Results 111 to 120 of about 275,664 (215)

Camera-based evaluation of deep breathing effects on plantar foot microcirculation - A pilot study on young healthy

Comput. Biol. Medicine
BACKGROUND Microvascular function, particularly of the plantar foot, reflects overall vascular health and is influenced by physiological oscillators such as heart rate, respiratory, myogenic, and neurogenic rhythms.
Jan Seleng, D. Celovska, Patrik Procka, M. Labuda, Stefan Borik   +4 more
semanticscholar   +1 more source

Fingertip Video Dataset for Non-Invasive Diagnosis of Anemia Using ResNet-18 Classifier

IEEE Access
Hemoglobin is the iron containing protein in red blood cells which carries oxygen from lungs to rest of the body tissues. Accurate measurement of hemoglobin is essential for diagnosing anemia, a condition characterized by a deficiency of red blood cells.
Humera Sabir, Kifayat Ullah Khan, Omer Ishaq, Abdulwahab Alazeb, Hanan Aljuaid, Asaad Algarni, Jeongmin Park   +6 more
doaj   +1 more source

Comparative Analysis of Color Models for improved rPPG Signals in Remote Blood Pressure Measurement

Current Directions in Biomedical Engineering
The quality of remote photoplethysmography (rPPG) signals presents a significant challenge in contactless optical blood pressure measurement. Feature and morphologybased approaches heavily rely on subtle changes in signal characteristics, but rPPG ...
Wuerich Carolin, Heinrich Kira, Wiede Christian, Seidl Karsten   +3 more
doaj   +1 more source

Oscillometric blood pressure measurements on smartphones using vibrometric force estimation

Scientific Reports
This paper proposes a smartphone-based method for measuring Blood Pressure (BP) using the oscillometric method. For oscillometry, it is necessary to measure (1) the pressure applied to the artery and (2) the local blood volume change.
Colin Barry, Yinan Xuan, Ava Fascetti, Alison Moore, Edward Jay Wang   +4 more
doaj   +1 more source

Low-cost camera-based assessment of venous hemodynamics in the lower limbs: a study on young healthy volunteers

Biomedical Optics Express
This paper presents a non-contact and cost-effective method to assess venous hemodynamics along the lower limbs using photoplethysmography imaging (PPGI).
Idoia Badiola, Jan Seleng, Diogo F. Silva, V. Blazek, Steffen Leonhardt, Markus Lueken, Stefan Borik   +6 more
semanticscholar   +1 more source

Remote Assessment of the Cardiovascular Function Using Camera-Based Photoplethysmography

, 2019
Camera-based photoplethysmography (cbPPG) is a novel measurement technique that allows the continuous monitoring of vital signs by using common video cameras. In the last decade, the technology has attracted a lot of attention as it is easy to set up, operates remotely, and offers new diagnostic opportunities. Despite the growing interest, cbPPG is not
openaire   +1 more source

Real-time Heart Rate Measurement based on Photoplethysmography using Android Smartphone Camera

, 2017
Nguyen Viet Hoan, Jin‐Hyeok Park, Suk‐Hwan Lee, Ki‐Ryong Kwon   +3 more
openalex   +1 more source

A Low-Cost Three-Wavelength Illumination System for Camera-Based Photoplethysmography Imaging

Michal Labuda, Ivan Kuchta, Veronika Wohlmuthová, Jan Seleng   +3 more
openalex   +2 more sources

Association and Agreement of Contact-Based Smartphone Photoplethysmography Compared With Electrocardiography: Protocol for a Systematic Review and Meta-Analysis. [PDF]

JMIR Res Protoc
Mather JM, Sculthorpe N, Berry E, Mair J, Sanal-Hayes N, Hayes LD.   +5 more
europepmc   +1 more source

Feasibility of a Noncontact Photoplethysmography-Based Mobile App for Noninvasive Hemoglobin Monitoring: Exploratory Observational Study. [PDF]

JMIR Form Res
Zuccotti G, Agnelli P, Labati L, Cordaro E, Braghieri D, Fiorina P, Bertoli S, Berra CCF, Croci M, Malighetti ME, Losurdo F, Foppiani A, Bucciarelli L, Xodo M, Battezzati A, De Pasquale S, Calcaterra V.   +16 more
europepmc   +1 more source