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Learned Atoms from Multispectral Satellite Image Time Series

Radoi, Anamaria and Datcu, Mihai (2014) Learned Atoms from Multispectral Satellite Image Time Series. In: Proceedings of ESA-EUSC-JRC 2014 - 9th Conference on Image Information Mining Conference: The Sentinels Era, pp. 71-75. EU. ESA-EUSC-JRC 2014, 05-07 March 2014, Bucharest, Romania. DOI: 10.2788/25852 ISBN 978-92-79-36160-9 ISSN 1831-9424

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Official URL: http://bookshop.europa.eu/en/proceedings-of-9th-esa-eusc-jrc-conference-on-image-information-mining-pbLBNA26548/?CatalogCategoryID=9.EKABstN84AAAEjuJAY4e5L


With the on going development of the satellite image time series (SITS), information retrieval in earth monitoring and automatic recognition of changes in time series have become important and challenging tasks. The purpose of the present paper is to determine dictionaries of atoms directly learned from the time series images such that a sparse representation of the images is maintained. The filterbanks learned using gradient descent techniques depend on the frequency band at which the satellite’s sensor captures the scene, i.e., for the visible part of the spectra, the learned filters are close to mean filters over small subregions, whilst, for the infrared part of the spectra, the filters are similar to gradient ones. Furthermore, we aim to express the time changes in SITS in a compact form provided by the newly found sparse representations of the images. The experiments are carried on 4 Landsat images at 30 meters spatial resolution, covering a surface of � 59×51 km2 over the city of Bucharest, Romania, and containing information both from the visible and from the infrared domains.

Item URL in elib:https://elib.dlr.de/94219/
Document Type:Conference or Workshop Item (Speech)
Title:Learned Atoms from Multispectral Satellite Image Time Series
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Radoi, AnamariaUniversity Politehnica of Bucharest, RomaniaUNSPECIFIED
Datcu, Mihaimihai.datcu (at) dlr.deUNSPECIFIED
Journal or Publication Title:Proceedings of ESA-EUSC-JRC 2014 - 9th Conference on Image Information Mining Conference: The Sentinels Era
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.2788/25852
Page Range:pp. 71-75
Soille, PierreJoint Research Centre, European Commission, Italy
Marchetti, Pier GiorgioEuropean Space Agency, Italy
Iapaolo, MicheleEuropean Space Agency, Italy
Colaiacomo, LucioEuropean Union Satellite Centre, Spain
Datcu, Mihaimihai.datcu@dlr.de
Keywords:satellite image time series, learned dictionary, automatic recognition, data mining, information retrieval, feature extraction
Event Title:ESA-EUSC-JRC 2014
Event Location:Bucharest, Romania
Event Type:international Conference
Event Dates:05-07 March 2014
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 > Photogrammetry and Image Analysis
Deposited On:07 Jan 2015 15:51
Last Modified:07 Jan 2015 15:51

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