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Proceedings Paper

Virtualizing ancient Rome: 3D acquisition and modeling of a large plaster-of-Paris model of imperial Rome
Author(s): Gabriele Guidi; Bernard Frischer; Monica De Simone; Andrea Cioci; Alessandro Spinetti; Luca Carosso; Laura Loredana Micoli; Michele Russo; Tommaso Grasso
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Paper Abstract

Computer modeling through digital range images has been used for many applications, including 3D modeling of objects belonging to our cultural heritage. The scales involved range from small objects (e.g. pottery), to middle-sized works of art (statues, architectural decorations), up to very large structures (architectural and archaeological monuments). For any of these applications, suitable sensors and methodologies have been explored by different authors. The object to be modeled within this project is the "Plastico di Roma antica," a large plaster-of-Paris model of imperial Rome (16x17 meters) created in the last century. Its overall size therefore demands an acquisition approach typical of large structures, but it also is characterized extremely tiny details typical of small objects (houses are a few centimeters high; their doors, windows, etc. are smaller than 1 centimeter). This paper gives an account of the procedures followed for solving this "contradiction" and describes how a huge 3D model was acquired and generated by using a special metrology Laser Radar. The procedures for reorienting in a single reference system the huge point clouds obtained after each acquisition phase, thanks to the measurement of fixed redundant references, are described. The data set was split in smaller sub-areas 2 x 2 meters each for purposes of mesh editing. This subdivision was necessary owing to the huge number of points in each individual scan (50-60 millions). The final merge of the edited parts made it possible to create a single mesh. All these processes were made with software specifically designed for this project since no commercial package could be found that was suitable for managing such a large number of points. Preliminary models are presented. Finally, the significance of the project is discussed in terms of the overall project known as "Rome Reborn," of which the present acquisition is an important component.

Paper Details

Date Published: 17 January 2005
PDF: 15 pages
Proc. SPIE 5665, Videometrics VIII, 56650D (17 January 2005); doi: 10.1117/12.587355
Show Author Affiliations
Gabriele Guidi, Politecnico di Milano (Italy)
Bernard Frischer, Univ. of Virginia (United States)
Monica De Simone, Univ. of Virginia (United States)
Andrea Cioci, Univ. degli Studi di Firenze (Italy)
Alessandro Spinetti, Univ. degli Studi di Firenze (Italy)
Luca Carosso, Univ. degli Studi di Firenze (Italy)
Laura Loredana Micoli, Politecnico di Milano (Italy)
Michele Russo, Politecnico di Milano (Italy)
Tommaso Grasso, System Measurements Services (Italy)

Published in SPIE Proceedings Vol. 5665:
Videometrics VIII
J.-Angelo Beraldin; Sabry F. El-Hakim; Armin Gruen; James S. Walton, Editor(s)

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