Results 1 to 10 of about 275,626 (178)

Camera-based photoplethysmography in an intraoperative setting [PDF]

BioMedical Engineering OnLine, 2018
Background Camera-based photoplethysmography (cbPPG) is a measurement technique which enables remote vital sign monitoring by using cameras. To obtain valid plethysmograms, proper regions of interest (ROIs) have to be selected in the video data.
Alexander Trumpp, Johannes Lohr, Daniel Wedekind, Martin Schmidt, Matthias Burghardt, Axel R. Heller, Hagen Malberg, Sebastian Zaunseder   +7 more
doaj   +9 more sources

The value of polarization in camera-based photoplethysmography. [PDF]

Biomed Opt Express, 2017
Camera-based photoplethysmography (cbPPG) is a novel measuring technique that permits the remote acquisition of cardiovascular signals using video cameras.
Trumpp A, Bauer PL, Rasche S, Malberg H, Zaunseder S.   +4 more
europepmc   +5 more sources

Camera-Based Photoplethysmography for Measuring Heartbeat Intervals During General Anesthesia. [PDF]

Anesth Analg
BACKGROUND: Photoplethysmography has been used to assess vital signs since the late 19th century. Recently, camera-based photoplethysmography systems have gained attention due to their noninvasive nature. However, challenges such as low perfusion, motion
Ke HH, Ting CK, Huang YM, Hung JC, Lai PY, Shih CX, Su HR, Kuo WC.   +7 more
europepmc   +4 more sources

Intraoperative Imaging of Cortical Blood Flow by Camera-Based Photoplethysmography at Green Light [PDF]

Applied Sciences, 2020
Intraoperative evaluation of blood perfusion in the brain cortex is an important but hitherto unresolved problem. Our aim was to demonstrate the feasibility of cerebral microcirculation assessment during open brain surgery by using camera-based ...
Oleg V. Mamontov, Anton V. Shcherbinin, Roman V. Romashko, Alexei A. Kamshilin   +3 more
doaj   +5 more sources

Vasomotor assessment by camera-based photoplethysmography

Current Directions in Biomedical Engineering, 2016
Camera-based photoplethysmography (cbPPG) is a novel technique that allows the contactless acquisition of cardio-respiratory signals. Previous works on cbPPG most often focused on heart rate extraction.
Trumpp Alexander, Schell Joachim, Malberg Hagen, Zaunseder Sebastian   +3 more
doaj   +6 more sources

Enhancement of Stress Classification Using Web Camera-Based Imaging Photoplethysmography With a Frame Alignment Method

IEEE Access
Stress is a mental health problem that is hazardous if not recognized early. A promising approach for noninvasive stress detection involves leveraging camera technology; however, there are notable challenges involved in this method, particularly ...
Atika Hendryani, Mia Rizkinia, Dadang Gunawan   +2 more
doaj   +4 more sources

Vital signs estimation in elderly using camera-based photoplethysmography [PDF]

Multimedia Tools and Applications
In the context of Ambient Assisted Living, the demand for healthcare technologies development has been increased in the last two years by the current global health situation.
Andrea Caroppo, Andrea Manni, Gabriele Rescio, Pietro Siciliano, Alessandro Leone   +4 more
semanticscholar   +4 more sources

Pulse decomposition analysis in camera-based photoplethysmography [PDF]

2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2019
Imaging photoplethysmography (iPPG) is an interesting alternative to laser speckle contrast imaging for the analysis of spatio-temporal patterns in the cutaneous microcirculation.
Michele Sorelli, Carlotta Kopietz, Sebastian Zaunseder, Leonardo Bocchi   +3 more
semanticscholar   +6 more sources

Spiking-Physformer: Camera-Based Remote Photoplethysmography with Parallel Spike-Driven Transformer [PDF]

Neural Networks
Artificial neural networks (ANNs) can help camera-based remote photoplethysmography (rPPG) in measuring cardiac activity and physiological signals from facial videos, such as pulse wave, heart rate and respiration rate with better accuracy. However, most
Mingxuan Liu, Jiankai Tang, Haoxiang Li, Jiahao Qi, Siwei Li, Kegang Wang, Yuntao Wang, Hong Chen   +7 more
semanticscholar   +8 more sources

Optimal color channel combination across skin tones for remote heart rate measurement in camera-based photoplethysmography

Biomedical Signal Processing and Control, 2021
Objective The heart rate is an essential vital sign that can be measured remotely with camera-based photoplethysmography (cbPPG). Systems for cbPPG typically use cameras that deliver red, green, and blue (RGB) channels.
Hannes Ernst, Matthieu Scherpf, Hagen Malberg, Martin Schmidt   +3 more
semanticscholar   +5 more sources