Analysis of the Suitability of High-Resolution DEM Obtained Using ALS and UAS (SfM) for the Identification of Changes and Monitoring the Development of Selected Geohazards in the Alpine Environment—A Case Study in High Tatras, Slovakia
The current trend in the use of remote sensing technologies is their use as a tool for monitoring hard-to-reach areas, objects or phenomena in the alpine environment. Remote sensing technology is also effectively used to monitor geohazards and the development of human-made changes in the country. Re...
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doaj-69335234086c4c12a7c32c3f60c611dc2020-11-29T00:01:02ZengMDPI AGRemote Sensing2072-42922020-11-01123901390110.3390/rs12233901Analysis of the Suitability of High-Resolution DEM Obtained Using ALS and UAS (SfM) for the Identification of Changes and Monitoring the Development of Selected Geohazards in the Alpine Environment—A Case Study in High Tatras, SlovakiaĽudovít Kovanič0Peter Blistan1Rudolf Urban2Martin Štroner3Monika Blišťanová4Karol Bartoš5Katarína Pukanská6Institute of Geodesy, Cartography and Geographical Information Systems, Faculty of Mining, Ecology, Process Control and Geotechnologies, Technical University Kosice, Park Komenského 19, 04001 Košice, SlovakiaInstitute of Geodesy, Cartography and Geographical Information Systems, Faculty of Mining, Ecology, Process Control and Geotechnologies, Technical University Kosice, Park Komenského 19, 04001 Košice, SlovakiaDepartment of Special Geodesy, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 16629 Prague 6, Czech RepublicDepartment of Special Geodesy, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 16629 Prague 6, Czech RepublicDepartment of Air Traffic Management, Faculty of Aeronautics, Technical University of Košice, Rampová 7, 04001 Košice, SlovakiaInstitute of Geodesy, Cartography and Geographical Information Systems, Faculty of Mining, Ecology, Process Control and Geotechnologies, Technical University Kosice, Park Komenského 19, 04001 Košice, SlovakiaInstitute of Geodesy, Cartography and Geographical Information Systems, Faculty of Mining, Ecology, Process Control and Geotechnologies, Technical University Kosice, Park Komenského 19, 04001 Košice, SlovakiaThe current trend in the use of remote sensing technologies is their use as a tool for monitoring hard-to-reach areas, objects or phenomena in the alpine environment. Remote sensing technology is also effectively used to monitor geohazards and the development of human-made changes in the country. Research presented in this study demonstrates the results for the usability of the publicly available national digital elevation model DEM 5.0 obtained by utilizing the airborne laser scanning (ALS) survey to monitor the development of erosion, morphological changes of talus cones, or the dynamics of movement of rock blocks between stages of measurement in the alpine environment of the High Tatras mountains. The reference methods for this study are the terrestrial laser scanning (TLS) and structure-from-motion (SfM) photogrammetric approach using unmanned aerial systems (UASs). By comparing the created DEMs, the ALS point cloud’s accuracy on mostly rocky areas of different sizes was verified. The results show that the standard deviation of the ALS point cloud ranges from 19 to 46 mm depending on the area’s size and characteristics. The maximum difference ranges from 100 to 741 mm. The value of systematic displacement of data obtained by different technologies ranges from 1 to 29 mm. This research confirms the suitability of the ALS method with its advantages and limits for the detection of movement of rock blocks or change of position of any natural or anthropogenic objects with a size from approximately 1 m<sup>2</sup>.https://www.mdpi.com/2072-4292/12/23/3901TLSSfM photogrammetryUASALSDEMpoint cloud |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ľudovít Kovanič Peter Blistan Rudolf Urban Martin Štroner Monika Blišťanová Karol Bartoš Katarína Pukanská |
spellingShingle |
Ľudovít Kovanič Peter Blistan Rudolf Urban Martin Štroner Monika Blišťanová Karol Bartoš Katarína Pukanská Analysis of the Suitability of High-Resolution DEM Obtained Using ALS and UAS (SfM) for the Identification of Changes and Monitoring the Development of Selected Geohazards in the Alpine Environment—A Case Study in High Tatras, Slovakia Remote Sensing TLS SfM photogrammetry UAS ALS DEM point cloud |
author_facet |
Ľudovít Kovanič Peter Blistan Rudolf Urban Martin Štroner Monika Blišťanová Karol Bartoš Katarína Pukanská |
author_sort |
Ľudovít Kovanič |
title |
Analysis of the Suitability of High-Resolution DEM Obtained Using ALS and UAS (SfM) for the Identification of Changes and Monitoring the Development of Selected Geohazards in the Alpine Environment—A Case Study in High Tatras, Slovakia |
title_short |
Analysis of the Suitability of High-Resolution DEM Obtained Using ALS and UAS (SfM) for the Identification of Changes and Monitoring the Development of Selected Geohazards in the Alpine Environment—A Case Study in High Tatras, Slovakia |
title_full |
Analysis of the Suitability of High-Resolution DEM Obtained Using ALS and UAS (SfM) for the Identification of Changes and Monitoring the Development of Selected Geohazards in the Alpine Environment—A Case Study in High Tatras, Slovakia |
title_fullStr |
Analysis of the Suitability of High-Resolution DEM Obtained Using ALS and UAS (SfM) for the Identification of Changes and Monitoring the Development of Selected Geohazards in the Alpine Environment—A Case Study in High Tatras, Slovakia |
title_full_unstemmed |
Analysis of the Suitability of High-Resolution DEM Obtained Using ALS and UAS (SfM) for the Identification of Changes and Monitoring the Development of Selected Geohazards in the Alpine Environment—A Case Study in High Tatras, Slovakia |
title_sort |
analysis of the suitability of high-resolution dem obtained using als and uas (sfm) for the identification of changes and monitoring the development of selected geohazards in the alpine environment—a case study in high tatras, slovakia |
publisher |
MDPI AG |
series |
Remote Sensing |
issn |
2072-4292 |
publishDate |
2020-11-01 |
description |
The current trend in the use of remote sensing technologies is their use as a tool for monitoring hard-to-reach areas, objects or phenomena in the alpine environment. Remote sensing technology is also effectively used to monitor geohazards and the development of human-made changes in the country. Research presented in this study demonstrates the results for the usability of the publicly available national digital elevation model DEM 5.0 obtained by utilizing the airborne laser scanning (ALS) survey to monitor the development of erosion, morphological changes of talus cones, or the dynamics of movement of rock blocks between stages of measurement in the alpine environment of the High Tatras mountains. The reference methods for this study are the terrestrial laser scanning (TLS) and structure-from-motion (SfM) photogrammetric approach using unmanned aerial systems (UASs). By comparing the created DEMs, the ALS point cloud’s accuracy on mostly rocky areas of different sizes was verified. The results show that the standard deviation of the ALS point cloud ranges from 19 to 46 mm depending on the area’s size and characteristics. The maximum difference ranges from 100 to 741 mm. The value of systematic displacement of data obtained by different technologies ranges from 1 to 29 mm. This research confirms the suitability of the ALS method with its advantages and limits for the detection of movement of rock blocks or change of position of any natural or anthropogenic objects with a size from approximately 1 m<sup>2</sup>. |
topic |
TLS SfM photogrammetry UAS ALS DEM point cloud |
url |
https://www.mdpi.com/2072-4292/12/23/3901 |
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