Unmanned aerial vehicles are currently the most used solution for cultural heritage in the field of close range and low altitude acquisitions. This work shows data acquired by multitemporal and multispectral aerial surveys in the archaeological site of San Vincenzo al Volturno (Molise, Italy). The site is one of the most important medieval archaeological sites in the world. It is a monastic settlement that was particularly rich during the early Middle Ages, and is famous for its two full-frescoed crypts which represent a milestone in the history of medieval art. Thanks to the use of multispectral aerial photography at different times of the year, an area not accessible to archaeological excavation has been investigated. To avoid redundancy of information and reduce the number of data to be analysed, a method based on spectral and radiometric enhancement techniques combined with a selective principal component analysis was used for the identification of useful information. The combination of already published archaeological data and new remote sensing discoveries, has allowed to better define the situation of the abbey during the building phases of the 8th/9th century and 11th century, confirming and adding new data to the assumptions made by archaeologists.
CARE-GIS is a mapping application with Geographic Information Systems (GIS) functionalities that gives a geographic dimension to the important and valuable Corpus Architecturae Religiosae Europeae (CARE) dataset, useful not only for the scientific community but also for a larger public of non-specialists, who can easily access the CARE information from a map. The CARE-GIS application makes it possible to select and display CARE sites’ information (only for Italy, in the current version), by means of query forms, which allows one to cross several fields of the recorded data, to create thematic maps with the selected data. Moreover, the flexible nature of the application, by means of GeoJSON files and the QGIS software, allows one to add more layers, and map historical/archaeological data vs. other types of data, such as geomorphological ones or the analysis of the construction materials, or any other data related to the CARE sites. The displayed CARE data are extracted from the WikiCARE web pages by means of PHP “scraping” functions. A light-weight database is used by the CARE-GIS application, mainly to handle the connection to the WikiCARE website and fasten up the CARE sites’ search functions. The responsive CARE-GIS user interface allows accessing the maps from any kind of digital device, such as computers, tablets, and smartphones, making it a useful web application to get online information, when visiting the CARE mapped historical sites.
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