Results 21 to 30 of about 7,588 (215)
Imaging Photoplethysmography: Signal Waveform Analysis [PDF]
2019 10th IEEE International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS), 2019 Imaging photoplethysmography (iPPG) is used to remotely measure the blood volume pulse using a camera. Traditionally, it has been employed to estimate heart and respiratory rates, and recently blood pressure and oxygen saturation. Biomedical engineering researchers have become increasingly interested in iPPG because of its several advantages as comfort,
Djamaleddine Djeldjli +3 more
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Remote Photoplethysmography for Evaluation of Cutaneous Sensory Nerve Fiber Function
Sensors, 2021 About 2% of the world’s population suffers from small nerve fiber dysfunction, neuropathy, which can result in severe pain. This condition is caused by damage to the small nerve fibers and its assessment is challenging, due to the lack of simple and ...
Zbignevs Marcinkevics +3 more
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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 +3 more
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On the Vector Space in Photoplethysmography Imaging [PDF]
2019 IEEE/CVF International Conference on Computer Vision Workshop (ICCVW), 2019 We study the vector space of visible wavelength intensities from face videos widely used as input features in Photoplethysmography Imaging (PPGI). Based upon theoretical principles of group invariance in the Euclidean space, we derive a change of the topology where the corresponding distance between successive measurements is defined as geodesic on a ...
Pilz, Christian S. +2 more
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Empirical retinal venous pulse wave velocity using modified photoplethysmography
BMC Research Notes, 2023 Objective Using the novel imaging method of high-speed modified photoplethysmography we measured the retinal venous pulse wave velocity in a single case. Results A healthy 30-year-old subject underwent high-speed modified photoplethysmography (120 frames
Anmar Abdul-Rahman +5 more
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Photoplethysmographic imaging of hemodynamics and two-dimensional oximetry [PDF]
Известия Саратовского университета. Новая серия: Физика, 2022 Background and Objectives: A review of recent papers devoted to actively developing methods of photoplethysmographic imaging (PPGI) of blood volume pulsations in vessels and non-contact two-dimensional oximetry on the surface of the human body is carried
Volkov, Ivan Yu. +2 more
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Holographic laser Doppler imaging of pulsatile blood flow [PDF]
, 2015 We report on wide-field imaging of pulsatile motion induced by blood flow using heterodyne holographic interferometry on the thumb of a healthy volunteer, in real-time.
Atlan, Michael +4 more
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A Multilayer Monte Carlo Model for the Investigation of Optical Path and Penetration Depth at Different Perfusion States of the Colon [PDF]
, 2019 There is a great interest in monitoring the oxygen supply delivered to the colon. Insufficient oxygen delivery may lead to hypoxia, sepsis, multiorgan dysfunction and death.
Chatterjee, S. +3 more
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Using imaging photoplethysmography for heart rate estimation in non-human primates. [PDF]
PLoS ONE, 2018 For humans and for non-human primates heart rate is a reliable indicator of an individual's current physiological state, with applications ranging from health checks to experimental studies of cognitive and emotional state.
Anton M Unakafov +5 more
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Sensors, 2022 Endothelial dysfunction is one of the most important markers of the risk of cardiovascular complications. This study is aimed to demonstrate the feasibility of imaging photoplethysmography to assess microcirculation response to local heating in order to ...
Alexei A. Kamshilin +7 more
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