Three-dimensional reconstruction with x-ray shape-from-silhouette

E. Simioni; F. Ratti; I. Calliari; L. Poletto

doi:10.1117/12.861599

2 September 2010 Three-dimensional reconstruction with x-ray shape-from-silhouette

E. Simioni, F. Ratti, I. Calliari, L. Poletto

Proceedings Volume 7804, Developments in X-Ray Tomography VII; 78040X (2010) https://doi.org/10.1117/12.861599
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

Abstract

In the field of restoration of ancient handworks, X-ray tomography is a powerful method to reconstruct the internal structure of the object in non-invasive way. In some cases, such as small objects fully realized with hard metals and completely hidden by clay or products of oxidation, the tomography, although necessary to obtain the 3D appearance of the object, does not give any additional information on its internal monolithic structure. We present here the application of the shape-from-silhouette technique on X-ray images to reconstruct the 3D profile of handworks. The acquisition technique is similar to tomography, since several X-ray images are taken while the object is rotated. Some reference points are placed on a structure co-rotating 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 handwork. We present the analysis of a tin pendant of VI-VIII century b.C. (Venetian area) completely hidden by solid ground. The 3D reconstruction shows surprisingly 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, I. Calliari, and L. Poletto "Three-dimensional reconstruction with x-ray shape-from-silhouette", Proc. SPIE 7804, Developments in X-Ray Tomography VII, 78040X (2 September 2010); https://doi.org/10.1117/12.861599

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available