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. 2021 Feb 10;26(2):022707. doi: 10.1117/1.JBO.26.2.022707

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© 2021 The Authors

Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Fig. 1 — (a) Comparison of the normalized power spectral density of the video iPPG signal and the ground truth cPPG signal. (b) IBI estimates from iPPG compared with the ground truth for different BWs. The estimates are most accurate for the BW of 1 Hz (middle figure). (c) Trade-off between losing HRV information and rejecting motion interference by comparing the error in RMSSD estimate across different BWs.