Three-dimensional modeling using x-ray shape-from-silhouette,

Simioni E., Ratti F.; Calliari, Irene; Poletto, L.

doi:10.1364/AO.50.003282

We present the application of the shape-from-silhouette technique to reconstruct the three-dimensional profile of ancient handworks from their x-ray absorption images. The acquisition technique is similar to tomography, since the images are taken all around the object while it is rotated. Some reference points are placed on a small and light structure corotating with the object, and are acquired on the images for calibration and registration. The reconstruction algorithm gives finally the three-dimensional appearance of the handwork. We present the analysis of a bronze pendant of VT-VII century B.C. (Venetic area, Italy) completely hidden by corrosion products. The three-dimensional reconstruction shows that the pendant is a very elaborated piece, with two embraced figures that were completely invisible at the excavation. (

Titolo:	Three-dimensional modeling using x-ray shape-from-silhouette,
Autori:	Simioni E. , Ratti F. CALLIARI, IRENE Poletto L. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2011
Rivista:	APPLIED OPTICS
Abstract:	We present the application of the shape-from-silhouette technique to reconstruct the three-dimensional profile of ancient handworks from their x-ray absorption images. The acquisition technique is similar to tomography, since the images are taken all around the object while it is rotated. Some reference points are placed on a small and light structure corotating with the object, and are acquired on the images for calibration and registration. The reconstruction algorithm gives finally the three-dimensional appearance of the handwork. We present the analysis of a bronze pendant of VT-VII century B.C. (Venetic area, Italy) completely hidden by corrosion products. The three-dimensional reconstruction shows that the pendant is a very elaborated piece, with two embraced figures that were completely invisible at the excavation. (
Handle:	http://hdl.handle.net/11577/2483131
Appare nelle tipologie:	01.01 - Articolo in rivista

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