Results 41 to 50 of about 3,566 (223)
Optimal digital filter selection for remote photoplethysmography (rPPG) signal conditioning
Biomedical Physics & Engineering Express, 2023 Abstract Remote photoplethysmography (rPPG) using camera-based imaging has shown excellent potential recently in vital signs monitoring due to its contactless nature. However, the optimum filter selection for pre-processing rPPG data in signal conditioning is still not straightforward.
Saygun Guler +4 more
openaire +3 more sources
Journal of GeoEnergy, Volume 2023, Issue 1, 2023., 2023 Lost circulation has become one of the biggest challenges that drilling engineering faces during drilling, especially at high‐temperature reservoirs. The consequences of lost circulation can vary from an economic aspect as well as a safety aspect. In this paper, the capability of a novel high‐temperature recrosslinkable preformed particle gel (HT‐RPPG)
Baojun Bai +5 more
wiley +1 more source
Mask Attack Detection Using Vascular-Weighted Motion-Robust rPPG Signals
IEEE Transactions on Information Forensics and Security, 2023 Detecting 3D mask attacks to a face recognition system is challenging. Although genuine faces and 3D face masks show significantly different remote photoplethysmography (rPPG) signals, rPPG-based face anti-spoofing methods often suffer from performance degradation due to unstable face alignment in the video sequence and weak rPPG signals.
Chenglin Yao +5 more
openaire +2 more sources
Critical properties of the four-state Commutative Random Permutation Glassy Potts model in three and four dimensions [PDF]
, 2008 We investigate the critical properties of the four-state commutative random permutation glassy Potts model in three and four dimensions by means of Monte Carlo simulation and of a finite size scaling analysis.
A. Maiorano +15 more
core +3 more sources
Real-Time Webcam Heart-Rate and Variability Estimation with Clean Ground Truth for Evaluation
Applied Sciences, 2020 Remote photo-plethysmography (rPPG) uses a camera to estimate a person’s heart rate (HR). Similar to how heart rate can provide useful information about a person’s vital signs, insights about the underlying physio/psychological conditions can be obtained
Amogh Gudi +2 more
doaj +1 more source
Exploiting Spatial Redundancy of Image Sensor for Motion Robust rPPG [PDF]
IEEE Transactions on Biomedical Engineering, 2015 Remote photoplethysmography (rPPG) techniques can measure cardiac activity by detecting pulse-induced color variations on human skin using an RGB camera. State-of-the-art rPPG methods are sensitive to subject body motions (e.g., motion-induced color distortions). This study proposes a novel framework to improve the motion robustness of rPPG.
Wang, W., Stuijk, S., Haan, de, G.
openaire +3 more sources
PLoS ONE, 2022 The remote photoplethysmography (rPPG) based on cameras, a technology for extracting pulse wave from videos, has been proved to be an effective heart rate (HR) monitoring method and has great potential in many fields; such as health monitoring.
Weibo Wang +4 more
doaj +1 more source
Heart Rate Measurement Based on 3D Central Difference Convolution with Attention Mechanism
Sensors, 2022 Remote photoplethysmography (rPPG) is a video-based non-contact heart rate measurement technology. It is a fact that most existing rPPG methods fail to deal with the spatiotemporal features of the video, which is significant for the extraction of the ...
Xinhua Liu +3 more
doaj +1 more source
Continuous transport of Pacific-derived anthropogenic radionuclides towards the Indian Ocean [PDF]
, 2017 Unusually high concentrations of americium and plutonium have been observed in a sediment core collected from the eastern Lombok Basin between Sumba and Sumbawa Islands in the Indonesian Archipelago.
Fifield, L. Keith +6 more
core +1 more source
Addiction à l'alcool, objet concret et régulation des éprouvés internes [PDF]
, 2004 International audienceClinical work with alcoholics led us to examine intra-psychic tensions that existed prior to alcoholism and to foresee using them as a strategy for controlling—external, specific, and illusory—their “indescribable” internal feelings.
Gimenez, Guy +2 more
core +4 more sources