The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume XL-5/W5
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-5/W5, 183–190, 2015
https://doi.org/10.5194/isprsarchives-XL-5-W5-183-2015
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-5/W5, 183–190, 2015
https://doi.org/10.5194/isprsarchives-XL-5-W5-183-2015

  09 Apr 2015

09 Apr 2015

INSTRUMENTS AND METHODOLOGIES FOR THE UNDERWATER TRIDIMENSIONAL DIGITIZATION AND DATA MUSEALIZATION

L. Repola, R. Memmolo, and D. Signoretti L. Repola et al.
  • Suor Orsola Benincasa University, via Suor Orsola 10, 80135, Napoli, Italy

Keywords: ScubaLibre, Survey, Tridimensional, Underwater, Archeology, Musealization, Computer vision, Stereoscopy

Abstract. In the research started within the SINAPSIS project of the Università degli Studi Suor Orsola Benincasa an underwater stereoscopic scanning aimed at surveying of submerged archaeological sites, integrable to standard systems for geomorphological detection of the coast, has been developed. The project involves the construction of hardware consisting of an aluminum frame supporting a pair of GoPro Hero Black Edition cameras and software for the production of point clouds and the initial processing of data.

The software has features for stereoscopic vision system calibration, reduction of noise and the of distortion of underwater captured images, searching for corresponding points of stereoscopic images using stereo-matching algorithms (dense and sparse), for points cloud generating and filtering.

Only after various calibration and survey tests carried out during the excavations envisaged in the project, the mastery of methods for an efficient acquisition of data has been achieved. The current development of the system has allowed generation of portions of digital models of real submerged scenes. A semi-automatic procedure for global registration of partial models is under development as a useful aid for the study and musealization of sites.