We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Feasibility of long-distance heart rate monitoring using transmittance photoplethysmographic imaging (PPGI).
- Authors
Amelard, Robert; Scharfenberger, Christian; Kazemzadeh, Farnoud; Pfisterer, Kaylen J.; Lin, Bill S.; Clausi, David A.; Wong, Alexander
- Abstract
Photoplethysmography (PPG) devices are widely used for monitoring cardiovascular function. However, these devices require skin contact, which restricts their use to at-rest short-term monitoring. Photoplethysmographic imaging (PPGI) has been recently proposed as a non-contact monitoring alternative by measuring blood pulse signals across a spatial region of interest. Existing systems operate in reflectance mode, many of which are limited to short-distance monitoring and are prone to temporal changes in ambient illumination. This paper is the first study to investigate the feasibility of long-distance non-contact cardiovascular monitoring at the supermeter level using transmittance PPGI. For this purpose, a novel PPGI system was designed at the hardware and software level. Temporally coded illumination (TCI) is proposed for ambient correction, and a signal processing pipeline is proposed for PPGI signal extraction. Experimental results show that the processing steps yielded a substantially more pulsatile PPGI signal than the raw acquired signal, resulting in statistically significant increases in correlation to ground-truth PPG in both short- ∈ p ( [<0.0001,0.006]) and long-distance ∈ p ( [<0.0001,0.053]) monitoring. The results support the hypothesis that long-distance heart rate monitoring is feasible using transmittance PPGI, allowing for new possibilities of monitoring cardiovascular function in a non-contact manner.
- Subjects
PHOTOPLETHYSMOGRAPHY; CARDIOVASCULAR system; TRANSMISSOMETERS; HEART rate monitoring; CARDIOPULMONARY system
- Publication
Scientific Reports, 2015, p1
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/srep14637