Abstract
Abstract. The area of the “Foro Emiliano”, the current “Piazza del Municipio” in the coastal town of Terracina in southern Latium, consists of an articulated group of building belonging to different historical moments. On the roman pavement of the forensic square stand out: a Roman theatre, the urban cathedral, medieval houses, a roman temple and recent buildings dating from the first half of the 20th century. Thanks to recent funding the “Soprintendenza Archeologia, Belle Arti e Paesaggio per le province di Frosinone, Latina e Rieti” has undertaken the demolition of some modern houses insisting on the theatre’s porticus post scaenam and began an excavation of the entirely preserved cavea of the Roman theatre building. These interventions of urban archaeology were taken as an opportunity to plan an impressive 3D survey of the historic center, aiming: on one side at monitoring demolition and excavation work, offering a cartographic base for valorization projects, and on the other at the investigation of a vast monumental area. This paper analyses in detail the phases of integration, alignment, filtering and post processing of the acquired data, showing with evidence how the integration of active and passive sensors is the best approach in similar scenario.
Highlights
Due to the events dating back to the last World War, a large area of the historical city center of Terracina was seriously damaged
If we consider the built heritage so far brought to light in the Piazza del Municipio in Terracina, and the areas not yet affected by archaeological survey, the extraordinary opportunity available in the field of study and enhancement of historical building is manifested
The integration of active sensors with noticeably different range rates has made it possible to obtain higher resolutions where it was strictly required, and smaller resolutions to map the context in which the archaeological area was located
Summary
Due to the events dating back to the last World War, a large area of the historical city center of Terracina was seriously damaged. After rubble’s evacuation and leveling, and the construction of some containment walls and pedestrian walkways, no major intervention affected the area touched by the war destruction (Coppola, 1984) This sequence of events has led to a very rare circumstance for a center characterized by life continuity: the elimination of part of the post-ancient buildings that normally seals and makes the historical events of previous eras scarcely probable. If we consider the built heritage so far brought to light in the Piazza del Municipio in Terracina, and the areas not yet affected by archaeological survey, the extraordinary opportunity available in the field of study and enhancement of historical building is manifested Such opportunity became the base for the intervention recently undertaken, and not yet concluded, by the Soprintendenza (SABAP Lazio). Since this kind of approach to urban areas and built heritage could be defined fruitful and inescapable (Barrile et al, 2015; Remondino et al, 2014), in a scenario of constant innovation of sensors and processing software, the application and validation of procedures aimed at defining new quality standards is becoming a priority (Blais, 2004)
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