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Remote Detection of Photoplethysmographic Systolic and Diastolic Peaks Using a Digital Camera

Author(s)
McDuff, Daniel Jonathan; Gontarek, Sarah; Picard, Rosalind W.
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Abstract
We present a new method for measuring photoplethysmogram signals remotely using ambient light and a digital camera that allows for accurate recovery of the waveform morphology (from a distance of 3 m). In particular, we show that the peak-to-peak time between the systolic peak and diastolic peak/inflection can be automatically recovered using the second-order derivative of the remotely measured waveform. We compare measurements from the face with those captured using a contact fingertip sensor and show high agreement in peak and interval timings. Furthermore, we show that results can be significantly improved using orange, green, and cyan color channels compared to the tradition red, green, and blue channel combination. The absolute error in interbeat intervals was 26 ms and the absolute error in mean systolic-diastolic peak-to-peak times was 12 ms. The mean systolic-diastolic peak-to-peak times measured using the contact sensor and the camera were highly correlated, ρ = 0.94 (p <; 0.001). The results were obtained with a camera frame-rate of only 30 Hz. This technology has significant potential for advancing healthcare.
Date issued
2014-07
URI
http://hdl.handle.net/1721.1/110626
Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Media Laboratory; Program in Media Arts and Sciences (Massachusetts Institute of Technology)
Journal
IEEE Transactions on Biomedical Engineering
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
McDuff, Daniel, Sarah Gontarek, and Rosalind W. Picard. “Remote Detection of Photoplethysmographic Systolic and Diastolic Peaks Using a Digital Camera.” IEEE Trans. Biomed. Eng. 61, no. 12 (December 2014): 2948–2954.
Version: Author's final manuscript
ISSN
0018-9294
1558-2531

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