Land Cover Classification in SubArctic Regions Using Fully Polarimetric RADARSAT-2 Data.
The expansion of shrub vegetation in Arctic and sub-Arctic environments observed in the past decades can have significant effects on northern ecosystems. There is a need for efficient tools to monitor those changes, not only in terms of the spatial coverage of shrubs, but also their vertical growth....
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Online Access: | https://espace.inrs.ca/id/eprint/4688/ https://espace.inrs.ca/id/eprint/4688/1/P2966.pdf https://doi.org/10.3390/rs8090697 |
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ftinrsquebec:oai:espace.inrs.ca:4688 2023-05-15T14:43:53+02:00 Land Cover Classification in SubArctic Regions Using Fully Polarimetric RADARSAT-2 Data. Duguay, Yannick Bernier, Monique Lévesque, Esther Dominé, Florent 2016 application/pdf https://espace.inrs.ca/id/eprint/4688/ https://espace.inrs.ca/id/eprint/4688/1/P2966.pdf https://doi.org/10.3390/rs8090697 en eng https://espace.inrs.ca/id/eprint/4688/1/P2966.pdf Duguay, Yannick, Bernier, Monique, Lévesque, Esther et Dominé, Florent (2016). Land Cover Classification in SubArctic Regions Using Fully Polarimetric RADARSAT-2 Data. Remote Sensing , vol. 8 , nº 9. p. 697. DOI:10.3390/rs8090697 <https://doi.org/10.3390/rs8090697>. doi:10.3390/rs8090697 SAR polarimetry sub-Arctic classification support vector machine Article Évalué par les pairs 2016 ftinrsquebec https://doi.org/10.3390/rs8090697 2023-02-10T11:43:11Z The expansion of shrub vegetation in Arctic and sub-Arctic environments observed in the past decades can have significant effects on northern ecosystems. There is a need for efficient tools to monitor those changes, not only in terms of the spatial coverage of shrubs, but also their vertical growth. The objective of the current paper is to evaluate the performance of polarimetric C-band SAR datasets for land cover classification in sub-Arctic environments. A series of RADARSAT-2 quad-pol images were acquired between October 2011 and April 2012. The Support Vector Machine (SVM) classification scheme was used on three sets of features: the elements of the polarimetric coherency matrix [T] , the parameters extracted from a polarimetric decomposition based on the eigenvalues and eigenvectors of [T] and the parameters extracted from a model-based decomposition. Using a single image, the results show that the best classification accuracies ( ≈75% ) are obtained using the [T] matrix with the October images. When adding a second image to the feature set, either from two different dates or two incidence angles, the classification accuracy is improved and reaches 90.1% with two images from October 2011 and April 2012 at 27∘ incidence. The results show that C-band polarimetric SAR imagery is an adequate tool to map shrub vegetation in sub-Arctic environments. Article in Journal/Newspaper Arctic Subarctic Institut national de la recherche scientifique, Québec: Espace INRS Arctic Remote Sensing 8 9 697 |
institution |
Open Polar |
collection |
Institut national de la recherche scientifique, Québec: Espace INRS |
op_collection_id |
ftinrsquebec |
language |
English |
topic |
SAR polarimetry sub-Arctic classification support vector machine |
spellingShingle |
SAR polarimetry sub-Arctic classification support vector machine Duguay, Yannick Bernier, Monique Lévesque, Esther Dominé, Florent Land Cover Classification in SubArctic Regions Using Fully Polarimetric RADARSAT-2 Data. |
topic_facet |
SAR polarimetry sub-Arctic classification support vector machine |
description |
The expansion of shrub vegetation in Arctic and sub-Arctic environments observed in the past decades can have significant effects on northern ecosystems. There is a need for efficient tools to monitor those changes, not only in terms of the spatial coverage of shrubs, but also their vertical growth. The objective of the current paper is to evaluate the performance of polarimetric C-band SAR datasets for land cover classification in sub-Arctic environments. A series of RADARSAT-2 quad-pol images were acquired between October 2011 and April 2012. The Support Vector Machine (SVM) classification scheme was used on three sets of features: the elements of the polarimetric coherency matrix [T] , the parameters extracted from a polarimetric decomposition based on the eigenvalues and eigenvectors of [T] and the parameters extracted from a model-based decomposition. Using a single image, the results show that the best classification accuracies ( ≈75% ) are obtained using the [T] matrix with the October images. When adding a second image to the feature set, either from two different dates or two incidence angles, the classification accuracy is improved and reaches 90.1% with two images from October 2011 and April 2012 at 27∘ incidence. The results show that C-band polarimetric SAR imagery is an adequate tool to map shrub vegetation in sub-Arctic environments. |
format |
Article in Journal/Newspaper |
author |
Duguay, Yannick Bernier, Monique Lévesque, Esther Dominé, Florent |
author_facet |
Duguay, Yannick Bernier, Monique Lévesque, Esther Dominé, Florent |
author_sort |
Duguay, Yannick |
title |
Land Cover Classification in SubArctic Regions Using Fully Polarimetric RADARSAT-2 Data. |
title_short |
Land Cover Classification in SubArctic Regions Using Fully Polarimetric RADARSAT-2 Data. |
title_full |
Land Cover Classification in SubArctic Regions Using Fully Polarimetric RADARSAT-2 Data. |
title_fullStr |
Land Cover Classification in SubArctic Regions Using Fully Polarimetric RADARSAT-2 Data. |
title_full_unstemmed |
Land Cover Classification in SubArctic Regions Using Fully Polarimetric RADARSAT-2 Data. |
title_sort |
land cover classification in subarctic regions using fully polarimetric radarsat-2 data. |
publishDate |
2016 |
url |
https://espace.inrs.ca/id/eprint/4688/ https://espace.inrs.ca/id/eprint/4688/1/P2966.pdf https://doi.org/10.3390/rs8090697 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Subarctic |
genre_facet |
Arctic Subarctic |
op_relation |
https://espace.inrs.ca/id/eprint/4688/1/P2966.pdf Duguay, Yannick, Bernier, Monique, Lévesque, Esther et Dominé, Florent (2016). Land Cover Classification in SubArctic Regions Using Fully Polarimetric RADARSAT-2 Data. Remote Sensing , vol. 8 , nº 9. p. 697. DOI:10.3390/rs8090697 <https://doi.org/10.3390/rs8090697>. doi:10.3390/rs8090697 |
op_doi |
https://doi.org/10.3390/rs8090697 |
container_title |
Remote Sensing |
container_volume |
8 |
container_issue |
9 |
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697 |
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1766315470327119872 |