Results 31 to 40 of about 1,748,185 (181)

Combining Chrominance Features and Fast ICA for Noncontact Imaging Photoplethysmography

IEEE Access, 2020
Video-based noncontact detection of heart rate has a wide range of applications in the field of medicine and health. However, this method is susceptible to noise interference, making it difficult to effectively extract blood volume pulse (BVP) signals ...
Ken Cai, Hongwei Yue, Bohan Li, Weitong Chen, Wenhua Huang   +4 more
doaj   +1 more source

Video-rate or high-precision: A flexible range imaging camera [PDF]

, 2008
A range imaging camera produces an output similar to a digital photograph, but every pixel in the image contains distance information as well as intensity.
Dorrington, Adrian A., Payne, Andrew D., Conroy, Richard M., Andrew D. Payne, Jongenelen, Adrian P.P., Adrian A. Dorrington, Adrian P. P. Jongenelen, Carnegie, Dale A., Michael J. Cree, John P. Godbaz, Godbaz, John Peter, Dale A. Carnegie, Richard M. Conroy, Cree, Michael J.   +13 more
core   +1 more source

Correction: Using imaging photoplethysmography for heart rate estimation in non-human primates. [PDF]

PLoS ONE, 2019
[This corrects the article DOI: 10.1371/journal.pone.0202581.].
Anton M Unakafov, Sebastian Möller, Igor Kagan, Alexander Gail, Stefan Treue, Fred Wolf   +5 more
doaj   +1 more source

Oligoethylene Glycol Side‐Chain Engineering of Y6‐Derived Nonfullerene Acceptors for Thermally Induced Spontaneous Pseudo‐Planar Heterojunction Organic Photodetectors

Advanced Functional Materials, EarlyView.
OEG‐functionalized Y6‐derived acceptors induce thermally driven vertical phase separation, enabling pseudo‐planar heterojunction organic photodetectors. The resulting PM6:YTEG‐4F and PM6:YTEG‐4Cl organic photodetectors suppress dark current density by approximately 260‐fold and 210‐fold, respectively, while maintaining efficient photoresponse ...
Se Jeong Park, Sang Young Jeong, Yunji Eom, Yelim Kang, Yeonsu Choi, Seunghyun Rhee, Bo Ram Lee, Bong Joo Kang, Nam Joong Jeon, Jae Won Shim, Han Young Woo, Seo‐Jin Ko   +11 more
wiley   +1 more source

Soft, Multi‐Wavelength Photoplethysmography Enables Reliable Neonatal Blood Pressure Monitoring Via Error Stratification

Advanced Science, EarlyView.
A soft hybrid multi‐wavelength PPG wearable acquires neonatal signals. Synchronized PPG and invasive ABP data are segmented into fixed windows. A 1D‐EfficientNet model predicts segment‐level SBP and DBP. Model performance is examined with retrospective subgroup analysis across acquisition conditions.
Wenqi Shi, Lanlan Mi, Jiarong Chen, Biao Liu, Min Wang, Zisheng Dai, Bin Liu, Ruize Gao, Yunfeng Lin, Weiwei Guo, Guoxing Wang, Wenyi Luo, Cheng Chen   +12 more
wiley   +1 more source

Noninvasive molecular imaging of neuroinflammation [PDF]

, 2011
Inflammation is a highly dynamic and complex adaptive process to preserve and restore tissue homeostasis. Originally viewed as an immune-privileged organ, the central nervous system (CNS) is now recognized to have a constant interplay with the innate and
Jacobs, A.H. (Andreas), Bertrand Tavitian, Windhorst, A.D., Lammertsma, A.A., Andreas H Jacobs, Jacobs, A.H., Jacobs, Andreas H., Tavitian, B. (Bertrand), INMiND consortium, Tavitian, Bertrand, Boutin, Herve; id_orcid, Planas, Anna M., Tavitian, B., et al., HENEKA, Michael, Jacobs, Andreas H   +15 more
core   +1 more source

Face Biometric Spoof Detection Method Using a Remote Photoplethysmography Signal

, 2022
Spoofing attacks in face recognition systems are easy because faces are always exposed. Various remote photoplethysmography-based methods to detect face spoofing have been developed. However, they are vulnerable to replay attacks.
Su-Min Jeon, Seung-Hyun Kim, Eui Chul Lee   +2 more
core   +1 more source

Bayesian Optimization for Realistic PPGI Video Synthesis

Current Directions in Biomedical Engineering
A key challenge in photoplethysmography imaging (PPGI) is the limited availability of heterogeneous data. Synthetic data offers a potential solution, but accurately reproducing realistic skin color variations in 3D render engine pipelines depends on ...
Reinhardt Tobias, Rohr Maurice, Dill Sebastian, Reinhold Emily, Hoog Antink Christoph   +4 more
doaj   +1 more source

Contactless Monitoring of Microcirculation Reaction on Local Temperature Changes

Applied Sciences, 2019
Assessment of skin blood flow is an important clinical task which is required to study mechanisms of microcirculation regulation including thermoregulation.
Maxim A. Volynsky, Nikita B. Margaryants, Oleg V. Mamontov, Alexei A. Kamshilin   +3 more
doaj   +1 more source

High-Reliability Non-Contact Photoplethysmography Imaging for Newborn Care by a Generative Artificial Intelligence

IEEE Access, 2023
Long-term wiring on a newborn patient could be a disguise scene for parents. Unobtrusive and reliable monitoring without wiring can be a euphoric alternative for newborns and parents in obstetrics and gynecology (OB/GYN) incubation rooms.
Yenming J. Chen, Lung-Chang Lin, Shu-Ting Yang, Kao-Shing Hwang, Chia-Te Liao, Wen-Hsien Ho   +5 more
doaj   +1 more source