The effect of spatial transverse coherence property of a thermal source on Ghost imaging and Ghost imaging via compressive sampling

TL;DR

This paper investigates how the spatial transverse coherence of a thermal source affects ghost imaging and ghost imaging via compressive sampling, revealing that coherence length impacts image quality and signal-to-noise ratio differently in these methods.

Contribution

It provides a comparative analysis of GI and GICS under varying coherence conditions and discusses strategies to enhance GICS image quality and efficiency.

Findings

Decreased coherence length improves GICS image quality.

Increased coherence length reduces GI signal-to-noise ratio.

GICS offers potential for better image reconstruction with optimized coherence.

Abstract

Both ghost imaging (GI) and ghost imaging via compressive sampling (GICS) can nonlocally image an object. We report the influence of spatial transverse coherence property of a thermal source on GI and GICS and show that, using the same acquisition numbers, the signal-to-noise ratio (SNR) of images recovered by GI will be reduced while the quality of reconstructed images will be enhanced for GICS as the spatial transverse coherence lengths located on the object plane are decreased. Differences between GI and GICS, methods to further improve the quality and image extraction efficiency of GICS, and its potential applications are also discussed.