We demonstrate live-updating ptychographic reconstruction with ePIE, an iterative ptychography method, during ongoing data acquisition. The reconstruction starts with a small subset of the total data, and as the acquisition proceeds the data used for reconstruction is extended. This creates a live-updating view of object and illumination that allows monitoring the ongoing experiment and adjusting parameters with quick turn-around. This is particularly advantageous for long-running acquisitions. We show that such a gradual reconstruction yields interpretable results already with a small subset of the data. We show simulated live processing with various scan patterns, parallelized reconstruction, and real-world live processing at the hard X-ray ptychographic nanoanalytical microscope PtyNAMi at the PETRA III beamline.
@article{arxiv.2308.10674,
title = {Live Iterative Ptychography},
author = {Dieter Weber and Simeon Ehrig and Andreas Schropp and Alexander Clausen and Silvio Achilles and Nico Hoffmann and Michael Bussmann and Rafal Dunin-Borkowski and Christian G. Schroer},
journal= {arXiv preprint arXiv:2308.10674},
year = {2024}
}