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Page 14 of 939 Results 131 - 140 of 9382

Lorena Centarti, Carla Ferreyra, Caterina Gabriella Guida, Marco Limongiello, Barbara Messina
Integrated survey for the modeling of complex environments.La Grotta di San Michele Arcangelo a Olevano sul Tusciano,Salerno

The possibility of integrating digital technologies facilitates the documentation and, consequently, the management of complex environments such as the Hypogean Heritage. The Grotta di San Michele Arcangelo, a natural cave located in the municipality of Olevano sul Tusciano, in the province of Salerno, is being selected as a case study to test the integration of different digital surveying technologies. Through the combined use of SLAM-based techniques, used for the acquisition of the interior space, and LiDAR-UAV techniques, for the exterior, an integrated point cloud was obtained from which accurate geometric information could be extracted, necessary for three-dimensional modeling of the analysed environment. The purpose was to provide the academic community with updated multidimensional information of the hypogean scenarios, defining good practices for their application. The database becomes an essential tool for the understanding, monitoring and management of these complex environments and also lends itself to actions of valorisation and promotion of virtual accessibility to this heritage.

Roberto Barni, Carlo Inglese
Survey and analysis of the Fossanova Abbey

The systematic study of Cistercian monastic complexes focuses on the Fossanova Abbey, presenting a unique challenge in Italian architecture. The lack of homogeneous and reliable documentation on the morphometric consistency of these structures, expressed through two-dimensional and three-dimensional models, has limited the completeness of historical-critical studies. By analyzing the floor plans and graphic materials, a significant discrepancy has been found compared to the actual structures, with regularization of axes and alignments that disregard vertical errors and offsets. To address this gap, an architectural survey methodology has been adopted, combining digital photogrammetry, 3D laser scanning, and other advanced technologies. This multidisciplinary approach enables the creation of reliable and coherent digital models that capture the formal, geometric, and chromatic aspects of the abbey, documenting diachronic changes and temporal stratification.

Emanuela Chiavoni, Francesca Porfiri, Gaia Lisa Tacchi
The ancient Stone Ship. Integrated investigations on the original morphology of the Tiber Island, between legend and material consistency

The present study, through a methodology of integrated representation and survey, constitutes a contribution aimed at preserving the memory of a site of great historical, cultural and landscape value, monitoring its evolution over time. It is an integrated investigation of the original conformation of the Tiber Island in Rome, in particular of the remaining ancient portion of the so-called Stone Ship. The research aimed to compare historical iconography with two- and three-dimensional models derived from acquisitions performed with current methodologies and instruments. Through the study of the proportions of the fragments still observable in situ, it was possible to hypothesise certain architectural conformations that could evoke the primitive form. In that manner, the traces that are still evident, analysed and studied, make it possible to grasp the material and immaterial information that is useful for an overall approach to the work.

Suset Barroso-Solares, Estefania Estalayo, Elvira Rodriguez-Gutierrez, Violeta Hurtado-Garcia, Ricardo Vicente-Rojas, Oscar Fadon, Julene Aramendia, Jose Carlos Coria-Noguera, Quentin Lemasson, Claire Pacheco, Angel Carmelo Prieto, Carlos Sanz-Minguez, Juan Manuel Madariaga, Javier Pinto
Multi-technique approach to unveil the composition, fabrication, and potential provenance of a unique pre-Roman glass collection (IV-I BC)

This work summarizes the results of a three-year project focused on the archaeometrical study of a collection of about one thousand pre-Roman glass beads found at the archaeological site of Pintia (Valladolid, Spain), located at the interior of Iberia. In addition to the morphological and contextual analysis of the entire collection, a representative set of 150 samples, including several unique and exquisite polychrome beads, have been studied in detail by diverse archaeometric techniques such as Raman spectroscopy, X-ray fluorescence, PIXE/PIGE, X-ray tomography, among others. The combined use of these techniques provided valuable data about the production processes of the polychrome beads. Remarkably, some previous conceptions about their fabrication have been modified, and evidence about their production in secondary workshops has been provided. Moreover, hints about the origin of the primary glasses employed in all the studied samples have been obtained, suggesting their origin was scattered between Egypt and Syria-Palestine.

Michele Russo, Luca James Senatore, Raffaella Giuliani, Rocco Bochicchio
Phygital sculptures for archaeological dissemination: The head of Sant’Elena

The construction of virtual and physical copies of statues is not new, but it still contains several elements to investigate. On the one hand, the pipeline for the definition of a reliable physical copy, in terms of morphometrics and material, and on the other hand, the optimization of the digital models for their virtual fruition while preserving the distinctive features. These two steps require experimentation and comparisons, allowing the processes to be validated to reach scientifically accurate results. The article, starting from the case study of the head of Sant'Elena preserved inside the Mausoleum of Sant'Elena, proposes the comparison of different processes of physical and digital 3D acquisition and reproduction of the work in order to expand its fruition both via virtual representation and for people with visual impairment.

