Single Shot Digital Holography Using Iterative Reconstruction with Alternating Updates of Amplitude and Phase

TL;DR

This paper introduces an iterative reconstruction method with alternating updates for single shot digital holography, enhancing amplitude and phase recovery, especially in low-amplitude regions, without phase unwrapping.

Contribution

The proposed approach allows separate priors for amplitude and phase, improves phase reconstruction in low-amplitude areas, and eliminates the need for phase unwrapping in digital holography.

Findings

Reduces noise in reconstructed images

Resolves finer features in holograms

Improves phase reconstruction accuracy

Abstract

We present an image recovery approach to improve amplitude and phase reconstruction from single shot digital holograms, using iterative reconstruction with alternating updates. This approach allows the flexibility to apply different priors to amplitude and phase, improves phase reconstruction in image areas with low amplitudes, and does not require phase unwrapping for regularization. Phantom simulations and experimental measurements of a grating sample both demonstrate that the proposed method helps to reduce noise and resolve finer features. The improved image reconstruction from this technique will benefit the many applications of digital holography.