Results 31 to 40 of about 275,664 (215)

A Comparative Evaluation of Heart Rate Estimation Methods using Face Videos [PDF]

, 2020
This paper presents a comparative evaluation of methods for remote heart rate estimation using face videos, i.e., given a video sequence of the face as input, methods to process it to obtain a robust estimation of the subjects heart rate at each moment ...
Diaz, David, Fierrez, Julian, Hernandez-Ortega, Javier, Morales, Aythami   +3 more
core   +1 more source

Methods of Contactless Blood Pressure Measurement

Current Directions in Biomedical Engineering, 2022
Contactless blood pressure monitoring displays a chance for detecting hypertension and increasing the awareness of cardiovascular diseases. Camera-based methods show high potential for replacing inconvenient cuff-based technology.
Bajraktari Flakë, Liu Jan, Pott Peter P.   +2 more
doaj   +1 more source

Effectiveness of Remote PPG Construction Methods: A Preliminary Analysis

Bioengineering, 2022
The contactless recording of a photoplethysmography (PPG) signal with a Red-Green-Blue (RGB) camera is known as remote photoplethysmography (rPPG).
Fridolin Haugg, Mohamed Elgendi, Carlo Menon   +2 more
doaj   +1 more source

Contactless Camera-Based Sleep Staging: The HealthBed Study

Bioengineering, 2023
Polysomnography (PSG) remains the gold standard for sleep monitoring but is obtrusive in nature. Advances in camera sensor technology and data analysis techniques enable contactless monitoring of heart rate variability (HRV).
Fokke B. van Meulen, Angela Grassi, Leonie van den Heuvel, Sebastiaan Overeem, Merel M. van Gilst, Johannes P. van Dijk, Henning Maass, Mark J. H. van Gastel, Pedro Fonseca   +8 more
doaj   +1 more source

Spatio-temporal and -spectral feature maps in photoplethysmography imaging and infrared thermograph

BioMedical Engineering OnLine, 2021
Background Only a small fraction of the information available is generally used in the majority of camera-based sensing approaches for vital sign monitoring.
Michael Paul, Sabrina Caprice Behr, Christoph Weiss, Konrad Heimann, Thorsten Orlikowsky, Steffen Leonhardt   +5 more
doaj   +1 more source

Cuffless Single-Site Photoplethysmography for Blood Pressure Monitoring [PDF]

, 2020
One in three adults worldwide has hypertension, which is associated with significant morbidity and mortality. Consequently, there is a global demand for continuous and non-invasive blood pressure (BP) measurements that are convenient, easy to use, and ...
Abbott, D., Allen, J., Chan, G., Chan, W-S., Cooper, R., Elgendi, M., Fletcher, R., Hosanee, M., Howard, N., Kyriacou, P. A., Lim, K., Lovell, N. H., Menon, C., Ward, R., Welykholowa, K., Zheng, D.   +15 more
core   +3 more sources

PTT-based Contact-less Blood Pressure Measurement using an RGB-Camera

Current Directions in Biomedical Engineering, 2021
Commonly used blood pressure measurement devices have noticeable limitations in accuracy, measuring time, comfort or safety. To overcome these limitations, we developed and tested a surrogate-based, non-invasive blood pressure measurement method using an
Wuerich Carolin, Rademacher Robin, Wiede Christian, Grabmaier Anton   +3 more
doaj   +1 more source

Development of a Novel Web Camera-Based Contact-Free Major Depressive Disorder Screening System Using Autonomic Nervous Responses Induced by a Mental Task and Its Clinical Application

Frontiers in Physiology, 2021
BackgroundTo increase the consultation rate of potential major depressive disorder (MDD) patients, we developed a contact-type fingertip photoplethysmography-based MDD screening system.
Batbayar Unursaikhan, Batbayar Unursaikhan, Nobuaki Tanaka, Guanghao Sun, Sadao Watanabe, Masako Yoshii, Kazuki Funahashi, Fumihiro Sekimoto, Fumiaki Hayashibara, Yutaka Yoshizawa, Lodoiravsal Choimaa, Takemi Matsui   +11 more
doaj   +1 more source

Robust Heart Rate Variability Measurement from Facial Videos

Bioengineering, 2023
Remote Photoplethysmography (rPPG) is a contactless method that enables the detection of various physiological signals from facial videos. rPPG utilizes a digital camera to detect subtle changes in skin color to measure vital signs such as heart rate ...
Ismoil Odinaev, Kwan Long Wong, Jing Wei Chin, Raghav Goyal, Tsz Tai Chan, Richard H. Y. So   +5 more
doaj   +1 more source

Evaluation of Remote Photoplethysmography Measurement Conditions toward Telemedicine Applications

Sensors, 2021
Camera-based remote photoplethysmography (rPPG) is a low-cost and casual non-contact heart rate measurement method suitable for telemedicine. Several factors affect the accuracy of measuring the heart rate and heart rate variability (HRV) using rPPG ...
Akito Tohma, Maho Nishikawa, Takuya Hashimoto, Yoichi Yamazaki, Guanghao Sun   +4 more
doaj   +1 more source