Brno University of Technology Smartphone PPG Database (BUT PPG): Annotated Dataset for PPG Quality Assessment and Heart Rate Estimation

Figure 3

The main window of the tailor-made annotating software. (a) The original PPG signal. The five graphs on (b) show the selected frequency bands of the signal decomposed by the SWT. (c) The original PPG signal plotted especially for the manual measurement of the distances between peaks. (d) The spectrum of the signal. Red circles represent automatically found peaks of the signals. Black lines with numbers in the middle are the rulers for the manual measurement of distances between peaks within the signals.