MULTISCALE DOCUMENTATION AND MONITORING OF L’AQUILA HISTORICALCENTRE USING UAV PHOTOGRAMMETRY

Abstract. Nowadays geomatic techniques can guarantee not only a precise and accurate survey for the documentation of our historical heritage but also a solution to monitor its behaviour over time after, for example, a catastrophic event (earthquakes, landslides, ecc). Europe is trying to move towards harmonized actions to store information on cultural heritage (MIBAC with the ICCS forms, English heritage with the MIDAS scheme, etc) but it would be important to provide standardized methods in order to perform measuring operations to collect certified metric data. The final result could be a database to support the entire management of the cultural heritage and also a checklist of “what to do” and “when to do it”. The wide range of geomatic techniques provides many solutions to acquire, to organize and to manage data at a multiscale level: high resolution satellite images can provide information in a short time during the “early emergency” while UAV photogrammetry and laser scanning can provide digital high resolution 3D models of buildings, ortophotos of roofs and facades and so on. This paper presents some multiscale survey case studies using UAV photogrammetry: from a minor historical village (Aielli) to the centre of L’Aquila (Santa Maria di Collemaggio Church) from the post-emergency to now. This choice has been taken not only to present how geomatics is an effective science for modelling but also to present a complete and reliable way to perform conservation and/or restoration through precise monitoring techniques, as shown in the third case study.

[1]  D. Lague,et al.  Accurate 3D comparison of complex topography with terrestrial laser scanner: Application to the Rangitikei canyon (N-Z) , 2013, 1302.1183.

[2]  OCCLUSION DETECTION IN DIGITAL IMAGES THROUGH BAYESIAN NETWORKS , 2010 .

[3]  M. Crosetto,et al.  Deformation measurement using terrestrial laser scanning data and least squares 3D surface matching , 2008 .

[4]  Clive S. Fraser,et al.  Digital camera self-calibration , 1997 .

[5]  Fabio Remondino DETECTORS AND DESCRIPTORS FOR PHOTOGRAMMETRIC APPLICATIONS , 2006 .

[6]  D. Petley,et al.  Terrestrial laser scanning for monitoring the process of hard rock coastal cliff erosion , 2005, Quarterly Journal of Engineering Geology and Hydrogeology.

[7]  M. Westoby,et al.  ‘Structure-from-Motion’ photogrammetry: A low-cost, effective tool for geoscience applications , 2012 .

[8]  Joachim Höhle,et al.  Photogrammetric Measurements in Oblique Aerial Images , 2008 .

[9]  D. Dominici,et al.  UAV photogrammetry in the post-earthquake scenario: case studies in L'Aquila , 2017 .

[10]  F. Nex,et al.  OBLIQUE MULTI-CAMERA SYSTEMS - ORIENTATION AND DENSE MATCHING ISSUES , 2014 .

[11]  Roko Zarnic,et al.  Recommendations and Strategies for the Establishment of a Guideline for Monument Documentation Harmonized with the Existing European Standards and Codes , 2011 .

[12]  F. Nex,et al.  UAV for 3D mapping applications: a review , 2014 .

[13]  Dimitri Lague,et al.  3D Terrestrial LiDAR data classification of complex natural scenes using a multi-scale dimensionality criterion: applications in geomorphology , 2011, ArXiv.