Quantum-inspired computational imaging

Y Altmann, S McLaughlin, MJ Padgett, VK Goyal… - Science, 2018 - science.org
BACKGROUND Imaging technologies, which extend human vision capabilities, are such a
natural part of our current everyday experience that we often take them for granted …

Dynamic low-light imaging with quanta image sensors

Y Chi, A Gnanasambandam, V Koltun… - Computer Vision–ECCV …, 2020 - Springer
Imaging in low light is difficult because the number of photons arriving at the sensor is low.
Imaging dynamic scenes in low-light environments is even more difficult because as the …

Review of quanta image sensors for ultralow-light imaging

J Ma, S Chan, ER Fossum - IEEE Transactions on Electron …, 2022 - ieeexplore.ieee.org
The quanta image sensor (QIS) is a photon-counting image sensor that has been
implemented using different electron devices, including impact ionization-gain devices, such …

Low-light demosaicking and denoising for small pixels using learned frequency selection

OA Elgendy, A Gnanasambandam… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Low-light imaging is a challenging task because of the excessive photon shot noise. Color
imaging in low-light is even more difficult because one needs to demosaick and denoise …

HDR imaging with quanta image sensors: Theoretical limits and optimal reconstruction

A Gnanasambandam, SH Chan - IEEE transactions on …, 2020 - ieeexplore.ieee.org
High dynamic range (HDR) imaging is one of the biggest achievements in modern
photography. Traditional solutions to HDR imaging are designed for and applied to CMOS …

What does a one-bit quanta image sensor offer?

SH Chan - IEEE Transactions on Computational Imaging, 2022 - ieeexplore.ieee.org
The one-bit quanta image sensor (QIS) is a photon-counting device that captures image
intensities using binary bits. Assuming that the analog voltage generated at the floating …

Image classification in the dark using quanta image sensors

A Gnanasambandam, SH Chan - … , Glasgow, UK, August 23–28, 2020 …, 2020 - Springer
State-of-the-art image classifiers are trained and tested using well-illuminated images.
These images are typically captured by CMOS image sensors with at least tens of photons …

[HTML][HTML] Photon-starved snapshot holography

Y Zhang, SH Chan, EY Lam - APL Photonics, 2023 - pubs.aip.org
Digital holography (DH) is a powerful imaging modality that is capable of capturing the
object wavefront information, making it very valuable for diverse scientific research …

Exposure-referred signal-to-noise ratio for digital image sensors

A Gnanasambandam, SH Chan - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
The signal-to-noise ratio (SNR) is a fundamental tool to measure the performance of an
image sensor. However, confusions sometimes arise between the two types of SNRs. The …

Megapixel photon-counting color imaging using quanta image sensor

A Gnanasambandam, O Elgendy, J Ma, SH Chan - Optics express, 2019 - opg.optica.org
Quanta Image Sensor (QIS) is a single-photon detector designed for extremely low light
imaging conditions. Majority of the existing QIS prototypes are monochrome based on single …