Articles by Giacomo Di Giacomo
La piattaforma 'Marmora Phrygiae'. Open data per la conoscenza delle cave di marmo della Frigia meridionale e per lo studio dei cantieri antichi di Hierapolis
Giacomo Di Giacomo, Giuseppe Scardozzi
Abstract
The ‘Marmora Phrygiae’ project deals with some of the main issues related to the study of ancient quarries and building sites with a systematic approach, integrating the skills of experts from different disciplines: archaeology, ancient topography, art history, architecture, geology, geophysics, chemistry, geochemistry, biology, remote sensing, computer science, and Roman law. This paper summarizes the main scientific results of the project and the computer techniques used for implementing the Marmora Phrygiae online geodatabase, a system aimed at data presentation on the web, sharing knowledge through Open Data. The Marmora Phrygiae database dynamically stores the results of archaeological research and archaeometric analyses in order to publish them online at the end of the project: after a registration process, free access to available data will be allowed. The same database is also interfaced to Geoserver, a web-oriented cartographic engine, in which the coordinates of each feature (monuments, quarries, artefacts, stone samples), acquired by a high-precision topographic GPS, are stored. This solution allowed acquiring important new data on the marble extractive district of Hierapolis, the organization of the urban building sites during the Roman Imperial age and the Early-Byzantine period, and their dynamics of supplying stone materials within the overall ancient marble extractive district of south-western Turkey.
«Archeologia e Calcolatori» 2016, 27, 153-178; doi: 10.19282/AC.27.2016.08
QuantumGIS per il monitoraggio e la conoscenza del patrimonio archeologico e ambientale dell’Area Marina Protetta di Porto Cesareo (Lecce, Italia)
Cristiano Alfonso, Giacomo Di Giacomo
Abstract
Morphological changes in the coastline are related to numerous natural factors of erosion and accumulation, in addition to human actions. These changes have their effects on the entire coastal landscape and, over time, they have left their mark on the territory, enabling us, with the help of archaeological analysis, to hypothesize the scenario of previous landscapes. In this project, we tested a multidisciplinary study of these phenomena, through an innovative system for the interpretation of the modern landscape, based on the diachronic reading of previous landscapes. A level of knowledge of this type implies the integrated management of a large amount of heterogeneous data. Datasets available for this project include information acquired through the use of instruments to scan the seabed as well as data from aerial and satellite platforms both historical and recent, as well as Lidar data. QuantumGIS has proved the most effective tool to manage all the data through their indexing. Geographical data has been stored in a geospatial database based on PostgreSQL with PostGIS extension. All the data acquired were managed through QuantumGIS thanks also to the acquisition of new information. When the project is completed, it will be possible to reconstruct the evolutionary dynamics that led to the current situation and also to predict, with relative accuracy, future scenarios. In this paper we are presenting the preliminary results of this study, focusing on the methodologies used and the results obtained.
QuantumGIS per la gestione dei dati dalla survey 2013 a Helawa nella piana di Erbil, Kurdistan, Iraq
Luca Peyronel, Daniele Bursich, Giacomo Di Giacomo
Abstract
The 2013 season of fieldwork of the Italian Archaeological Expedition in the Helawa/Aliawa Area (MAIPE-Missione Archeologica Italiana nella Piana di Erbil, Kurdistan) was conducted by the University IULM of Milan, with the cooperation of IBAM-CNR of Lecce and the Sapienza University of Rome. The investigation focused on a small part of the South-Western Erbil plain and included two main mounds, Helawa (South) and Aliawa (North). A complete topographic plan was created starting from the measurements taken with differential GPS (for DEM and GIS elaboration). The collection of materials on the surface enabled us to make a preliminary assessment of the main periods of occupation at the site, spanning from the Late Neolithic (Halaf and Ubaid periods, 6th millennium BC) to the Middle Assyrian period (13th-12th century BC). The project of acquisition of topographic and archaeological records from the intensive survey conducted on the site involved the use of open source tools. All data were organized in a GIS system based on QuantumGIS and metadata are now stored in a PostgreSQL/PostGIS database, allowing for the subsequent phases of mapping elaboration. The topographic work produced a complete archaeological space-map, with distribution of materials on the surface, sections of the site, a digital elevation model and all the data collected during the survey entered in a webGIS. This paper illustrates the state-of-the-art of this GIS project, and introduces future developments like the web data-entry interface written in PHP, and the webGIS based on GeoServer and GeoExplorer.
