Examinando por Autor "Ortega-Alvarado, Lidia M."
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Ítem Accessing interactively the spatio-temporal data-model of an archaeological site through its 3D virtual reconstruction(Elsevier, 2022-09) Calzado-Martínez, Alberto; García-Fernández, Ángel-Luis; Ortega-Alvarado, Lidia M.Information and communication technologies are increasingly used in all archaeological processes. However, archaeologists sometimes consider them as intrusive, too far from the traditional work methodology and even a hindrance. In this article we propose a framework to allow natural and therefore intuitive access to the archaeological record. The information retrieval process is carried out through a three-dimensional virtual reconstruction of the archaeological site. In this system, navigation and interaction with the three-dimensional elements of the environment triggers database queries. To achieve such functionality, a client-server architecture is designed in which the server maintains a spatio-temporal database with heterogeneous information, including the 3D models of the finds. To do this, a virtual replica of the site is created considering spatial restrictions and topological relationships among the finds.Ítem Integrated and interactive 4D system for archaeological stratigraphy(Springer, 2022-09-27) Ortega-Alvarado, Lidia M.; García-Fernández, Ángel-Luis; Conde-Rodríguez, Francisco; Jurado-Rodríguez, Juan M.The digitization of some of the processes carried out in an archaeological excavation is changing the way of working at the site. Today, new technologies coexist with traditional methodologies. The study of stratigraphy can combine drawings of profiles and plans, the Harris Matrix diagram, as well as digitized files that perform a complete record of the stratigraphic sequence. However, this information is usually unaggregated from the rest of the information system that makes up the archaeological record. In this paper we present an integrated software tool and the associated methodology to record, store, visualize and analyze the 3D stratigraphy of a site. The implementation uses spatial databases to store information of a heterogeneous nature and game engines for the visualization and interaction with this information. During the excavation process, the strata are scanned using the Tof technology, which is available in many smartphones. The resulting 3D model of the stratum, once uploaded to the software system, allows us to visualize the sequence of strata incorporating the findings into their original arrangement. Some additional tools, such as the scrollbar, help to perform a temporal analysis of the site. The result is a 4D interactive stratigraphy tool, which together with the Harris Matrix, complements the archaeological record and facilitates the work to archaeologists. This methodology also allows to speed up the on-site work and the subsequent analysis, while improving the user experience with the 3D archaeological site replica.