Fig. 4
From: Movement artefact removal from NIRS signal using multi-channel IMU data
Qualitative representation of the NIRS signal after replacing the 3 artefacts containing segments by de-noised signal along with the referenced ground truth signal from the other NIRS channel which is analogous to “ground truth” signal. Plot (a) shows the result when three channels were used, plot (b) when six channels were used and plot (c) when nine channels were used