Ptychography Intensity Interferometry Imaging for Dynamic Distant Object

TL;DR

This paper demonstrates that ptychographic intensity interferometry imaging (PIII) can effectively image dynamic distant objects, even through fog, with minimal speckle patterns and iterations, overcoming previous phase retrieval challenges.

Contribution

The study introduces an experimental demonstration of PIII for dynamic objects, showing robustness to probe inaccuracies and fog conditions, advancing lensless imaging techniques.

Findings

Successful imaging of a moving object with only two speckle patterns per probe.

Requires only 10 to 20 iterations for image reconstruction.

Effective imaging through fog where conventional cameras fail.

Abstract

As a promising lensless imaging method for distance objects, intensity interferometry imaging (III) had been suffering from the unreliable phase retrieval process, hindering the development of III for decades. Recently, the introduction of the ptychographic detection in III overcame this challenge, and a method called ptychographic III (PIII) was proposed. We here experimentally demonstrate that PIII can image a dynamic distance object. A reasonable image for the moving object can be retrieved with only two speckle patterns for each probe, and only 10 to 20 iterations are needed. Meanwhile, PIII exhibits robust to the inaccurate information of the probe. Furthermore, PIII successfully recovers the image through a fog obfuscating the imaging light path, under which a conventional camera relying on lenses fails to provide a recognizable image.