The plug-and-play priors (PnP) framework has been recently shown to achieve state-of-the-art results in regularized image reconstruction by leveraging a sophisticated denoiser within an iterative algorithm. In this paper, we propose a new online PnP algorithm for Fourier ptychographic microscopy (FPM) based on the fast iterative shrinkage/threshold algorithm (FISTA). Specifically, the proposed algorithm uses only a subset of measurements, which makes it scalable to a large set of measurements. We validate the algorithm by showing that it can lead to significant performance gains on both simulated and experimental data.
@article{arxiv.1811.00120,
title = {Regularized Fourier Ptychography using an Online Plug-and-Play Algorithm},
author = {Yu Sun and Shiqi Xu and Yunzhe Li and Lei Tian and Brendt Wohlberg and Ulugbek S. Kamilov},
journal= {arXiv preprint arXiv:1811.00120},
year = {2021}
}