Team Members Participating:
Università degli Studi di Padova, Italy
The photogrammetry, GIS and visualizing project for the archaeological site of Nora (Sardinia) is the result of a partnership between 3DOM research group (Fondazione Bruno Kessler, Trento), the Cultural Heritage Department of the University of Padova and the Professional second level Master on “GIScience” of the University of Padova.
The aim of the project is mapping and visualizing the archaeological site of Nora, applying different scales of detail and different targets: the researchers, the administrators and the public users. The project is meant to offer different web tools for exploring, understanding and enjoying the site, by focusing on 3D modelling, semantic enrichment and the contextualization of digital records.
The site has been surveyed by a drone, capturing 2400 pictures and producing a digital model of the site. It has been used as a basemap for drawing the new map of the site, focusing on the accuracy of the new cartography.
Other different outputs has been used for different scales of visualizations and for different purposes. The point cloud is provided for the entire site, using Potree, an open source multi-resolution web renderer. It is suitable for navigating the entire peninsula and getting geometrical information (such as heights, profiles, volumes).
A system of bounding boxes helps to mark single monuments inside the city and at the same time it gives access to further information. Specifically it addresses to a second visualization tool, a web renderer of the 2.5D representation of the archaeological structures (so far, the Sanctuary of Aesculapius has been used as a test). The QGIS plugin “Qgis2threejs” allows to produce extrusions of a mapped feature, setting height values extracted from the point cloud. The result is a web model, ontologically connected to the GIS, that can be queried as a shapefile. Photogrammetric models of single archaeological records can be located in their own context and be displayed using 3D web renderers as Blend4web.
The project deals with new visualization tools in order to explore new approaches in archaeological research and in disseminating ancient history and art. Technologies and virtual realities can actually provide new fuel to the educational mission, supplying new and more complete points of view, and prompting curiosity in no-professional users.