Vincenzo Fioriti, Antonino Cataldo, Alessandro Colucci, Chiara Ormando, Fernando Saitta, Domenico Palumbo, Ivan Roselli
Processing of shaking table test data of a historic masonry structure by graph-based methods

A mockup representing a historic masonry vault was tested on the shaking table and finally brought to collapse. During the seismic test, a video was taken and then processed by the motion magnification algorithm to magnify the smallest displacements. Subsequently, each frame of the video was translated into a graph to be analyzed by means of the graph theory centrality measures. Some graph standard parameters showed a significant variation in their value along the video frames before collapse. Therefore, such parameters showed the potential to predict the collapse of the structure.

Sara Croci, Leila Es Sebar, Caterina Gori, Leonardo Iannucci, Emma Angelini, Sabrina Grassini
Preventive conservation plan for a group of bronze sculptures from the Gori Art Collection

This paper deals with a multi-analytical and long-term in-situ monitoring campaign for evaluating the state of conservation of some outdoor contemporary bronze sculptures of the environmental Gori Collection, at the Villa Fattoria di Celle, located in the municipality of Santomato, Pistoia, Italy. Digital twins of the Cavaliere and of one of the thirty-three figures of Katharsis have been made by means of 3D photogrammetry in order to characterize the artworks. On the same sculptures, the chemical composition of the corrosion patinas has been determined by Raman spectroscopy. Moreover, the protective effectiveness of the corrosion products layer has been assessed by means of electrochemical impedance spectroscopy. The analytical data obtained in the monitoring campaign, still in progress, are discussed as a function of the exposure time to outdoor environment of the works of art.

Jose Santiago Pozo Antonio, Teresa Rivas, Pablo Barreiro, Vera Caetano, Fernando Carrera, Lara Bacelar Alves
In situ characterization of prehistoric rock paintings: the Côa Valley (Portugal)

This paper draws on the study of the prehistoric art complex of the Côa Valley in north-east Portugal. Its main goal was to apply an in situ methodology for characterising prehistoric rock paintings. Thus, panels exhibiting red motifs were analysed by colour spectrophotometry and portable Raman spectroscopy. Motifs, crusts developed on the decorated surfaces and the backdrop stones have been analysed. Motifs from four sites within this archaeological complex were grouped considering their CIELAB and CIELCH parameters L*, a*, b*, C*ab and h due to their different colours. Raman spectroscopy showed that hematite is the predominant pigment in the motifs. Goethite, quartz and feldspars have also been identified in some motifs; their presence may reveal the use of ochre but may also come from the backdrop.

Beatrice Calosso, Marialuisa Mongelli, Sara Pettisano, Samuele Pierattini
Digitalization of Bernini’s drawing Tondo depicting St. Joseph with the baby Jesus. Increasing knowledge and monitoring surface cracks

The main goal of the study carried out by ENEA described in this paper has been to create a three-dimensional virtual model of a sanguine drawing by Bernini, useful in the definition of the conservation status of the artwork and in facilitating the medium and long-term monitoring of the damage, highlighted and measured using Photogrammetry technique. The show up details will help further in-depth analysis to better know the historical, material, and iconographic characteristics of this drawing, crossing scientific data with archival data.

Giorgio Saverio Senesi, Sara Mattiello, Vincenzo Palleschi, Bruno Cocciaro, Girolamo Fiorentino, Olga De Pascale
Handheld laser-induced breakdown spectroscopy, portable energy dispersive X-ray fluorescence spectroscopy and Graph Clustering applied to the identification and inner stratigraphy of archaeological metallic artifacts

Two advanced analytical techniques, i.e., non-destructive portable Energy Dispersive X-Ray Fluorescence (pED-XRF) and micro-destructive handheld laser-induced breakdown spectroscopy (hLIBS) supported by a Graph Clustering method have been applied to identify the elemental composition and inner stratigraphy of five copper and two iron alloy artifacts originated from various ancient graves in the area of Minervino Murge (Barletta, Andria, Trani - BAT), Apulia, Italy. The main elements detected by both techniques were Cu, Sn and Pb in copper alloys and Fe with minor amounts of Cu and Pb in iron ones, together with Al, Ca, Si, Mg and K feasibly originated from soil contamination, and the trace elements Sb and Zn. The pED-XRF spectra were distributed in three distinct clusters, whereas LIBS spectra were classified in four clusters.
These instruments have proved to be able to provide reproducible quantitative data in agreement with literature data, thus representing powerful means in outdoor archaeology and archaeometry campaigns.

Page 14 of 939 Results 131 - 140 of 9382