Measurement of heart rate variability using off-the-shelf smart phones

Table 3 The HRV metrics estimated by different methods in the “static subjects” category

Clip names	HRV metrics (ms)	Chest band	ICA [8]		C-rPPG [10]		Our method
Clip names	HRV metrics (ms)	Est.	Est.	Abs. error	Est.	Abs. error	Est.	Abs. error
Static_1	SD1	22.02	68.89	46.87	61.77	39.75	24.89	2.87
	SD2	65.15	83.11	17.96	94.77	29.62	64.77	0.38
	SDNN	49.28	77.69	28.41	83.87	34.59	48.79	0.49
	RMSSD	30.81	96.31	65.50	87.30	56.49	34.63	3.82
	SDSD	31.21	97.88	66.67	88.59	57.38	35.20	3.99
Static_2	SD1	24.58	78.59	54.01	38.73	14.15	18.85	5.73
	SD2	72.80	90.66	17.86	79.03	6.23	69.40	3.40
	SDNN	54.03	85.56	31.53	62.35	8.32	50.75	3.28
	RMSSD	34.29	109.80	75.51	54.04	19.75	26.32	7.97
	SDSD	34.76	111.34	76.58	54.77	20.01	26.66	8.10
Static_3	SD1	22.37	89.13	66.76	62.31	39.94	18.79	3.58
	SD2	62.23	101.16	38.93	94.81	32.58	59.92	2.31
	SDNN	47.09	95.70	48.61	84.68	37.59	44.51	2.58
	RMSSD	31.25	140.83	109.58	87.59	56.34	26.16	5.09
	SDSD	31.67	143.04	111.37	88.92	57.25	26.54	5.13
Static_4	SD1	18.62	99.79	81.17	78.78	60.16	18.93	0.31
	SD2	38.41	107.31	68.90	91.64	53.23	41.15	2.74
	SDNN	30.21	104.91	74.70	86.29	56.08	31.91	1.70
	RMSSD	26.01	139.95	113.94	127.83	101.82	26.43	0.42
	SDSD	26.34	141.69	115.35	129.47	103.13	26.77	0.43

ISSN: 1475-925X