighbor (KNN) classifications of two HR, L-band, airborne polarimetric SAR images of the F-SAR and UAVSAR sensors, showing significant classification improvements compared with other state-of-the-art methods.

Item URL in elib:https://elib.dlr.de/123440/
Document Type:Conference or Workshop Item (Speech)
Title:A Bag-of-Meaningful-Words Integrating Scattering and Structure Information for PolSAR Image Classification
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Tanase, RaduUniversity Politehnica of Bucharest, Bucharest, RomaniaUNSPECIFIED
Schwarz, GottfriedGottfried.Schwarz (at) dlr.deUNSPECIFIED
Datcu, MihaiMihai.Datcu (at) dlr.deUNSPECIFIED
Date:June 2018
Journal or Publication Title:Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Page Range:pp. 1-4
ISBN:978-3-8007-4636-1
Status:Published
Keywords:HR PolSAR, Bag-of-Meaningful-Words, KNN
Event Title:EUSAR 2018
Event Location:Aachen, Germany
Event Type:international Conference
Event Dates:4.-7. June 2018
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 > EO Data Science
Deposited By: Dumitru, Corneliu Octavian
Deposited On:28 Nov 2018 15:20
Last Modified:31 Jul 2019 20:21

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