Acknowledgments

i3D was designed and developed by Enrico Gobbetti at the Center for Advanced Studies, Research, and Development in Sardinia (CRS4), Cagliari, Italy, with help from Jean-Francis Balaguer. The work is now continued by Jean-Francis Balaguer at CERN, Geneva, Switzerland. The Virtual Sardinia processing tools have been developed by Enrico Gobbetti and Andrea Leone at CRS4. WebLive and WebShow have been developed by Francesco Benevento at CRS4. The satellite images and elevation data used in this work were provided by the University of Cagliari, "Scienze della Terra" department.

Research and development described in this paper have been carried out with the financial contribution of Sardinia Regional Authorities.