Automated avalanche mapping from SPOT 6/7 satellite imagery with deep learning: results, evaluation, potential and limitations
Spatially dense and continuous information on avalanche occurrences is crucial for numerous safety-related applications such as avalanche warning, hazard zoning, hazard mitigation measures, forestry, risk management and numerical simulations. This information is today still collected in a non-system...
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ftunivzuerich:oai:www.zora.uzh.ch:223342 2024-09-30T14:44:54+00:00 Automated avalanche mapping from SPOT 6/7 satellite imagery with deep learning: results, evaluation, potential and limitations Hafner, Elisabeth D Barton, Patrick Daudt, Rodrigo Caye Wegner, Jan Dirk Schindler, Konrad Bühler, Yves 2022-09-02 application/pdf https://www.zora.uzh.ch/id/eprint/223342/ https://www.zora.uzh.ch/id/eprint/223342/1/ZORA_tc_16_3517_2022.pdf https://doi.org/10.5167/uzh-223342 https://doi.org/10.5194/tc-16-3517-2022 eng eng Copernicus Publications https://www.zora.uzh.ch/id/eprint/223342/1/ZORA_tc_16_3517_2022.pdf doi:10.5167/uzh-223342 doi:10.5194/tc-16-3517-2022 urn:issn:1994-0416 info:eu-repo/semantics/openAccess Creative Commons: Attribution 4.0 International (CC BY 4.0) http://creativecommons.org/licenses/by/4.0/ Hafner, Elisabeth D; Barton, Patrick; Daudt, Rodrigo Caye; Wegner, Jan Dirk; Schindler, Konrad; Bühler, Yves (2022). Automated avalanche mapping from SPOT 6/7 satellite imagery with deep learning: results, evaluation, potential and limitations. The Cryosphere, 16(9):3517-3530. Institute for Computational Science Digital Society Initiative 530 Physics Earth-Surface Processes Water Science and Technology Journal Article PeerReviewed info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2022 ftunivzuerich https://doi.org/10.5167/uzh-22334210.5194/tc-16-3517-2022 2024-09-04T00:39:07Z Spatially dense and continuous information on avalanche occurrences is crucial for numerous safety-related applications such as avalanche warning, hazard zoning, hazard mitigation measures, forestry, risk management and numerical simulations. This information is today still collected in a non-systematic way by observers in the field. Current research has explored the application of remote sensing technology to fill this information gap by providing spatially continuous information on avalanche occurrences over large regions. Previous investigations have confirmed the high potential of avalanche mapping from remotely sensed imagery to complement existing databases. Currently, the bottleneck for fast data provision from optical data is the time-consuming manual mapping. In our study we deploy a slightly adapted DeepLabV3+, a state-of-the-art deep learning model, to automatically identify and map avalanches in SPOT 6/7 imagery from 24 January 2018 and 16 January 2019. We relied on 24 778 manually annotated avalanche polygons split into geographically disjointed regions for training, validating and testing. Additionally, we investigate generalization ability by testing our best model configuration on SPOT 6/7 data from 6 January 2018 and comparing it to avalanches we manually annotated for that purpose. To assess the quality of the model results, we investigate the probability of detection (POD), the positive predictive value (PPV) and the F1 score. Additionally, we assessed the reproducibility of manually annotated avalanches in a small subset of our data. We achieved an average POD of 0.610, PPV of 0.668 and an F1 score of 0.625 in our test areas and found an F1 score in the same range for avalanche outlines annotated by different experts. Our model and approach are an important step towards a fast and comprehensive documentation of avalanche periods from optical satellite imagery in the future, complementing existing avalanche databases. This will have a large impact on safety-related applications, making ... Article in Journal/Newspaper The Cryosphere University of Zurich (UZH): ZORA (Zurich Open Repository and Archive |
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Open Polar |
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University of Zurich (UZH): ZORA (Zurich Open Repository and Archive |
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ftunivzuerich |
language |
English |
topic |
Institute for Computational Science Digital Society Initiative 530 Physics Earth-Surface Processes Water Science and Technology |
