Single-pixel diffuser camera

TL;DR

This paper introduces a cost-effective single-pixel camera using a rotating diffuser instead of digital micro-mirrors, capable of high-dimensional and hyperspectral imaging with low sampling ratios.

Contribution

It proposes a novel diffuser-assisted design for single-pixel cameras, enabling hyperspectral imaging and reducing costs compared to traditional DMD-based systems.

Findings

Achieved 8.8% sampling ratio for image reconstruction

Demonstrated hyperspectral imaging with line array detection

Presented a cost-effective approach for high-dimensional imaging

Abstract

We present a compact, diffuser-assisted, single-pixel computational camera. A rotating ground glass diffuser is adopted, in preference to a commonly used digital micro-mirror device (DMD), to encode a two-dimensional (2D) image into single-pixel signals. We retrieve images with an 8.8% sampling ratio after the calibration of the pseudo-random pattern of the diffuser under incoherent illumination. Furthermore, we demonstrate hyperspectral imaging with line array detection by adding a diffraction grating. The implementation results in a cost-effective single-pixel camera for high-dimensional imaging, with potential for imaging in non-visible wavebands.