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Progress in Earth and Planetary Science

Table 1 Point cloud properties acquired via UAV-SfM and TLS

From: Spatial accuracy assessment of unmanned aerial vehicle-based structures from motion multi-view stereo photogrammetry for geomorphic observations in initiation zones of debris flows, Ohya landslide, Japan

Measurement type

UAV-SfM

TLS

Point density (pt/m2)

483.6

281.1

Standard deviation in point density (pt/m2)

112.6

173.2

Average point spacing (mm)

45.5

59.6

Marge of scans

Tie point matching

ー

Precision of marge (mm)

<6

ー

Interpolator creating DEM

TIN

TIN

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