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Linear iterative near-field phase retrieval (LI-PR) for dual-energy x-ray imaging and material discrimination

Li, Heyang (Thomas); Kingston, Andrew M.; Myers, Glenn R.; Beching, Levi; Sheppard, Adrian


Near-field x-ray refraction (phase) contrast is unavoidable in many lab-based micro-CT imaging systems. Quantitative analysis of x-ray refraction (a.k.a. phase retrieval) is in general an under-constrained problem. Regularizing assumptions may not hold true for interesting samples; popular single-material methods are inappropriate for heterogeneous samples, leading to undesired blurring and/or over-sharpening. In this paper, we constrain and solve the phase-retrieval problem for heterogeneous...[Show more]

CollectionsANU Research Publications
Date published: 2017-10-26
Type: Journal article
Source: Journal of the Optical Society of America. A, Optics, image science, and vision
DOI: 10.1364/JOSAA.35.000A30


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