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Proceedings Paper

Comparison of scientific CMOS camera and webcam for monitoring cardiac pulse after exercise
Author(s): Yu Sun; Charlotte Papin; Vicente Azorin-Peris; Roy Kalawsky; Stephen Greenwald; Sijung Hu
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Paper Abstract

In light of its capacity for remote physiological assessment over a wide range of anatomical locations, imaging photoplethysmography has become an attractive research area in biomedical and clinical community. Amongst recent iPPG studies, two separate research directions have been revealed, i.e., scientific camera based imaging PPG (iPPG) and webcam based imaging PPG (wPPG). Little is known about the difference between these two techniques. To address this issue, a dual-channel imaging PPG system (iPPG and wPPG) using ambient light as the illumination source has been introduced in this study. The performance of the two imaging PPG techniques was evaluated through the measurement of cardiac pulse acquired from the face of 10 male subjects before and after 10 min of cycling exercise. A time-frequency representation method was used to visualize the time-dependent behaviour of the heart rate. In comparison to the gold standard contact PPG, both imaging PPG techniques exhibit comparable functional characteristics in the context of cardiac pulse assessment. Moreover, the synchronized ambient light intensity recordings in the present study can provide additional information for appraising the performance of the imaging PPG systems. This feasibility study thereby leads to a new route for non-contact monitoring of vital signs, with clear applications in triage and homecare.

Paper Details

Date Published: 22 September 2011
PDF: 7 pages
Proc. SPIE 8135, Applications of Digital Image Processing XXXIV, 813506 (22 September 2011); doi: 10.1117/12.893362
Show Author Affiliations
Yu Sun, Loughborough Univ. (United Kingdom)
Shanghai Jiao Tong Univ. (China)
Charlotte Papin, Univ. Paris Sud 11 (France)
Vicente Azorin-Peris, Loughborough Univ. (United Kingdom)
Roy Kalawsky, Loughborough Univ. (United Kingdom)
Stephen Greenwald, Barts and The London School of Medicine and Dentistry (United Kingdom)
Sijung Hu, Loughborough Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 8135:
Applications of Digital Image Processing XXXIV
Andrew G. Tescher, Editor(s)

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