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Title: Noncontact imaging photoplethysmography to effectively access pulse rate variability
Authors: Sun, Yu
Hu, Sijung
Azorin-Peris, Vicente
Kalawsky, Roy S.
Greenwald, Stephen
Keywords: Photoplethysmography
Complementary metal-oxide semiconductor camera
Pulse rate variability
Frame rate
Issue Date: 2013
Publisher: SPIE (© the authors)
Citation: SUN, Y. ... et al., 2013. Noncontact imaging photoplethysmography to effectively access pulse rate variability. Journal of Biomedical Optics, DOI: 10.1117/1.JBO.18.6.061205.
Abstract: Noncontact imaging photoplethysmography (PPG) can provide physiological assessment at various anatomical locations with no discomfort to the patient. However, most previous imaging PPG (iPPG) systems have been limited by a low sample frequency, which restricts their use clinically, for instance, in the assessment of pulse rate variability (PRV). In the present study, plethysmographic signals are remotely captured via an iPPG system at a rate of 200 fps. The physiological parameters (i.e., heart and respiration rate and PRV) derived from the iPPG datasets yield statistically comparable results to those acquired using a contact PPG sensor, the gold standard. More importantly, we present evidence that the negative influence of initial low sample frequency could be compensated via interpolation to improve the time domain resolution. We thereby provide further strong support for the low-cost webcam-based iPPG technique and, importantly, open up a new avenue for effective noncontact assessment of multiple physiological parameters, with potential applications in the evaluation of cardiac autonomic activity and remote sensing of vital physiological signs.
Description: © 2012 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Sponsor: This report presents independent research commissioned by the National Institute for Health Research (NIHR) under the Invention for Innovation (i4i) program (Grant No. II-FS-0109-11005).
Version: Published
DOI: 10.1117/1.JBO.18.6.061205
URI: https://dspace.lboro.ac.uk/2134/21289
Publisher Link: http://dx.doi.org/10.1117/1.JBO.18.6.061205
ISSN: 1083-3668
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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