Table 2.

Results on identifying artifacts types using the proposed method. We showed the numbers for no artifacts, gapping artifacts, and overlapping artifacts, where gapping artifacts included the blurring artifacts caused by low frequency respiration and the gapping artifacts caused by high amplitude cycle or low amplitude cycle. The ground truth is shown in brackets.

	No artifacts	Gapping artifacts	Overlapping artifacts
Patient 1	56 (65)	20 (16)	24 (19)
Patient 2	162 (163)	29 (28)	9 (9)
Patient 3	109 (121)	20 (13)	15 (10)
Patient 4	73 (73)	21 (20)	16 (17)
Patient 5	27(46)	30 (18)	13 (6)