Photogrammetric survey with fisheye lens for the characterization of the la Sassa cave

L. Alessandri, V. Baiocchi, S. Del Pizzo, M. F. Rolfo, S. Troisi

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Abstract

The survey of ancient cave can generally be performed by traditional topographic methods that allow also its georeferencing in a global reference frame; some difficulties may arise when there are narrow tunnels that do not consent the use of a total station or a terrestrial laser scanner. In such cases a visual-based approach can be used to produce, both the followed path and the 3D model of the hypogeal environment. A prompt photogrammetric survey has been used to reconstruct the morphology of the La Sassa Cave, situated in the municipality of Sonnino (Latina), in the lower Lazio region. In this cave, a very large quantity of Pleistocene animal bones was found, together with several fragments of Copper Age human bones and Bronze Age impasto potsherds. The survey was carried out using a DSLR full frame camera Nikon D800E with a Nikkor 16 mm fisheye lens pre-calibrated. During the acquisition, several targets were measured in order to contain the deformations model. The photogrammetric model has been georeferenced using 3 GCPs positioned outside the cave entrance where a double frequency GNSS receiver has acquired data in static session mode.

Original languageEnglish
Pages (from-to)25-32
Number of pages8
JournalISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Volume42
Issue number2/W9
DOIs
Publication statusPublished - 31-Jan-2019
Event8th International Workshop on 3D Virtual Reconstruction and Visualization of Complex Architectures, 3D-ARCH 2019 - Bergamo, Italy
Duration: 6-Feb-20198-Feb-2019

Keywords

  • 3D modeling
  • Bronze Age
  • Cultural Heritage
  • Georeferencing
  • Photogrammetry
  • Pleistocene
  • Structure from Motion

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