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The reproducibility of SfM algorithms to produce detailed Digital Surface Models: the example of PhotoScan applied to a high-alpine rock glacier

Hendrickx, Hanne ; Vivero, Sebastián ; Cock, Laure De ; De Wit, Bart ; De Maeyer, Philippe ; Lambiel, Christophe ; Delaloye, Reynald ; Nyssen, Jan ; Frankl, Amaury

In: Remote Sensing Letters, 2019, vol. 10, no. 1, p. 11–20

In geomorphology, PhotoScan is a software that is used to produce Digital Surface Models (DSMs). It constructs 3D environments from 2D imagery (often taken by Unmanned Aerial Vehicles (UAV)) based on Structure-from-Motion (SfM) and Multi- View Stereo (MVS) principles. However, unpublished computer-vision algorithms used, contain random elements which can affect the accuracy of the outputs. For...