Results 21 to 30 of about 7,351 (197)
On the cardiorespiratory coordination assessed by the photoplethysmography imaging technique
Scientific Reports, 2023 Cardiorespiratory coordination (CRC) probes the interaction between cardiac and respiratory oscillators in which cardiac and respiratory activity are synchronized, with individual heartbeats occurring at approximately the same temporal positions during ...
Stefan Borik +7 more
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Assessment of spatiotemporal heterogeneity of two-dimensional images on the example of photoplethysmograpic imaging of hemodynamics [PDF]
Известия Саратовского университета. Новая серия: Физика, 2023 Background and Objectives: The problem of representation of multidimensional data on a two-dimensional plane arises during the processing of a series of two-dimensional images in the spatiotemporal and time-frequency domains.
Sagaidachnyi, Andrey Aleksandrovich +7 more
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Assessment of cerebral circulation through an intact skull using imaging photoplethysmography [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2021 The feasibility of assessing the parameters of cerebral hemodynamics without skull trepanation using imaging photoplethysmography with illumination in the near-infrared spectrum range was demonstrated for the first time.
Maxim A. Volynsky +6 more
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Feasibility of Imaging Photoplethysmography [PDF]
2008 International Conference on BioMedical Engineering and Informatics, 2008 Contact and spot measurement have limited the application of photoplethysmography (PPG), thus an imaging PPG system comprising a digital CMOS camera and three wavelength light-emitting diodes (LEDs) is developed to detect the blood perfusion in tissue.
Jia Zheng +3 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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Validation of Skin Perfusion Monitoring by Imaging PPG versus Laser Speckle Imaging
Current Directions in Biomedical Engineering, 2023 Assessment of skin perfusion can reveal signs of deterioration and help to prevent critical states. Commonly applied clinical tests to capture skin perfusion are subjective and often hard to quantify.
Fleischhauer Vincent +2 more
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Contactless photoplethysmography for assessment of small fiber neuropathy
Frontiers in Physiology, 2023 Chronic pain is a prevalent condition affecting approximately one-fifth of the global population, with significant impacts on quality of life and work productivity.
Zbignevs Marcinkevics +6 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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Applied Sciences, 2020 Imaging photoplethysmography (iPPG) is a contact-free monitoring of the cutaneous blood volume pulse by RGB (red-green-blue) cameras. It detects vital parameters from skin areas and is associated to cutaneous perfusion. This study investigated the use of
Imre Kukel +6 more
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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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