[HTML][HTML] Sculpting axial characteristics of incoherent imagers by hybridization methods

S Gopinath, ASJF Rajeswary, V Anand - Optics and Lasers in Engineering, 2024 - Elsevier
Axial resolving power (ARP) is one of the cornerstones of imaging systems. In conventional
imaging systems, changing ARP by changing the numerical aperture affects also lateral …

[HTML][HTML] Single-Shot 3D Incoherent Imaging Using Deterministic and Random Optical Fields with Lucy–Richardson–Rosen Algorithm

AP Ignatius Xavier, FG Arockiaraj, S Gopinath… - Photonics, 2023 - mdpi.com
Coded aperture 3D imaging techniques have been rapidly evolving in recent years. The two
main directions of evolution are in aperture engineering to generate the optimal optical field …

Lensless computationally defined confocal incoherent imaging with a Fresnel zone plane as coded aperture

J Chen, F Wang, Y Li, X Zhang, K Yao, Z Guan, X Liu - Optics Letters, 2023 - opg.optica.org
We present a Fresnel zone plate (FZP) mask-based system for single-shot lensless confocal
imaging. The system uses an FZP as coded aperture, which allows each point source to cast …

[HTML][HTML] Thermal Image Super-Resolution Based on Lightweight Dynamic Attention Network for Infrared Sensors

H Zhang, Y Hu, M Yan - Sensors, 2023 - mdpi.com
Infrared sensors capture infrared rays radiated by objects to form thermal images. They have
a steady ability to penetrate smoke and fog, and are widely used in security monitoring …

[HTML][HTML] Development of adaptive point-spread function estimation method in various scintillation detector thickness for X-ray imaging

BK Cha, Y Lee, K Kim - Sensors, 2023 - mdpi.com
An indirect conversion X-ray detector uses a scintillator that utilizes the proportionality of the
intensity of incident radiation to the amount of visible light emitted. A thicker scintillator …

[HTML][HTML] Self-wavefront interference using transverse splitting holography

A Bleahu, S Gopinath, T Kahro, SH Ng, K Kukli… - Results in Physics, 2023 - Elsevier
Manufacturing diffractive lenses with a high Numerical Aperture (NA) is a challenging task
due to limitations in lithography methods and the inverse relation between the width and the …

A Training-Free Plug-and-Play Watermark Framework for Stable Diffusion

G Zhang, L Wang, Y Su, AA Liu - arXiv preprint arXiv:2404.05607, 2024 - arxiv.org
Nowadays, the family of Stable Diffusion (SD) models has gained prominence for its high
quality outputs and scalability. This has also raised security concerns on social media, as …

Super-Resolution Correlating Optical Endoscopy

O Tamm, V Tiwari, S Gopinath, ASJF Rajesway… - IEEE …, 2024 - ieeexplore.ieee.org
Optical endoscopy is a widely used minimally invasive diagnostic tool for imaging internal
organs. The imaging resolution is defined by the numerical aperture of the objective lens. In …

Engineering axial resolution realtime and postrecording of incoherent holograms using hybridization techniques

S Gopinath, ASJF Rajeswary… - … Conference on Optical …, 2024 - spiedigitallibrary.org
In incoherent digital holography (IDH) and in any imaging technique, the lateral and axial
resolutions are intertwined and consequently changing one characteristic affects the other …

[HTML][HTML] CCE Journal

AS Melnychenko - kvt-journal.org.ua
Methods. Research and analytics are used for processing found literature on the topic to
substantiate the main approaches and best practices for the solution of the texture missing …