Digital models based on images taken with handheld cameras – examples on land, from the sea and on ice
Geological outcrops can be comfortably modelled in three dimensions in the office using images from a handheld digital camera. Recent developments within the imaging techniques of Structure from Motion (Lowe 2004; Snavely et al. 2008; Fonstad et al. 2013) and photogrammetry (Hirschmüller 2005; James...
Published in: | Geological Survey of Denmark and Greenland Bulletin |
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Geological Survey of Denmark and Greenland (GEUS)
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ftjgeusbullet:oai:geusjournals.org:article/4513 2023-05-15T16:03:49+02:00 Digital models based on images taken with handheld cameras – examples on land, from the sea and on ice Vest Sørensen, Erik Bjerager, Morten Citterio, Michele 2015-07-07 application/pdf https://geusbulletin.org/index.php/geusb/article/view/4513 https://doi.org/10.34194/geusb.v33.4513 eng eng Geological Survey of Denmark and Greenland (GEUS) https://geusbulletin.org/index.php/geusb/article/view/4513/10221 https://geusbulletin.org/index.php/geusb/article/view/4513 doi:10.34194/geusb.v33.4513 GEUS Bulletin; Vol. 33 (2015): Review of Survey activities 2014; 73-76 2597-2154 2597-2162 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Rapid Communication. Peer-reviewed Article. 2015 ftjgeusbullet https://doi.org/10.34194/geusb.v33.4513 2022-03-15T17:22:06Z Geological outcrops can be comfortably modelled in three dimensions in the office using images from a handheld digital camera. Recent developments within the imaging techniques of Structure from Motion (Lowe 2004; Snavely et al. 2008; Fonstad et al. 2013) and photogrammetry (Hirschmüller 2005; James & Robson 2012; Favalli et al. 2012) have made it easier and cheaper to construct so-called digital outcrop models using stereoscopic images from standard digital cameras. The digital outcrop model (Bellian et al. 2005) is a 3D representation of the outcrop surface and is often displayed in the form of a polygon mesh or a point cloud. In this paper we present three examples of such point clouds from images obtained with a handheld digital camera. The examples illustrate how outcrop topography or digital outcrop models can be constructed at different scales, with different accessibility and operational platforms. Two examples illustrate outcrop scales of metres to kilometres, with images obtained by walking along excavated exposures in the Faxe limestone quarry and from a boat sailing past the coastal cliff of Stevns Klint. The third example illustrates detailed micro-topography of ice and snow surfaces where the images were obtained from a snowmobile on an ice cap in A.P. Olsen Land, North-East Greenland. Article in Journal/Newspaper East Greenland Greenland Ice cap GEUS Bulletin (Geological Survey of Denmark and Greenland) Greenland Lowe ENVELOPE(-30.309,-30.309,-80.537,-80.537) A.P. Olsen Land ENVELOPE(-21.583,-21.583,74.600,74.600) Geological Survey of Denmark and Greenland Bulletin 73 76 |
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Open Polar |
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GEUS Bulletin (Geological Survey of Denmark and Greenland) |
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ftjgeusbullet |
language |
English |
description |
Geological outcrops can be comfortably modelled in three dimensions in the office using images from a handheld digital camera. Recent developments within the imaging techniques of Structure from Motion (Lowe 2004; Snavely et al. 2008; Fonstad et al. 2013) and photogrammetry (Hirschmüller 2005; James & Robson 2012; Favalli et al. 2012) have made it easier and cheaper to construct so-called digital outcrop models using stereoscopic images from standard digital cameras. The digital outcrop model (Bellian et al. 2005) is a 3D representation of the outcrop surface and is often displayed in the form of a polygon mesh or a point cloud. In this paper we present three examples of such point clouds from images obtained with a handheld digital camera. The examples illustrate how outcrop topography or digital outcrop models can be constructed at different scales, with different accessibility and operational platforms. Two examples illustrate outcrop scales of metres to kilometres, with images obtained by walking along excavated exposures in the Faxe limestone quarry and from a boat sailing past the coastal cliff of Stevns Klint. The third example illustrates detailed micro-topography of ice and snow surfaces where the images were obtained from a snowmobile on an ice cap in A.P. Olsen Land, North-East Greenland. |
format |
Article in Journal/Newspaper |
author |
Vest Sørensen, Erik Bjerager, Morten Citterio, Michele |
spellingShingle |
Vest Sørensen, Erik Bjerager, Morten Citterio, Michele Digital models based on images taken with handheld cameras – examples on land, from the sea and on ice |
author_facet |
Vest Sørensen, Erik Bjerager, Morten Citterio, Michele |
author_sort |
Vest Sørensen, Erik |
title |
Digital models based on images taken with handheld cameras – examples on land, from the sea and on ice |
title_short |
Digital models based on images taken with handheld cameras – examples on land, from the sea and on ice |
title_full |
Digital models based on images taken with handheld cameras – examples on land, from the sea and on ice |
title_fullStr |
Digital models based on images taken with handheld cameras – examples on land, from the sea and on ice |
title_full_unstemmed |
Digital models based on images taken with handheld cameras – examples on land, from the sea and on ice |
title_sort |
digital models based on images taken with handheld cameras – examples on land, from the sea and on ice |
publisher |
Geological Survey of Denmark and Greenland (GEUS) |
publishDate |
2015 |
url |
https://geusbulletin.org/index.php/geusb/article/view/4513 https://doi.org/10.34194/geusb.v33.4513 |
long_lat |
ENVELOPE(-30.309,-30.309,-80.537,-80.537) ENVELOPE(-21.583,-21.583,74.600,74.600) |
geographic |
Greenland Lowe A.P. Olsen Land |
geographic_facet |
Greenland Lowe A.P. Olsen Land |
genre |
East Greenland Greenland Ice cap |
genre_facet |
East Greenland Greenland Ice cap |
op_source |
GEUS Bulletin; Vol. 33 (2015): Review of Survey activities 2014; 73-76 2597-2154 2597-2162 |
op_relation |
https://geusbulletin.org/index.php/geusb/article/view/4513/10221 https://geusbulletin.org/index.php/geusb/article/view/4513 doi:10.34194/geusb.v33.4513 |
op_doi |
https://doi.org/10.34194/geusb.v33.4513 |
container_title |
Geological Survey of Denmark and Greenland Bulletin |
container_start_page |
73 |
op_container_end_page |
76 |
_version_ |
1766399499345854464 |