Results 51 to 60 of about 1,437,467 (197)

s2ISM: A Comprehensive Approach for Uncompromised Super-Resolution and Optical Sectioning in Image Scanning Microscopy [PDF]

EPJ Web of Conferences
Image Scanning Microscopy (ISM) enables good signal-to-noise ratio (SNR), super-resolution and high information content imaging by leveraging array detection in a laser-scanning architecture. However, the SNR is still limited by the size of the detector,
Zunino Alessandro, Garrè Giacomo, Perego Eleonora, Zappone Sabrina, Donato Mattia, Vicidomini Giuseppe   +5 more
doaj   +1 more source

SPADs and SiPMs Arrays for Long-Range High-Speed Light Detection and Ranging (LiDAR)

Sensors, 2021
Light Detection and Ranging (LiDAR) is a 3D imaging technique, widely used in many applications such as augmented reality, automotive, machine vision, spacecraft navigation and landing.
Federica Villa, Fabio Severini, Francesca Madonini, Franco Zappa   +3 more
doaj   +1 more source

Custom-Technology Single-Photon Avalanche Diode Linear Detector Array for Underwater Depth Imaging

Sensors, 2021
We present an optical depth imaging system suitable for highly scattering underwater environments. The system used the time-correlated single-photon counting (TCSPC) technique and the time-of-flight approach to obtain depth profiles.
Aurora Maccarone, Giulia Acconcia, Ulrich Steinlehner, Ivan Labanca, Darryl Newborough, Ivan Rech, Gerald S. Buller   +6 more
doaj   +1 more source

Design of 16 × 16 Low-Timing-Jitter InGaAs/InP Single-Photon Avalanche Photodiode Array for LiDAR

IEEE Photonics Journal
The precise calibration of timing jitter in single-photon chips and LiDAR devices is critical for the development of high-precision LiDAR systems. This paper presents the design and fabrication of a double-diffused InGaAs/InP SAGCM single-photon ...
Yu Chang, Kai Qiao, Zefang Xu, Liyu Liu, Linmeng Xu, Ming Li, Fei Yin, Xing Wang   +7 more
doaj   +1 more source

High-resolution depth imaging with a small-scale SPAD array based on the temporal-spatial filter and intensity image guidance.

Optics Express, 2022
Currently single-photon avalanche diode (SPAD) arrays suffer from a small-scale pixel count, which makes it difficult to achieve high-resolution 3D imaging directly through themselves. We established a CCD camera-assisted SPAD array depth imaging system.
Yan Kang, Ruikai Xue, Xiaofang Wang, Tongyi Zhang, Fanxing Meng, Lifei Li, Wei Zhao   +6 more
semanticscholar   +1 more source

Fundamental limits to depth imaging with single-photon detector array sensors

Scientific Reports, 2023
Single-Photon Avalanche Detector (SPAD) arrays are a rapidly emerging technology. These multi-pixel sensors have single-photon sensitivities and pico-second temporal resolutions thus they can rapidly generate depth images with millimeter precision.
Stirling Scholes, Germán Mora-Martín, Feng Zhu, Istvan Gyongy, Phil Soan, Jonathan Leach   +5 more
doaj   +1 more source

A flexible compact readout circuit for SPAD arrays [PDF]

SPIE Proceedings, 2010
A compact readout circuit that can be integrated between individual single photon avalanche detectors (SPADs) is described. The circuit uses minimum sized transistors to both quench the avalanche process in the photodetector and integrate charge onto a capacitor to represent the number of detected photons.
Chitnis, Danial; id_orcid 0000-0003-0916-9921, Collins, Steve   +1 more
openaire   +3 more sources

Neuromorphic Optical Tracking and Imaging of Randomly Moving Targets Through Dynamic Dense Scattering Media

Advanced Science, EarlyView.
Vision begins not with images but with change: the retina fires only when something moves, handing the brain a stream of spikes. A neuromorphic imaging system adopts the same strategy—an event sensor that sees like the retina, a spiking network that thinks like the brain—to track and reconstruct fully randomly moving targets through tissue (phantom ...
Ning Zhang, Arto Nurmikko
wiley   +1 more source

An Interface Circuit With Gain Automatic Adjustment for SPAD Arrays

IEEE Journal of the Electron Devices Society
In this paper, a gain automatic adjustment interface circuit is proposed for the non-uniform breakdown voltage of single-photon avalanche diode (SPAD) arrays caused by process and materials.
Lixia Zheng, Weiqi Yao, Suhui Zhang, Peikun Wang, Jin Wu, Weifeng Sun   +5 more
doaj   +1 more source

Solid-State Pulsed Time-of-Flight 3-D Range Imaging Using CMOS SPAD Focal Plane Array Receiver and Block-Based Illumination Techniques

IEEE Photonics Journal, 2022
Full realization of a solid-state 3-D range imager based on the pulsed time-of-flight method is presented. The system uses block-based segmented illumination in the transmitter realized with a 16-element common anode laser diode bar.
Juha Kostamovaara, Sahba Jahromi, Lauri Hallman, Guoyong Duan, Jussi-Pekka Jansson, Pekka Keranen   +5 more
doaj   +1 more source