Table 4.

The result of time-domain metrics on the PURE dataset.

Method	${\mathit{AVNN}}_{\mathit{mae}}\left(\mathit{ms}\right)$	${\mathit{SDNN}}_{\mathit{mae}}\left(\mathit{ms}\right)$	${\mathit{RMSSD}}_{\mathit{mae}}\left(\mathit{ms}\right)$
CHROM [9]	49.63	89.30	-
FaceRPPG [21]	-	18	15
PulseGAN [22]	28.92	49.39	-
PhysNet [25]	12.34	14.22	34.16
Ours	8.92	11.75	26.12