Recent advances in lensless imaging

V Boominathan, JT Robinson, L Waller… - Optica, 2021 - opg.optica.org
Lensless imaging provides opportunities to design imaging systems free from the constraints
imposed by traditional camera architectures. Due to advances in imaging hardware …

[HTML][HTML] A comprehensive survey on deep facial expression recognition: challenges, applications, and future guidelines

M Sajjad, FUM Ullah, M Ullah, G Christodoulou… - Alexandria Engineering …, 2023 - Elsevier
Facial expression recognition (FER) is an emerging and multifaceted research topic.
Applications of FER in healthcare, security, safe driving, and so forth have contributed to the …

Phlatcam: Designed phase-mask based thin lensless camera

V Boominathan, JK Adams, JT Robinson… - IEEE transactions on …, 2020 - ieeexplore.ieee.org
We demonstrate a versatile thin lensless camera with a designed phase-mask placed at sub-
2 mm from an imaging CMOS sensor. Using wave optics and phase retrieval methods, we …

Miniature color camera via flat hybrid meta-optics

S Pinilla, JE Fröch, SR Miri Rostami, V Katkovnik… - Science …, 2023 - science.org
The race for miniature color cameras using flat meta-optics has rapidly developed the end-to-
end design framework using neural networks. Although a large body of work has shown the …

Shiftaddnet: A hardware-inspired deep network

H You, X Chen, Y Zhang, C Li, S Li… - Advances in …, 2020 - proceedings.neurips.cc
Multiplication (eg, convolution) is arguably a cornerstone of modern deep neural networks
(DNNs). However, intensive multiplications cause expensive resource costs that challenge …

Image restoration for under-display camera

Y Zhou, D Ren, N Emerton, S Lim… - Proceedings of the …, 2021 - openaccess.thecvf.com
The new trend of full-screen devices encourages us to position a camera behind a screen.
Removing the bezel and centralizing the camera under the screen brings larger display-to …

Hybrid diffractive optics design via hardware-in-the-loop methodology for achromatic extended-depth-of-field imaging

S Pinilla, SR Miri Rostami, I Shevkunov, V Katkovnik… - Optics …, 2022 - opg.optica.org
End-to-end optimization of diffractive optical elements (DOEs) profile through a digital
differentiable model combined with computational imaging have gained an increasing …

Robust reconstruction with deep learning to handle model mismatch in lensless imaging

T Zeng, EY Lam - IEEE Transactions on Computational …, 2021 - ieeexplore.ieee.org
Mask-based lensless imaging is an emerging imaging modality, which replaces the lenses
with optical elements and makes use of computation to reconstruct images from the …

Neuromorphic imaging with density-based spatiotemporal denoising

P Zhang, Z Ge, L Song, EY Lam - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
Bio-inspired neuromorphic cameras asynchronously record visual information of dynamic
scenes by discrete events. Due to the high sampling rate, they are capable of fast motion …

Deep learning-based video stream reconstruction in mass-production diffractive optical systems

V Evdokimova, M Petrov, M Klyueva, E Zybin… - Computer …, 2021 - ui.adsabs.harvard.edu
Many recent studies have focused on develo** image reconstruction algorithms in optical
systems based on flat optics. These studies demonstrate the feasibility of applying a …