3D images for digital geological mapping

3D images combine visual and geometric information making them an obvious source for capturing and characterising rock surfaces especially when there are constrained time and access conditions. By taking photographs with an off‐the‐shelf camera and using modern algorithms from photogrammetry, 3D ima...

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Bibliographic Details
Published in:Geomechanik und Tunnelbau 2016-02, Vol.9 (1), p.45-51
Main Authors: Gaich, Andreas, Pischinger, Gerald
Format: Article
Language:English
Subjects:
3D image generation
Algorithms
Constraints
Conventional tunneling - Konventioneller Vortrieb
data acquisition
Engineering geology - Ingenieurgeologie
Imaging
Measuring technology - Messtechnik
Photogrammetry
Rock
State of the art
Three dimensional
Three dimensional imaging
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Description
Summary:3D images combine visual and geometric information making them an obvious source for capturing and characterising rock surfaces especially when there are constrained time and access conditions. By taking photographs with an off‐the‐shelf camera and using modern algorithms from photogrammetry, 3D imaging has become state of the art on many conventional tunnel construction sites. Data is acquired on a daily basis, processed, geologically assessed, and finally stored in a suitable data base. The contribution provides a brief introduction of the technology and its measurement capabilities, as well as a description of the practical application during the construction of the 8 km long Gleinalmtunnel in Austria.
ISSN:1865-7362
1865-7389
DOI:10.1002/geot.201500048