Analysis of Fourier ptychographic microscopy with half of the captured images

TL;DR

This paper analyzes Fourier ptychographic microscopy (FPM) using only half of the captured images, demonstrating that image resolution remains high with minimal contrast loss, especially for phase or amplitude-only objects.

Contribution

It introduces an analysis of FPM with reduced data acquisition, showing that high-quality images can be reconstructed with fewer images, reducing acquisition time.

Findings

Reconstructed images with half the data show no significant resolution loss.

Contrast reduction occurs but does not severely impact image quality.

Near phase-only or amplitude-only objects maintain high reconstruction quality with less data.

Abstract

Fourier ptychography microscopy (FPM) is a new computational imaging technique that can provide gigapixel images with both high resolution and a wide field of view (FOV). However, time consuming of the data-acquisition process is a critical issue. In this paper, we make an analysis on the FPM imaging system with half number of the captured images. Based on the image analysis of the conventional FPM system, we then compare the reconstructed images with different number of captured data. Simulation and experiment results show that the reconstructed image with half number captured data do not show obvious resolution degradation compared to that with all the captured data, except a contrast reduction. In particular in the case when the object is close to phase-only/amplitude only, the quality of the reconstructed image with half of the captured data is nearly as good as the one reconstructed with full data.