Introduction to Fourier ptychography

[@nikolaiturcan6963]

A very technical topic and an elegantly simple explanation! Hats-off

[@TX0486]

Amazing Inspiring

[@takiyaazrin7562]

Great. I also dream of studying in Duke

[@choono3891]

Thanks for sharing! Very good lecture to learn ptychography. Could you tell me the relationship between the extent of the overlap and the results?

[@dukemicroscopes]

Great question! This topic is still under investigation by a number of research groups. The short answer is, around 60-70% overlap works very well, if you are ok with such measurement redundancy. 50% overlap is near the limit to get acceptable results for general samples, and then it is possible to use even less overlap if one applies prior knowledge about the sample (i.e., constraints their search to a subset of possible samples)

[@nvmvel]

Are you also working on integrating FPM and deep learning ? I m working on FPM reconstruction using GAN networks

[@dukemicroscopes]

Yes we have worked on that a bit in the past. In the paper below, we integrated an untrained convolutional neural network as a "deep image prior" to help improve our FP reconstruction results (for the 3D imaging case). In the second link below, we used a machine learning framework to optimize the LED pattern within our FP microscope. A GAN approach sounds interesting! opg.optica.org/oe/fulltext.cfm?uri=oe-28-9-12872&id=430210 opg.optica.org/boe/fulltext.cfm?uri=boe-10-12-6351&id=423327

[@TX0486]

Is there any open-source code FPM image processing?

[@ToynbeeJoshua-z5z]

Casper Mission

[@geetansh9295]

please provide the reference for video

[@dukemicroscopes]

Hi, I made this video, but it is based on number of different published papers. Below are some useful introduction and review papers that we have recently written about Fourier ptychography: K. C. Zhou et al, "Introduction to Fourier Ptychography: Part 1," Microscopy Today (2022) Link: bit.ly/3LdKQ7P P. C. Konda et al., "Fourier ptychography: current applications and future promises," Opt. Express 28, 9603-9630 (2020) Link: opg.optica.org/oe/fulltext.cfm?uri=oe-28-7-9603&id=429273

[@geetansh9295]

@@dukemicroscopes Very nice video. Thankyou so much