Phase retrieval with Fourier-weighted projections.
In coherent lensless imaging, the presence of image sidelobes, which arise as a natural consequence of the finite nature of the detector array, was early recognized as a convergence issue for phase retrieval algorithms that rely on an object support constraint. To mitigate the problem of truncated far-field measurement, a controlled analytic continuation by means of an iterative transform algorithm with weighted projections is proposed and tested. This approach avoids the use of sidelobe reduction windows and achieves full-resolution reconstructions.
Guizar-Sicairos
Manuel
M
Department of Physics, University of Arkansas, Arkansas 72701, USA.
Fienup
James R
JR