Sperimentazione di un sistema GIS cloud open source per la condivisione e la valorizzazione del patrimonio archeologico
Abstract
The ability to index and quickly retrieve heterogeneous information from a shared space, makes the cloud an extremely effective tool for the remote sharing of archaeological data. It becomes even more useful when there is a cartographic engine in the dashboard that can handle the geographic information in the cloud. The Laboratory of Ancient Topography, Archaeology and Remote Sensing of IBAM-CNR, is experimenting a GIS cloud entirely made by integrating a variety of resources with open source licence. The cloud platform of the system is implemented with the software own cloud, which, through a MySQL database server, implements the access control. A hyperlink in own cloud redirects users to the mapserver, which at this stage of development is QGIS server; the data entry is done through QGIS Desktop and a QGIS project allows users to enter data into a PostgreSQL db. Through this configuration, data entered from any desktop device are available immediately in the cloud. Testing of the system has already begun on Lecce and Taormina, where the creation of archaeological digital maps are in progress. These research activities are parts of more complex projects that also involve other agencies: the Department of Cultural Heritage, University of Salento for the Archaeological Map of Lecce, and the Department of Classical Studies, University of Messina and the Superintendence for Archaeological Heritage and Environment of the Province of Messina for the Archaeological Map of Taormina.
GIS cloud per l’archeologia. Strumenti open source per la gestione e condivisione dei dati
Giacomo Di Giacomo, Giuseppe Scardozzi
Abstract
Digital maps linked to GIS platforms are extremely effective tools for the knowledge of the archaeological heritage and its management. Currently available GIS cloud is very useful for the remote sharing of archaeological data, because it is able to index and quickly retrieve heterogeneous information from large databases. A cartographic engine embedded in the system makes the cloud more powerful and allows users to share geospatial archaeological data quickly on the web. This is very important in collaborative research projects and for dissemination. The Laboratory of Ancient Topography, Archaeology and Remote Sensing of IBAM CNR is experimenting an open source suite to create a fully working GIS in the cloud system. This suite is composed of different databases (MySQL, postgreSQL, postGIS), a cartographic engine and a web client (QGIS server, QGIS Web Client), and a http server (Apache Web Server), all embedded in the owncloud cloud system. The system is currently being tested for the realization of the digital archaeological maps of the cities of Lecce and Taormina, now in progress in cooperation with the University of Salento and Messina and the Archaeological Superintendence of Apulia Region and Messina Province.
«Archeologia e Calcolatori» 2014, 25, 93-112; doi: 10.19282/ac.25.2014.05
La cinta muraria di Hierapolis di Frigia: il geodatabase dei materiali di reimpiego come strumento di ricerca e conoscenza del monumento e della città
Immacolata Ditaranto, Giacomo Di Giacomo, Giuseppe Scardozzi, Laura Castrianni
Abstract
Despite the impressiveness of its remains, until 2008 the city walls of Hierapolis of Phrygia (4th century AD) were one of the lesser known monuments of the city. The preserved and reconstructed remains of the fortifications are about 2.1 km long and are characterized by the systematic reuse of many blocks and architectural materials from necropolises and monuments that were demolished at the time of the construction of the walls. The study and the topographical survey (using a differential GPS) of the city walls were employed along with the analysis and centimetric positioning of all the main reused architectural elements (1142 items), i.e. those which are easier to recognize and to trace back to the buildings from which they came. The fieldwork was carried out using a Tablet PC and a specially developed computer schedule to record the characteristics of the recycled materials and their location. The data were uploaded into a dedicated and specially developed geodatabase, aimed at managing information related to the heterogeneous materials reused, integrating the intrinsic characteristics of objects and their positions. In the geodatabase, every architectural element was catalogued so that spatial queries could be made to identify the existence of homogeneous materials and determine their positions along the walls; they are also correlated with their monuments of origin when this information is available.
«Archeologia e Calcolatori» 2010, 21, 93-126; doi: 10.19282/ac.21.2010.05
Motori cartografici open source per la ricerca archeologica: applicazioni a Hierapolis di Frigia (Turchia)
Giacomo Di Giacomo, Giuseppe Scardozzi
Abstract
In this paper we describe two Web-GIS open sources created by CNR IBAM, in cooperation with Italian Archaeological Mission at Hierapolis of Phrygia and the methods and techniques for the development of the two systems: the former for remote use of Cultural Heritage and the latter for cataloguing and analysing the Byzantine wall.
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