Table 1.

The globally averaged SNR (dB) over 23 benchmark videos of each rPPG algorithm by using different filters in the pre-processing. The bold entry denotes the best result obtained by each rPPG algorithm using the corresponding filter.

Pre-processing	G	G-R	HUE	PCA	ICA	CHROM	PBV	POS
None (baseline)	−15.84	−8.39	−6.90	−11.00	−8.96	−4.62	−4.22	−4.12
BPF	−15.16	−7.81	−5.32	−8.38	−6.04	−3.38	−1.84	−2.57
ASF	−9.16	−3.80	−1.78	−1.67	−1.01	−1.23	−0.40	−0.23
ASF+BPF	−8.42	−3.20	−1.20	−0.78	−0.32	−0.70	0.37	0.51