25 citations · 37 across the 8 of their papers we have counts for
9 papers
Fast implicit diffusive dark-field retrieval for single-exposure, single-mask x-ray imaging
Mario A. Beltran, David M. Paganin, Michelle K. Croughan +1
Complementary to conventional and phase X-ray radiography, dark-field imaging has become central in visualizing diffusive scattering signal due to the spatially-unresolved texture…
Revisiting neutron propagation-based phase contrast imaging and tomography: use of phase retrieval to amplify the effective degree of brilliance
David M. Paganin, Morten Sales, Peter M. Kadletz +4
Propagation-based neutron phase-contrast tomography was demonstrated using the ISIS pulsed spallation source. The proof-of-concept tomogram with Paganin-type phase-retrieval filter…
Translative lens-based full field coherent X-ray imaging
Carsten Detlefs, Mario A. Beltran, Jean-Pierre Guigay +1
We describe a full-field coherent imaging approach suitable for hard X-rays based on a classical (i.e. Galilean) X-ray microscope. The method combines a series of low-resolution im…
Aberrated dark-field imaging systems
Mario A. Beltran, David M. Paganin
We study generalized dark-field imaging systems. These are a subset of linear shift-invariant optical imaging systems, that exhibit arbitrary aberrations, and for which normally-in…
Nodal-line dynamics via exact polynomial solutions for coherent waves traversing aberrated imaging systems
David M. Paganin, Mario A. Beltran, Timothy C. Petersen
We obtain exact polynomial solutions for two-dimensional coherent complex scalar fields propagating through arbitrary aberrated shift-invariant linear imaging systems. These are us…
Phase-and-amplitude recovery from a single phase contrast image using partially spatially coherent X-ray radiation
Mario A. Beltran, David M. Paganin, Daniele Pelliccia
A simple method of phase-and-amplitude extraction is derived that corrects for image blurring induced by partially spatially coherent incident illumination using only a single inte…
Propagation of fully-coherent and partially-coherent complex scalar fields in aberration space
David M. Paganin, Timothy C. Petersen, Mario A. Beltran
We consider the propagation of both fully coherent and partially coherent complex scalar fields, through linear shift-invariant imaging systems. The state of such imaging systems i…
Extraction of depth moments by exploiting the partial coherence of radiation
M. A. Beltran, T. C. Petersen, M. J. Kitchen +1
We retrieve depth information (moments) of an object using partially coherent fields and defocus induced holographic contrast. Our analysis leads to a form of tomography that does…
Aberrations in shift-invariant linear optical imaging systems using partially coherent fields
Mario A. Beltran, Marcus J. Kitchen, T. Petersen +1
Here the role and influence of aberrations in optical imaging systems employing partially coherent complex scalar fields is studied. Imaging systems require aberrations to yield co…