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DOE OSTI · 22036637

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

Simioni, Emanuele·Ratti, Filippo·Calliari, Irene·Poletto, Luca
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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 VI-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.

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71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICSABSORPTIONALGORITHMSBRONZECALIBRATIONCORROSION PRODUCTSEXCAVATIONIMAGESSIMULATIONTHREE-DIMENSIONAL CALCULATIONSTOMOGRAPHYVISIBLE RADIATIONX RADIATION

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Simioni, Emanuele, Ratti, Filippo, Calliari, Irene, Poletto, Luca. 2011-07-01. Three-dimensional modeling using x-ray shape-from-silhouette. https://doi.org/10.1364/ao.50.003282

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