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. 2016 Nov 1;7(12):4874–4885. doi: 10.1364/BOE.7.004874

Fig. 6.

Fig. 6

Extracted waveforms from the proposed and comparison methods across four participants. The selected waveforms were those that exhibited the strongest correlation from DistancePPG (a), FaceMeanPPG (b), FusionPPG (c), and a participant with arrhythmia (d). FusionPPG was able to extract strong waveforms across all participants, enabling the visual assessment of a cardiac arrhythmia (at t = 6 s).