The research expedition of the CNR-ITABC in the archaeological site of Umm Al-Rasas, near Madaba (Jordan) was partially supported by the Italian Foreign Ministry. It started in 2013 and was mainly focused on the 3D documentation of two Byzantine churches with magnificent floor mosaics, dedicated to Saint Stephen and Bishop Sergius respectively. To improve the analysis of the archaeological structures, different investigation techniques were used and reciprocally integrated, in an effort to create geometric models enabling the interpretation of data related to the masonry and floor mosaics, as well as to the documentation of the archaeological area. In order to facilitate handling and mobility, lightweight tools were chosen and Micro Photogrammetry and Close Range Photogrammetry methods were applied. A correct description of the floor warp was achieved thanks to laser scanner techniques and the resulting geometric data were integrated with the chromatic data coming from photogrammetry, obtaining a 3D restitution of the two adjacent structures and a metric and spatial analysis of their morphological features. New devices, specifically designed for the project, helped to solve some practical problems that the survey operations had to cope with during the fieldwork. This paper illustrates the results of the survey, which will be useful to develop restoration projects in order to make the whole archaeological site attractive to tourists.
La spedizione di ricerca del CNR-ITABC nel sito archeologico di Umm Al-Rasas, vicino a Madaba (Giordania) è stata parzialmente sostenuta dal Ministero degli Esteri italiano. È iniziato nel 2013 e si è concentrato principalmente sulla documentazione 3D di due chiese bizantine con magnifici mosaici pavimentali, rispettivamente dedicati a Santo Stefano e al Vescovo Sergio. Per migliorare l'analisi delle strutture archeologiche, sono state utilizzate diverse tecniche di indagine e reciprocamente integrate, nel tentativo di creare modelli geometrici che consentano l'interpretazione dei dati relativi alla muratura e ai mosaici pavimentali, nonché alla documentazione dell'area archeologica. Per facilitare la manipolazione e la mobilità, sono stati scelti strumenti leggeri e sono stati applicati metodi di Micro Photogrammetry e Close Range Photogrammetry. Una corretta descrizione dell'ordito del pavimento è stata ottenuta grazie alle tecniche di laser scanner ed i dati geometrici risultanti sono stati integrati con i dati cromatici provenienti dalla fotogrammetria, ottenendo una restituzione 3D delle due strutture adiacenti e un'analisi metrica e spaziale delle loro caratteristiche morfologiche. Nuovi dispositivi, progettati specificamente per il progetto, hanno contribuito a risolvere alcuni problemi pratici che le operazioni di rilievo hanno dovuto affrontare durante il lavoro sul campo. Questo lavoro illustra i risultati dell'indagine, che saranno utili per sviluppare progetti di restauro al fine di rendere l'intero sito archeologico attrattivo per i turisti.
Tecniche di documentazione dei tappeti musivi del sito archeologico di Umm Al-Rasas Kastron Mefaa (Giordania)
2017
Abstract
The research expedition of the CNR-ITABC in the archaeological site of Umm Al-Rasas, near Madaba (Jordan) was partially supported by the Italian Foreign Ministry. It started in 2013 and was mainly focused on the 3D documentation of two Byzantine churches with magnificent floor mosaics, dedicated to Saint Stephen and Bishop Sergius respectively. To improve the analysis of the archaeological structures, different investigation techniques were used and reciprocally integrated, in an effort to create geometric models enabling the interpretation of data related to the masonry and floor mosaics, as well as to the documentation of the archaeological area. In order to facilitate handling and mobility, lightweight tools were chosen and Micro Photogrammetry and Close Range Photogrammetry methods were applied. A correct description of the floor warp was achieved thanks to laser scanner techniques and the resulting geometric data were integrated with the chromatic data coming from photogrammetry, obtaining a 3D restitution of the two adjacent structures and a metric and spatial analysis of their morphological features. New devices, specifically designed for the project, helped to solve some practical problems that the survey operations had to cope with during the fieldwork. This paper illustrates the results of the survey, which will be useful to develop restoration projects in order to make the whole archaeological site attractive to tourists.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
