Shape-from-silhouette for three-dimensional reconstruction from x-ray radiography

E. Simioni; F. Ratti; L. Poletto

doi:10.1117/12.888407

6 June 2011 Shape-from-silhouette for three-dimensional reconstruction from x-ray radiography

E. Simioni, F. Ratti, L. Poletto

Proceedings Volume 8084, O3A: Optics for Arts, Architecture, and Archaeology III; 80840I (2011) https://doi.org/10.1117/12.888407
Event: SPIE Optical Metrology, 2011, Munich, Germany

Abstract

We present the application of the shape-from-silhouette algorithm to reconstruct the 3D profile of handworks from a set of X-ray absorption images taken at different angles around the object. The acquisition technique is similar to tomography, but the number of images that are required to reconstruct the 3D appearance is very low compared to tomography, therefore the acquisition time is substantially reduced. Some reference points are placed on a structure corotating with the object and are acquired on the images for calibration and registration. The shape-from-silhouette algorithm gives finally the 3D appearance of the object. We present the analysis of a tin pendant from the Venetic area, VI century b.C., that was completely hidden by corrosion products and solid ground at the moment of the retrieval. The 3D reconstruction shows that the pendant is a very elaborated piece, with two embraced figures that were completely invisible before restoration.

Citation Download Citation

E. Simioni, F. Ratti, and L. Poletto "Shape-from-silhouette for three-dimensional reconstruction from x-ray radiography", Proc. SPIE 8084, O3A: Optics for Arts, Architecture, and Archaeology III, 80840I (6 June 2011); https://doi.org/10.1117/12.888407

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KEYWORDS

X-rays

3D acquisition

X-ray imaging

Tomography

3D modeling

Reconstruction algorithms

Radiography

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