Towards digital preservation of Repedea's big quarry outcrop using “Structure-from-Motion” photogrammetry tools
Tony Cristian Dumitriu - “Al. I. Cuza” University of Iaşi, Faculty of Geography and Geology, Department of Geology, 20A Carol I Blv., 700505 Iaşi, Romania, Department of Geology
View abstract as pdf file | View full article as pdf file
In the present paper, four free “structure from motion” photogrammetry tools (Visual SfM with
PMVS/CMVS, Photosynth with PhotoSynthToolkit, 123D Catch and Recap Photo) have been
compared using photographs taken from four locations in Hășmaș Mountains, in order to
determine which tool is better suitable for Repedea Hill’s big quarry outcrop preservation and
study. The results have shown that 123D Catch has provided a very good texture and geometry
detail of the 3D models that can also be used with ease between many modeling software.
Therefore the resulting Repedea 3D outcrop models (nine 3D models) are precise and highly
detailed preserving a good geometry of the original outcrop and making possible a preliminary
calculation of surfaces and volumes of some parts from the studied area. Thus, digitizing the
outcrop partially solves the problem of geological reservation preservation by keeping the
studied area in a virtual environment in which further geological investigation is possible.
Repedea Hill, structure from motion photogrammetry, 3D outcrop, geological
reservation, Hășmaș Mountains, Moldavian Platform