Abstract
The latest results obtained through photogrammetric restitution enhanced by GNSS (Global Navigation Satellite System) RTK (Real-Time Kinematic) survey achieved increased levels of accuracy. These survey solutions are used to rapidly obtain a detailed model with an excellent level of accuracy (centimetric) with cheaper equipment. However, the contour conditions are not always favorable for obtaining the best results in a simple way. The work presented in this paper shows the survey and the photogrammetric restitution of the Manfredonic Castle of Mussomeli in Sicily, developed as a part of the PON NEPTIS European Project, aimed at the valorization of Cultural Heritage (CH). This case is a typical example of a complex survey carried out in an impervious environment where traditional survey procedures are totally useless or require a longer amount of time and great effort if a high level of accuracy is requested. In this case, considering the natural conditions of the site, the only way to perform the task has been the use of photogrammetric restitution based on UAV (unmanned aerial vehicle) technologies and GNSS survey. The precision obtained from the results allowed us to create a geometric 3D reconstruction of the monumental complex of the castle for the valorization of the site, which was the main goal of the whole process. The procedure that is the focus of this work is a test of rapid 3D CH survey and documentation in an impervious environment.
Highlights
Topographic technologies and methodologies have always been necessary for the protection, safeguarding, and fruition of archaeological sites and monumental complexes, as well as for geological analysis for the purpose of hazard assessment [1]
In order to with verify the quality of the work, is necessary to compare theto obtained of the reconstruction other to the to survey of the granted an exhaustive level of accuracy the quality offollowed the work,approach it is necessary compare thecastle obtained accuracy of the reconstruction with in other similar results towards aim of the research, linked to as sharing
The process described in this paper shows an example of how it is possible to produce a survey
Summary
Topographic technologies and methodologies have always been necessary for the protection, safeguarding, and fruition of archaeological sites and monumental complexes, as well as for geological analysis for the purpose of hazard assessment [1] The use of these instruments encounters real difficulties in survey operations; these operations usually characterize monumental complexes where problematic access to places, the state of degradation of the structures, and difficulty identifying the ruins are typical elements of the operations in situ. The increasing diffusion of unmanned aerial vehicle (UAV) systems for many survey applications [4,5] has added fundamental value to photogrammetric solutions for Heritage 2019, 2 archaeological surveys. For operations, the complex orographic shapechallenge of the site,toand adverse natural conditions These difficulties contributed added value to the goal of this work
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