Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-2/W7, 1547-1554, 2017
https://doi.org/10.5194/isprs-archives-XLII-2-W7-1547-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
 
14 Sep 2017
LOCAL AND GENERAL MONITORING OF FORNI GLACIER (ITALIAN ALPS) USING MULTI-PLATFORM STRUCTURE-FROM-MOTION PHOTOGRAMMETRY
M. Scaioni1, M. Corti1, G. Diolaiuti2, D. Fugazza2, and M. Cernuschi3 1Dept. of Architecture, Built environment and Construction engineering (ABC), Politecnico Milano via Ponzio 31, 20133 Milano, Italy
2Department of Environmental Science and Policy (DESP), Università degli studi di Milano via Mangiagalli 34, 20133 Milano, Italy
3Agricola 2000 S.C.P.A., 20067 Tribiano (MI), Italy
Keywords: Forni Glacier, Glaciology, Photogrammetry, Quality Assessment, Structure-from-Motion, UAV/UAS Abstract. Experts from the University of Milan have been investigating Forni Glacier in the Italian alps for decades, resulting in the archive of a cumbersome mass of observed data. While the analysis of archive maps, medium resolution satellite images and DEM’s may provide an overview of the long-term processes, the application of close-range sensing techniques offers the unprecedented opportunity to operate a 4D reconstruction of the glacier geometry at both global and local levels. In the latest years the availability of high-resolution DEM's from stereo-photogrammetry (2007) and UAV-photogrammetry (2014 and 2016) has allowed an improved analysis of the glacier ice-mass balance within time. During summer 2016 a methodology to record the local disruption processes has been investigated. The presence of vertical and sub-vertical surfaces has motivated the use of Structure-from-Motion Photogrammetry from ground-based stations, which yielded results comparable to the ones achieved using a long-range terrestrial laser scanner. This technique may be assumed as benchmarking for accuracy assessment, but is more difficult to be operated in high-mountain areas. Nevertheless, the measurement of GCP’s for the terrestrial photogrammetric project has revealed to be a complex task, involving the need of a total station a GNSS. The effect of network geometry on the final output has also been investigated for SfM-Photogrammetry, considering the severe limitations implied in the Alpine environment.
Conference paper (PDF, 2160 KB)


Citation: Scaioni, M., Corti, M., Diolaiuti, G., Fugazza, D., and Cernuschi, M.: LOCAL AND GENERAL MONITORING OF FORNI GLACIER (ITALIAN ALPS) USING MULTI-PLATFORM STRUCTURE-FROM-MOTION PHOTOGRAMMETRY, Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-2/W7, 1547-1554, https://doi.org/10.5194/isprs-archives-XLII-2-W7-1547-2017, 2017.

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