Figure 4: Bland–Altman (BA) Plots Showing Agreements Between the RMSSD Values Derived From rPPG and Those Derived From the Reference (PPG) Signals. (A)–(C) Show the BA Plots for RMSSD Derived From (A) the Average of All 10 S Recordings, (B) the Average of All 30 S Recordings, and (C) the 60 S Recordings.
doi 10.7717/peerj.8342/fig-4
