Results 41 to 50 of about 173,553 (278)

An introduction to ghost imaging: quantum and classical [PDF]

open access: yes, 2017
Ghost imaging has been a subject of interest to the quantum optics community for the past 20 years. Initially seen as manifestation of quantum spookiness, it is now recognized as being implementable in both single- and many-photon number regimes.
Boyd, Robert W., Padgett, Miles J.
core   +1 more source

Learning Wavefront Coding for Extended Depth of Field Imaging [PDF]

open access: yes, 2020
Depth of field is an important factor of imaging systems that highly affects the quality of the acquired spatial information. Extended depth of field (EDoF) imaging is a challenging ill-posed problem and has been extensively addressed in the literature ...
Akpinar, Ugur   +4 more
core   +2 more sources

Analytical and simulation tools for optical camera communications

open access: yesComputer Communications, 2020
The use of LED-to-camera communication opens the door to a wide range of use cases and applications, with diverse requirements in terms of quality of service. However, while analytical models and simulation tools exist for all the major radio communication technologies, the only way of currently evaluating the performance of a network mechanism over ...
Duque, Alexis   +3 more
openaire   +3 more sources

Non-Line-of-Sight Optical Camera Communication in a Heterogeneous Reflective Background

open access: yesIEEE Photonics Journal, 2019
In the last few years, optical camera communication (OCC) has benefited from built-in CMOS image sensors in smart devices. OCC is now considered a candidate for incorporation into IEEE 802.15.7r1. A major study on OCC was conducted for line-of-sight (LOS)
Jenn-Kaie Lain   +2 more
doaj   +1 more source

xLED: Covert Data Exfiltration from Air-Gapped Networks via Router LEDs

open access: yes, 2017
In this paper we show how attackers can covertly leak data (e.g., encryption keys, passwords and files) from highly secure or air-gapped networks via the row of status LEDs that exists in networking equipment such as LAN switches and routers. Although it
Daidakulov, Andrey   +3 more
core   +1 more source

Single-shot compressed ultrafast photography: a review [PDF]

open access: yes, 2020
Compressed ultrafast photography (CUP) is a burgeoning single-shot computational imaging technique that provides an imaging speed as high as 10 trillion frames per second and a sequence depth of up to a few hundred frames.
Cao, Fengyan   +11 more
core  

Motion-Aware Optical Camera Communication With Event Cameras

open access: yesIEEE Robotics and Automation Letters
As the ubiquity of smart mobile devices continues to rise, Optical Camera Communication systems have gained more attention as a solution for efficient and private data streaming. This system utilizes optical cameras to receive data from digital screens via visible light. Despite their promise, most of them are hindered by dynamic factors such as screen
Hang Su   +3 more
openaire   +2 more sources

MIMO Architecture for Optical Camera Communications

open access: yesThe Journal of Korean Institute of Communications and Information Sciences, 2017
Compare with other communication system based RF technology, Optical Camera Communication (OCC) has limitation on data rate due to the low frame rate of camera. The limitation on data rate can be solved with multiple-input and multiple-output (MIMO) technology; and it is the final target of all researches on OCC.
Nam-Tuan Le, Yeong Min Jang
openaire   +2 more sources

Indoor Positioning Using Deep-Learning-Based Pedestrian Dead Reckoning and Optical Camera Communication

open access: yesIEEE Access, 2021
The need for an accurate indoor positioning system has rapidly increased with the development of large complex malls and underground spaces. As signals from the global positioning system cannot be received inside buildings, only approximate locations can
Soyoung Jeong, Jihyeon Min, Youngil Park
doaj   +1 more source

Cognitive Behavioral Therapy for Youth With Childhood‐Onset Lupus: A Randomized Clinical Trial

open access: yesArthritis Care &Research, EarlyView.
Objective Our objective was to determine the feasibility and acceptability of the Treatment and Education Approach for Childhood‐Onset Lupus (TEACH), a six‐session cognitive behavioral intervention addressing depressive, fatigue, and pain symptoms, delivered remotely to individual youth with lupus by a trained interventionist.
Natoshia R. Cunningham   +29 more
wiley   +1 more source

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