Table 4.

Results for heart rate estimation (n = 16) using side view acquisitions.

Subject	Mean HR		RMSE (bpm)	$\overline{\mathit{\epsilon }}$	${\mathit{\epsilon }}_{90}$
	GT (bpm)	IRT (bpm)
Subject 1	66.69	66.81	2.87	0.04	0.06
Subject 2	63.98	64.48	1.22	0.02	0.03
Subject 4	62.11	65.84	5.77	0.06	0.13
Subject 6	87.86	85.58	4.35	0.03	0.07
Subject 7	70.03	68.72	2.24	0.03	0.05
Subject 8	65.97	66.21	3.84	0.04	0.09
Subject 9	78.77	76.81	3.95	0.04	0.08
Subject 11	65.47	68.13	6.94	0.06	0.12
Subject 12	69.82	69.51	3.71	0.04	0.08
Subject 13	54.03	52.97	2.54	0.04	0.09
Subject 14	64.36	64.86	1.08	0.01	0.02
Subject 15	88.98	86.98	4.36	0.04	0.08
Subject 16	60.02	63.99	5.18	0.07	0.14
Subject 17	65.79	66.16	1.39	0.02	0.04
Subject 18	51.08	49.43	2.68	0.04	0.10
Subject 19	61.32	63.33	2.72	0.03	0.07
Mean ± SD	67.27 ± 10.06	67.49 ± 9.32	3.43 ± 1.61	0.04 ± 0.01	0.08 ± 0.03

GT—ground truth, $\overline{\epsilon }$—mean relative error, ${\epsilon }_{90}$—90th percentile of the relative errors.