Evaluation of the Expected Data Quality in Laser Scanning Surveying of Archaeological Sites

Mattia Previtali, Lucia Díaz-Vilarino, Marco Scaioni, Ernesto Frías Nores

Abstract

Laser Scanning is nowadays more and more widespread for documentation of archaeological sites. To guarantee a proper survey, especially in the case of large archaeological site, several parameters need to be taken into consideration to guarantee the effectiveness of the documentation. In particular, these account for data accuracy, density and completeness. Generally, scan planning is empirically based on the personal experience of the operator. This paper presents a more controllable and reliable way for scan planning optimization. The presented methodology is based on a two-step approach. In the first step, starting from a preliminary plan of the site to be surveyed, a ray tracing algorithm is applied to a set of scan point candidates and finally the scan position optimization is based on a backtracking algorithm, considers a minimum scene coverage as stopping criterion. In the second step, starting from the previously defined positions, scans are simulated to derive the expected scan accuracy, density and completes. The presented methodology is tested on two archaeological sites the Grandi Horrea of Ostia (Italy) and the Basilica di Massenzio in Rome (Italy).

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IMEKO-TC4-METROARCHAEO-2019-4.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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