8 February 2017 Three-dimensional imaging of flat natural and cultural heritage objects by a Compton scattering modality
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Abstract
Characterization and interpretation of flat ancient material objects, such as those found in archaeology, paleoenvironments, paleontology, and cultural heritage, have remained a challenging task to perform by means of conventional x-ray tomography methods due to their anisotropic morphology and flattened geometry. To overcome the limitations of the mentioned methodologies for such samples, an imaging modality based on Compton scattering is proposed in this work. Classical x-ray tomography treats Compton scattering data as noise in the image formation process, while in Compton scattering tomography the conditions are set such that Compton data become the principal image contrasting agent. Under these conditions, we are able, first, to avoid relative rotations between the sample and the imaging setup, and second, to obtain three-dimensional data even when the object is supported by a dense material by exploiting backscattered photons. Mathematically this problem is addressed by means of a conical Radon transform and its inversion. The image formation process and object reconstruction model are presented. The feasibility of this methodology is supported by numerical simulations.
© 2017 SPIE and IS&T
Patricio Guerrero Prado, Patricio Guerrero Prado, Mai K. Nguyen, Mai K. Nguyen, Laurent Dumas, Laurent Dumas, Serge X. Cohen, Serge X. Cohen, } "Three-dimensional imaging of flat natural and cultural heritage objects by a Compton scattering modality," Journal of Electronic Imaging 26(1), 011026 (8 February 2017). https://doi.org/10.1117/1.JEI.26.1.011026 . Submission: Received: 1 July 2016; Accepted: 29 November 2016
Received: 1 July 2016; Accepted: 29 November 2016; Published: 8 February 2017
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