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Noncontact imaging photoplethysmography to effectively access pulse rate variability

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journal contribution
posted on 20.05.2016 by Yu Sun, Sijung Hu, V Azorin-Peris, Roy Kalawsky, Stephen Greenwald
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.

Funding

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).

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

JOURNAL OF BIOMEDICAL OPTICS

Volume

18

Issue

6

Pages

? - ? (9)

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.

Publisher

SPIE (© the authors)

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution 3.0 Unported (CC BY 3.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by/3.0/

Publication date

2013

Notes

© 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.

ISSN

1083-3668

eISSN

1560-2281

Language

en

Licence

Exports