Figure 4

Visual performance of the proposed method in extracting the interested signal from synthetic signals. (a): Clean red PPG signal; (b): Clean IR PPG signal; (c): MA noise; (d): Mixed signal of the red PPG signal and MA noise with SNR = 0 dB; (e): Mixed signal of the IR PPG signal and MA noise with SNR = 0 dB; (f): Reference signal for the cICA; (g): cICA output; (h): Recovered red PPG signal; (i): Recovered IR PPG signal; (j): Recovered MA noise by cICA-LMS algorithm.