One major limitation of 3D archaeological site reconstruction is the fact that archaeologists try to rebuild contexts almost always at the end of the research process: ... now that everything has been analysed and we might propose a "reconstruction"... This is a typical attitude that leaves to archaeological reconstruction mainly an aesthetics role definitively not involved in the research process. In this paper we report on our latest research work in capturing 3D geometrical information of heritage monuments. The work is illustrated through a case study from Tuscany, a small but spectacular Romanesque church close to the castle of San Giovanni d’Asso (Siena, Italy). Using terrestrial laser scanning (TLS) and image-based techniques we were able to create a complete 3D model of the interior and exterior of the church. The images were acquired with consumer-grade digital cameras (6 and 10 mega pixels) along with a small radio-controlled helicopter to capture details of the roof and the apse which was not visible from ground level. Decorations and small details were modeled in high-resolution with an automated image matching algorithm while the simpler geometries of the exterior were reconstructed through a semi-automated approach. TLS was employed for the interior of the church, which consists of a main floor above a very small crypt, the recording of which was complicated by a plethora of columns and arches. The 3D survey, representation and reconstruction of San Pietro in Villore should become a case study of scientific research addressed to test a simulation based open-space where it is possible in every moment to measure and compare historical evidence, stratigraphical relationship and other datasets but also where is possible to improve and upgrade the record in the future on the basis of new field work or post-processing. This approach should, therefore, allow us to achieve: •better understanding of analytical study of the building - stratigraphy, structural, architectural, stylistic also assisted by automatic extraction of cross-sections, longitudinal sections and prospects; •the interpretation of archaeological features in deep association with their physical and cultural context exploring relationships across a landscape; •overcoming space and time sharing complex “objects” with other experts all around the world; •the demonstration (firstly addressed to archaeologists) that digital reconstruction is a complex exercise and projective interpretation and also is much more than a graphic reconstruction, is a simulation, that allows exploration of three-dimensional model perspectives through endless investigations and non-invasive documentation; •virtual reconstruction and simulation scenarios address to specialist as to the general public developing new tool to share but also preserve the memory of cultural heritage; •development of 3D archaeological thinking.

Campana, S., A., R., & M., S. (2009). 3d Modeling A Romanesque Church In Tuscany: Archaeological Aims And Geomatics Techniques. THE INTERNATIONAL ARCHIVES OF THE PHOTOGRAMMETRY, REMOTE SENSING AND SPATIAL INFORMATION SCIENCES, XXXVIII(5/W1).

3d Modeling A Romanesque Church In Tuscany: Archaeological Aims And Geomatics Techniques

CAMPANA, STEFANO;
2009

Abstract

One major limitation of 3D archaeological site reconstruction is the fact that archaeologists try to rebuild contexts almost always at the end of the research process: ... now that everything has been analysed and we might propose a "reconstruction"... This is a typical attitude that leaves to archaeological reconstruction mainly an aesthetics role definitively not involved in the research process. In this paper we report on our latest research work in capturing 3D geometrical information of heritage monuments. The work is illustrated through a case study from Tuscany, a small but spectacular Romanesque church close to the castle of San Giovanni d’Asso (Siena, Italy). Using terrestrial laser scanning (TLS) and image-based techniques we were able to create a complete 3D model of the interior and exterior of the church. The images were acquired with consumer-grade digital cameras (6 and 10 mega pixels) along with a small radio-controlled helicopter to capture details of the roof and the apse which was not visible from ground level. Decorations and small details were modeled in high-resolution with an automated image matching algorithm while the simpler geometries of the exterior were reconstructed through a semi-automated approach. TLS was employed for the interior of the church, which consists of a main floor above a very small crypt, the recording of which was complicated by a plethora of columns and arches. The 3D survey, representation and reconstruction of San Pietro in Villore should become a case study of scientific research addressed to test a simulation based open-space where it is possible in every moment to measure and compare historical evidence, stratigraphical relationship and other datasets but also where is possible to improve and upgrade the record in the future on the basis of new field work or post-processing. This approach should, therefore, allow us to achieve: •better understanding of analytical study of the building - stratigraphy, structural, architectural, stylistic also assisted by automatic extraction of cross-sections, longitudinal sections and prospects; •the interpretation of archaeological features in deep association with their physical and cultural context exploring relationships across a landscape; •overcoming space and time sharing complex “objects” with other experts all around the world; •the demonstration (firstly addressed to archaeologists) that digital reconstruction is a complex exercise and projective interpretation and also is much more than a graphic reconstruction, is a simulation, that allows exploration of three-dimensional model perspectives through endless investigations and non-invasive documentation; •virtual reconstruction and simulation scenarios address to specialist as to the general public developing new tool to share but also preserve the memory of cultural heritage; •development of 3D archaeological thinking.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11365/6027
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