Supporting rock-fall risk analysis of cliff faces by terrestrial laser scanning and UAV imagery

Tamás Lovas, Árpád Somogyi, A. Török, Zoltán Koppányi, Bence Molnár

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Cutting edge close-range remote sensing technologies, such as terrestrial laser scanning or dense3D from UAV imagery provide different kinds of point clouds that can be fused to achieve improved quality spatial models. While laser scanners are mounted on or close to the ground and therefore suffer from disadvantageous incidence angles and potential occlusions, UAV images can be captured from view positions close to perpendicular to the surface. On the other hand laser can penetrate through vegetation that can be especially problematic for dense3D algorithms in obtaining terrain models. This paper demonstrates how the point clouds derived from different sources can support engineering geological survey and related slope stability analyses. Steep rhyolite tuff cliff faces hosting a hill top castle have been laser scanned and captured by UAV in the same time. The observed cliffs are located above a footpath and subjected to rock-fall hazards, hence can be dangerous to the visitors walking around the castle. The investigations proved how the high resolution laser point clouds can be complemented by the data coming from the dense3D procedure in the occluded areas. Accurate CAD products have been created as inputs for engineering geological profiling and cliff stability analysis. RGB images and point cloud intensity images were used to create streetview-like application that enables geologists to dynamically observe the texture of the rocks through high resolution panoramic imagery.

Original languageEnglish
Title of host publicationASPRS 2016 Annual Conference: IGTF 2016 - Imaging and Geospatial Technology Forum and co-located JACIE Workshop
PublisherAmerican Society for Photogrammetry and Remote Sensing
Publication statusPublished - 2016
EventImaging and Geospatial Technology Forum, IGTF 2016 - ASPRS Annual Conference and co-located JACIE Workshop - Fort Worth, United States
Duration: Apr 11 2016Apr 15 2016

Other

OtherImaging and Geospatial Technology Forum, IGTF 2016 - ASPRS Annual Conference and co-located JACIE Workshop
CountryUnited States
CityFort Worth
Period4/11/164/15/16

Fingerprint

Risk analysis
Unmanned aerial vehicles (UAV)
cliff
imagery
laser
Rocks
Scanning
Lasers
rock
engineering
Geological surveys
Slope stability
computer aided design
walking
rhyolite
scanner
slope stability
tuff
stability analysis
geological survey

ASJC Scopus subject areas

  • Computer Science (miscellaneous)
  • Geotechnical Engineering and Engineering Geology
  • Earth and Planetary Sciences (miscellaneous)
  • Computers in Earth Sciences

Cite this

Lovas, T., Somogyi, Á., Török, A., Koppányi, Z., & Molnár, B. (2016). Supporting rock-fall risk analysis of cliff faces by terrestrial laser scanning and UAV imagery. In ASPRS 2016 Annual Conference: IGTF 2016 - Imaging and Geospatial Technology Forum and co-located JACIE Workshop American Society for Photogrammetry and Remote Sensing.

Supporting rock-fall risk analysis of cliff faces by terrestrial laser scanning and UAV imagery. / Lovas, Tamás; Somogyi, Árpád; Török, A.; Koppányi, Zoltán; Molnár, Bence.

ASPRS 2016 Annual Conference: IGTF 2016 - Imaging and Geospatial Technology Forum and co-located JACIE Workshop. American Society for Photogrammetry and Remote Sensing, 2016.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Lovas, T, Somogyi, Á, Török, A, Koppányi, Z & Molnár, B 2016, Supporting rock-fall risk analysis of cliff faces by terrestrial laser scanning and UAV imagery. in ASPRS 2016 Annual Conference: IGTF 2016 - Imaging and Geospatial Technology Forum and co-located JACIE Workshop. American Society for Photogrammetry and Remote Sensing, Imaging and Geospatial Technology Forum, IGTF 2016 - ASPRS Annual Conference and co-located JACIE Workshop, Fort Worth, United States, 4/11/16.
Lovas T, Somogyi Á, Török A, Koppányi Z, Molnár B. Supporting rock-fall risk analysis of cliff faces by terrestrial laser scanning and UAV imagery. In ASPRS 2016 Annual Conference: IGTF 2016 - Imaging and Geospatial Technology Forum and co-located JACIE Workshop. American Society for Photogrammetry and Remote Sensing. 2016
Lovas, Tamás ; Somogyi, Árpád ; Török, A. ; Koppányi, Zoltán ; Molnár, Bence. / Supporting rock-fall risk analysis of cliff faces by terrestrial laser scanning and UAV imagery. ASPRS 2016 Annual Conference: IGTF 2016 - Imaging and Geospatial Technology Forum and co-located JACIE Workshop. American Society for Photogrammetry and Remote Sensing, 2016.
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