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  5. SLAM LiDAR in Italy’s Frasassi caves

Case studies

SLAM LiDAR in Italy’s Frasassi caves

25 July 2025
  • S2

ROGO Technologies and the University of Camerino scanned parts of Frasassi with the FJD Trion S2: no targets, no GPS, less time underground — and a digital twin in Trion Model.

Point cloud from the Frasassi caves scanned with the FJD Trion S2

Under the Apennines in central Italy lie the Frasassi caves — limestone rooms shaped by water over millions of years, including the well-known Candeline Hall. Riccardo Gosetti of ROGO Technologies led a scan of part of the cave with the FJD Trion S2. Geologist Fabrizio Bendia from the University of Camerino joined the documentation and interpretation.

Mapping where a tripod does not fit

S2 SLAM builds the path while the operator walks: 120 m range, 320,000 points per second, about ±1.2 cm, and two 12 MP cameras that support visual tracking. No extra targets or reference network were required. The light handheld form reduced the risk of touching fragile formations, and the short time underground matters in dark, humid air.

Hand holding a phone showing the live scan of the Frasassi cave
Live view of the Frasassi scan, with the limestone cave behind the phone.

In FJD Trion Model the team extracted sections, elevation profiles, distances, and volumes, and exported LAS, PLY, and E57. The digital twin can track geological change, support research, and show the cave without loading the site.

Summarised from a customer story published by FJD Trion (Opens in a new tab). Contact Norrpoint for the S2 in closed terrain.

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