Fig. 1: Impact of window size on rPPG method accuracy.
From: Optimal signal quality index for remote photoplethysmogram sensing
This figure displays the average absolute beats-per-minute difference (|ΔBPM|) across all activities and subjects for various remote photoplethysmography (rPPG) methods, as the window size increases from 1 to 3 s (from left to right). |ΔBPM| serves as a key metric for evaluating the precision of each rPPG technique over short analysis intervals. The data was obtained from the PURE dataset. ∣ΔBPM∣ beats-per-minute difference, rPPG remote photoplethysmography.
