Cyborg and Bionic Systems / 2022 / Article / Fig 4

Research Article

Mobile Robotic Platform for Contactless Vital Sign Monitoring

Figure 4

Respiratory rate estimation with the IR camera for subjects with facemasks. (a) Estimated RR waveforms for one subject after ten different levels of exercise. IR camera temperature readings are normalized from 0 to 1. (b) Error analysis of RR estimation for waveforms in (a) with peak-to-peak (P2P) and fast Fourier transform (FFT). Various window sizes are used to determine the best parameters for quick screening and continuous monitoring. (c) Error analysis of RR estimation for 10 subjects standing 2 m from the IR camera. P2P and FFT are used at the optimal parameters. (d) Error analysis of RR estimation for 2 subjects standing 5 m from the IR camera. P2P and FFT are used at the optimal parameters.