A novel reconstruction technique for two-dimensional Bragg scatter imaging

James Webber; Eric L Miller

doi:10.1117/12.2589013

12 April 2021 A novel reconstruction technique for two-dimensional Bragg scatter imaging

James Webber, Eric L Miller

Proceedings Volume 11738, Anomaly Detection and Imaging with X-Rays (ADIX) VI; 1173809 (2021) https://doi.org/10.1117/12.2589013
Event: SPIE Defense + Commercial Sensing, 2021, Online Only

Abstract

Here we introduce a new reconstruction technique for two-dimensional Bragg Scattering Tomography (BST), based on the Radon transform models of (Webber, James W., and Eric L. Miller. "Bragg scattering tomography." arXiv preprint arXiv:2004.10961, 2020). Our method uses a combination of ideas from multibang control and microlocal analysis to construct an objective function which can regularize the BST artefacts, e.g., the boundary artefacts due to sharp cutoff in sinogram space, as observed in (Webber, James W., and Eric Todd Quinto. "Microlocal analysis of generalized Radon transforms from scattering tomography." arXiv preprint arXiv:2007.00208, 2020), and errors due to attenuation and Compton noise. We then go on to test our algorithm in a variety of Monte Carlo (MC) simulated examples of practical interest in airport baggage screening and threat detection.

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James Webber and Eric L Miller "A novel reconstruction technique for two-dimensional Bragg scatter imaging", Proc. SPIE 11738, Anomaly Detection and Imaging with X-Rays (ADIX) VI, 1173809 (12 April 2021); https://doi.org/10.1117/12.2589013

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KEYWORDS

Scattering

Tomography

Error analysis

Monte Carlo methods

Radon transform

Compton scattering

Computer simulations

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