The plug-and-play priors (PnP) framework has been recently shown to achieve state-of-the-art results in regularized image reconstruc- tion by leveraging a sophisticated denoiser within an iterative algo- rithm. 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 scal- able 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.
Y. Sun, Shiqi Xu, Yunzhe Li, Lei Tian, B. Wohlberg, and U. S. Kamilov, “Regularized Fourier Ptychography Using An Online Plug-and-play Algorithm.”