Intercomparison of photogrammetric platforms for spatially continuous snow depth mapping
Snow depth has traditionally been estimated based on point measurements collected either manually or at automated weather stations. Point measurements, though, do not represent the high spatial variability in snow depths present in alpine terrain. Photogrammetric mapping techniques have progressed i...
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Copernicus Publications
2021
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fttriple:oai:gotriple.eu:oai:doaj.org/article:fc1d6e622aec4cf0ad38b0bc20a4a0f7 2023-05-15T18:32:19+02:00 Intercomparison of photogrammetric platforms for spatially continuous snow depth mapping L. A. Eberhard P. Sirguey A. Miller M. Marty K. Schindler A. Stoffel Y. Bühler 2021-01-01 https://doi.org/10.5194/tc-15-69-2021 https://tc.copernicus.org/articles/15/69/2021/tc-15-69-2021.pdf https://doaj.org/article/fc1d6e622aec4cf0ad38b0bc20a4a0f7 en eng Copernicus Publications doi:10.5194/tc-15-69-2021 1994-0416 1994-0424 https://tc.copernicus.org/articles/15/69/2021/tc-15-69-2021.pdf https://doaj.org/article/fc1d6e622aec4cf0ad38b0bc20a4a0f7 undefined The Cryosphere, Vol 15, Pp 69-94 (2021) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2021 fttriple https://doi.org/10.5194/tc-15-69-2021 2023-01-22T17:53:03Z Snow depth has traditionally been estimated based on point measurements collected either manually or at automated weather stations. Point measurements, though, do not represent the high spatial variability in snow depths present in alpine terrain. Photogrammetric mapping techniques have progressed in recent years and are capable of accurately mapping snow depth in a spatially continuous manner, over larger areas and at various spatial resolutions. However, the strengths and weaknesses associated with specific platforms and photogrammetric techniques as well as the accuracy of the photogrammetric performance on snow surfaces have not yet been sufficiently investigated. Therefore, industry-standard photogrammetric platforms, including high-resolution satellite (Pléiades), airplane (Ultracam Eagle M3), unmanned aerial system (eBee+ RTK with SenseFly S.O.D.A. camera) and terrestrial (single lens reflex camera, Canon EOS 750D) platforms, were tested for snow depth mapping in the alpine Dischma valley (Switzerland) in spring 2018. Imagery was acquired with airborne and space-borne platforms over the entire valley, while unmanned aerial system (UAS) and terrestrial photogrammetric imagery was acquired over a subset of the valley. For independent validation of the photogrammetric products, snow depth was measured by probing as well as by using remote observations of fixed snow poles. When comparing snow depth maps with manual and snow pole measurements, the root mean square error (RMSE) values and the normalized median absolute deviation (NMAD) values were 0.52 and 0.47 m, respectively, for the satellite snow depth map, 0.17 and 0.17 m for the airplane snow depth map, and 0.16 and 0.11 m for the UAS snow depth map. The area covered by the terrestrial snow depth map only intersected with four manual measurements and did not generate statistically relevant measurements. When using the UAS snow depth map as a reference surface, the RMSE and NMAD values were 0.44 and 0.38 m for the satellite snow depth map, 0.12 and 0.11 m ... Article in Journal/Newspaper The Cryosphere Unknown The Cryosphere 15 1 69 94 |
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geo envir L. A. Eberhard P. Sirguey A. Miller M. Marty K. Schindler A. Stoffel Y. Bühler Intercomparison of photogrammetric platforms for spatially continuous snow depth mapping |
topic_facet |
geo envir |
description |
Snow depth has traditionally been estimated based on point measurements collected either manually or at automated weather stations. Point measurements, though, do not represent the high spatial variability in snow depths present in alpine terrain. Photogrammetric mapping techniques have progressed in recent years and are capable of accurately mapping snow depth in a spatially continuous manner, over larger areas and at various spatial resolutions. However, the strengths and weaknesses associated with specific platforms and photogrammetric techniques as well as the accuracy of the photogrammetric performance on snow surfaces have not yet been sufficiently investigated. Therefore, industry-standard photogrammetric platforms, including high-resolution satellite (Pléiades), airplane (Ultracam Eagle M3), unmanned aerial system (eBee+ RTK with SenseFly S.O.D.A. camera) and terrestrial (single lens reflex camera, Canon EOS 750D) platforms, were tested for snow depth mapping in the alpine Dischma valley (Switzerland) in spring 2018. Imagery was acquired with airborne and space-borne platforms over the entire valley, while unmanned aerial system (UAS) and terrestrial photogrammetric imagery was acquired over a subset of the valley. For independent validation of the photogrammetric products, snow depth was measured by probing as well as by using remote observations of fixed snow poles. When comparing snow depth maps with manual and snow pole measurements, the root mean square error (RMSE) values and the normalized median absolute deviation (NMAD) values were 0.52 and 0.47 m, respectively, for the satellite snow depth map, 0.17 and 0.17 m for the airplane snow depth map, and 0.16 and 0.11 m for the UAS snow depth map. The area covered by the terrestrial snow depth map only intersected with four manual measurements and did not generate statistically relevant measurements. When using the UAS snow depth map as a reference surface, the RMSE and NMAD values were 0.44 and 0.38 m for the satellite snow depth map, 0.12 and 0.11 m ... |
format |
Article in Journal/Newspaper |
author |
L. A. Eberhard P. Sirguey A. Miller M. Marty K. Schindler A. Stoffel Y. Bühler |
author_facet |
L. A. Eberhard P. Sirguey A. Miller M. Marty K. Schindler A. Stoffel Y. Bühler |
author_sort |
L. A. Eberhard |
title |
Intercomparison of photogrammetric platforms for spatially continuous snow depth mapping |
title_short |
Intercomparison of photogrammetric platforms for spatially continuous snow depth mapping |
title_full |
Intercomparison of photogrammetric platforms for spatially continuous snow depth mapping |
title_fullStr |
Intercomparison of photogrammetric platforms for spatially continuous snow depth mapping |
title_full_unstemmed |
Intercomparison of photogrammetric platforms for spatially continuous snow depth mapping |
title_sort |
intercomparison of photogrammetric platforms for spatially continuous snow depth mapping |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-15-69-2021 https://tc.copernicus.org/articles/15/69/2021/tc-15-69-2021.pdf https://doaj.org/article/fc1d6e622aec4cf0ad38b0bc20a4a0f7 |
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The Cryosphere |
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The Cryosphere |
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The Cryosphere, Vol 15, Pp 69-94 (2021) |
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doi:10.5194/tc-15-69-2021 1994-0416 1994-0424 https://tc.copernicus.org/articles/15/69/2021/tc-15-69-2021.pdf https://doaj.org/article/fc1d6e622aec4cf0ad38b0bc20a4a0f7 |
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https://doi.org/10.5194/tc-15-69-2021 |
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The Cryosphere |
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