Usability of aerial video footage for 3-D scene reconstruction and structural damage assessment
Remote sensing has evolved into the most efficient approach to assess post-disaster structural damage, in extensively affected areas through the use of spaceborne data. For smaller, and in particular, complex urban disaster scenes, multi-perspective aerial imagery obtained with unmanned aerial v...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2018-06-01
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| Series: | Natural Hazards and Earth System Sciences |
| Online Access: | https://www.nat-hazards-earth-syst-sci.net/18/1583/2018/nhess-18-1583-2018.pdf |
| _version_ | 1818419845661720576 |
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| author | J. Cusicanqui N. Kerle F. Nex |
| author_facet | J. Cusicanqui N. Kerle F. Nex |
| author_sort | J. Cusicanqui |
| collection | DOAJ |
| description | Remote sensing has evolved into the most efficient approach
to assess post-disaster structural damage, in extensively affected areas
through the use of spaceborne data. For smaller, and in particular, complex
urban disaster scenes, multi-perspective aerial imagery obtained with
unmanned aerial vehicles and derived dense color 3-D models are increasingly
being used. These type of data allow the direct and automated recognition of
damage-related features, supporting an effective post-disaster structural
damage assessment. However, the rapid collection and sharing of
multi-perspective aerial imagery is still limited due to tight or lacking
regulations and legal frameworks. A potential alternative is aerial video
footage, which is typically acquired and shared by civil protection institutions or
news media and which tends to be the first type of airborne data available.
Nevertheless, inherent artifacts and the lack of suitable processing means
have long limited its potential use in structural damage assessment and other
post-disaster activities. In this research the usability of modern aerial
video data was evaluated based on a comparative quality and application
analysis of video data and multi-perspective imagery (photos), and their
derivative 3-D point clouds created using current photogrammetric techniques.
Additionally, the effects of external factors, such as topography and the
presence of smoke and moving objects, were determined by analyzing two
different earthquake-affected sites: Tainan (Taiwan) and Pescara del Tronto
(Italy). Results demonstrated similar usabilities for video and photos. This
is shown by the short 2 cm of difference between the accuracies of video- and
photo-based 3-D point clouds. Despite the low video resolution, the usability
of these data was compensated for by a small ground sampling distance. Instead of
video characteristics, low quality and application resulted from
non-data-related factors, such as changes in the scene, lack of texture, or moving
objects. We conclude that not only are current video data more rapidly
available than photos, but they also have a comparable ability to assist in
image-based structural damage assessment and other post-disaster activities. |
| first_indexed | 2024-12-14T12:45:03Z |
| format | Article |
| id | doaj.art-4dae754d9a8747b0acd3bb5554a1896a |
| institution | Directory Open Access Journal |
| issn | 1561-8633 1684-9981 |
| language | English |
| last_indexed | 2024-12-14T12:45:03Z |
| publishDate | 2018-06-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Natural Hazards and Earth System Sciences |
| spelling | doaj.art-4dae754d9a8747b0acd3bb5554a1896a2022-12-21T23:00:48ZengCopernicus PublicationsNatural Hazards and Earth System Sciences1561-86331684-99812018-06-01181583159810.5194/nhess-18-1583-2018Usability of aerial video footage for 3-D scene reconstruction and structural damage assessmentJ. Cusicanqui0N. Kerle1F. Nex2Faculty of Geo-Information Science and Earth Observation (ITC), University of Twente, Enschede, the NetherlandsFaculty of Geo-Information Science and Earth Observation (ITC), University of Twente, Enschede, the NetherlandsFaculty of Geo-Information Science and Earth Observation (ITC), University of Twente, Enschede, the NetherlandsRemote sensing has evolved into the most efficient approach to assess post-disaster structural damage, in extensively affected areas through the use of spaceborne data. For smaller, and in particular, complex urban disaster scenes, multi-perspective aerial imagery obtained with unmanned aerial vehicles and derived dense color 3-D models are increasingly being used. These type of data allow the direct and automated recognition of damage-related features, supporting an effective post-disaster structural damage assessment. However, the rapid collection and sharing of multi-perspective aerial imagery is still limited due to tight or lacking regulations and legal frameworks. A potential alternative is aerial video footage, which is typically acquired and shared by civil protection institutions or news media and which tends to be the first type of airborne data available. Nevertheless, inherent artifacts and the lack of suitable processing means have long limited its potential use in structural damage assessment and other post-disaster activities. In this research the usability of modern aerial video data was evaluated based on a comparative quality and application analysis of video data and multi-perspective imagery (photos), and their derivative 3-D point clouds created using current photogrammetric techniques. Additionally, the effects of external factors, such as topography and the presence of smoke and moving objects, were determined by analyzing two different earthquake-affected sites: Tainan (Taiwan) and Pescara del Tronto (Italy). Results demonstrated similar usabilities for video and photos. This is shown by the short 2 cm of difference between the accuracies of video- and photo-based 3-D point clouds. Despite the low video resolution, the usability of these data was compensated for by a small ground sampling distance. Instead of video characteristics, low quality and application resulted from non-data-related factors, such as changes in the scene, lack of texture, or moving objects. We conclude that not only are current video data more rapidly available than photos, but they also have a comparable ability to assist in image-based structural damage assessment and other post-disaster activities.https://www.nat-hazards-earth-syst-sci.net/18/1583/2018/nhess-18-1583-2018.pdf |
| spellingShingle | J. Cusicanqui N. Kerle F. Nex Usability of aerial video footage for 3-D scene reconstruction and structural damage assessment Natural Hazards and Earth System Sciences |
| title | Usability of aerial video footage for 3-D scene reconstruction and structural damage assessment |
| title_full | Usability of aerial video footage for 3-D scene reconstruction and structural damage assessment |
| title_fullStr | Usability of aerial video footage for 3-D scene reconstruction and structural damage assessment |
| title_full_unstemmed | Usability of aerial video footage for 3-D scene reconstruction and structural damage assessment |
| title_short | Usability of aerial video footage for 3-D scene reconstruction and structural damage assessment |
| title_sort | usability of aerial video footage for 3 d scene reconstruction and structural damage assessment |
| url | https://www.nat-hazards-earth-syst-sci.net/18/1583/2018/nhess-18-1583-2018.pdf |
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