Image Reconstruction & Calibration Strategies for Fourier Ptychographic Microscopy – A Brief Review

Fourier Ptychographic microscopy (FPM) which is a low-cost but among the high throughput techniques. The main aim of FPM is to increase the space bandwidth product (SBP). In a microscope, one may trade of either to have a large image with low resolution or a small image with high resolution this is commonly termed as SBP that stands for space bandwidth product and defined as a product between field of view (FoV) and bandwidth of images in frequency domain. Researchers have developed a Fourier ptychographic microscopy (FPM) by introducing hardware design and computational imaging methods that provide high resolution images and wide field for viewing the image. One of the methods is to place number of LEDs beneath the slice in microscope to accumulate the information. Therefore, this manuscript presents the fundamental concept of Ptychographic Fourier microscopy along with the state-of-the-art approaches and the analysis related to auto-calibration of LEDs. In addition to this, paper will give directions for upcoming researchers to execute the task easily.