Single-shot thermal ghost imaging using wavelength-division multiplexing

TL;DR

This paper introduces a single-shot thermal ghost imaging method using wavelength-division multiplexing, enabling rapid scene reconstruction from a single measurement, thus suitable for dynamic imaging applications.

Contribution

The paper presents a novel single-shot thermal ghost imaging scheme that employs wavelength-division multiplexing to generate multiple patterns simultaneously, significantly reducing acquisition time.

Findings

Achieves rapid scene reconstruction from a single measurement

Enables imaging of dynamic scenes with high speed

Uses broadband light modulation for pattern generation

Abstract

Ghost imaging (GI) is a potential imaging technique that reconstructs the target scene from its correlated measurements with a sequential of patterns. Restricted by the multi-shot principle, GI usually requires long acquisition time and is limited in observation of dynamic scenes. To handle this problem, this paper proposes a single-shot thermal ghost imaging scheme via wavelength-division multiplexing technique. Specifically, we generate thousands of patterns simultaneously by modulating a broadband light source with a wavelength dependent diffuser. These patterns carry the scene's spatial information and then the correlated measurements are coupled into a spectrometer for the final reconstruction. This technique accelerates the ghost imaging speed significantly and promotes the applications in dynamic ghost imaging.