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Institute for Computational Science Digital Society Initiative 530 Physics Earth-Surface Processes Water Science and Technology Hafner, Elisabeth D Barton, Patrick Daudt, Rodrigo Caye Wegner, Jan Dirk Schindler, Konrad Bühler, Yves Automated avalanche mapping from SPOT 6/7 satellite imagery with deep learning: results, evaluation, potential and limitations |
topic_facet |
Institute for Computational Science Digital Society Initiative 530 Physics Earth-Surface Processes Water Science and Technology |
description |
Spatially dense and continuous information on avalanche occurrences is crucial for numerous safety-related applications such as avalanche warning, hazard zoning, hazard mitigation measures, forestry, risk management and numerical simulations. This information is today still collected in a non-systematic way by observers in the field. Current research has explored the application of remote sensing technology to fill this information gap by providing spatially continuous information on avalanche occurrences over large regions. Previous investigations have confirmed the high potential of avalanche mapping from remotely sensed imagery to complement existing databases. Currently, the bottleneck for fast data provision from optical data is the time-consuming manual mapping. In our study we deploy a slightly adapted DeepLabV3+, a state-of-the-art deep learning model, to automatically identify and map avalanches in SPOT 6/7 imagery from 24 January 2018 and 16 January 2019. We relied on 24 778 manually annotated avalanche polygons split into geographically disjointed regions for training, validating and testing. Additionally, we investigate generalization ability by testing our best model configuration on SPOT 6/7 data from 6 January 2018 and comparing it to avalanches we manually annotated for that purpose. To assess the quality of the model results, we investigate the probability of detection (POD), the positive predictive value (PPV) and the F1 score. Additionally, we assessed the reproducibility of manually annotated avalanches in a small subset of our data. We achieved an average POD of 0.610, PPV of 0.668 and an F1 score of 0.625 in our test areas and found an F1 score in the same range for avalanche outlines annotated by different experts. Our model and approach are an important step towards a fast and comprehensive documentation of avalanche periods from optical satellite imagery in the future, complementing existing avalanche databases. This will have a large impact on safety-related applications, making ... |
format |
Article in Journal/Newspaper |
author |
Hafner, Elisabeth D Barton, Patrick Daudt, Rodrigo Caye Wegner, Jan Dirk Schindler, Konrad Bühler, Yves |
author_facet |
Hafner, Elisabeth D Barton, Patrick Daudt, Rodrigo Caye Wegner, Jan Dirk Schindler, Konrad Bühler, Yves |
author_sort |
Hafner, Elisabeth D |
title |
Automated avalanche mapping from SPOT 6/7 satellite imagery with deep learning: results, evaluation, potential and limitations |
title_short |
Automated avalanche mapping from SPOT 6/7 satellite imagery with deep learning: results, evaluation, potential and limitations |
title_full |
Automated avalanche mapping from SPOT 6/7 satellite imagery with deep learning: results, evaluation, potential and limitations |
title_fullStr |
Automated avalanche mapping from SPOT 6/7 satellite imagery with deep learning: results, evaluation, potential and limitations |
title_full_unstemmed |
Automated avalanche mapping from SPOT 6/7 satellite imagery with deep learning: results, evaluation, potential and limitations |
title_sort |
automated avalanche mapping from spot 6/7 satellite imagery with deep learning: results, evaluation, potential and limitations |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://www.zora.uzh.ch/id/eprint/223342/ https://www.zora.uzh.ch/id/eprint/223342/1/ZORA_tc_16_3517_2022.pdf https://doi.org/10.5167/uzh-223342 https://doi.org/10.5194/tc-16-3517-2022 |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_source |
Hafner, Elisabeth D; Barton, Patrick; Daudt, Rodrigo Caye; Wegner, Jan Dirk; Schindler, Konrad; Bühler, Yves (2022). Automated avalanche mapping from SPOT 6/7 satellite imagery with deep learning: results, evaluation, potential and limitations. The Cryosphere, 16(9):3517-3530. |
op_relation |
https://www.zora.uzh.ch/id/eprint/223342/1/ZORA_tc_16_3517_2022.pdf doi:10.5167/uzh-223342 doi:10.5194/tc-16-3517-2022 urn:issn:1994-0416 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons: Attribution 4.0 International (CC BY 4.0) http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.5167/uzh-22334210.5194/tc-16-3517-2022 |
_version_ |
1811645902464483328 |