Imaging with SPADs and DMDs: Seeing through Diffraction-Photons
This addresses image quality issues for systems using SPADs and DMDs, but it appears incremental as it builds on existing methods to handle a specific bottleneck.
The paper tackled the problem of imaging degradation caused by diffraction-photons in SPAD-based systems due to low DMD contrast ratios, and it developed a joint illumination-deconvolution scheme that enabled the acquisition of intensity and depth images, with a proof-of-concept experiment demonstrating its viability.
This paper addresses the problem of imaging in the presence of diffraction-photons. Diffraction-photons arise from the low contrast ratio of DMDs ($\sim\,1000:1$), and very much degrade the quality of images captured by SPAD-based systems. Herein, a joint illumination-deconvolution scheme is designed to overcome diffraction-photons, enabling the acquisition of intensity and depth images. Additionally, a proof-of-concept experiment is conducted to demonstrate the viability of the designed scheme. It is shown that by co-designing the illumination and deconvolution phases of imaging, one can substantially overcome diffraction-photons.