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]
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.