Table 6.

Testing emotion classification accuracy and F1-score for 1-D and 2-D electrocardiogram (ECG).

Type of ECG input	Feature extractor	Valence		Arousal
		Accuracy	F1-Score	Accuracy	F1-Score
1-D	*AUBT and BioSig	62.37	53.05	62.37	57.98
	AUBT	63.86	72.73	57.83	44.44
	TEAP	65.06	75.63	54.22	42.42
2-D	ORB	61.75	47.76	56.33	40.59
	KAZE	62.35	49.57	56.33	40.59
	SIFT	61.14	46.4	56.33	40.59
	AKAZE	61.75	47.76	59.64	59.71
	BRISK	61.75	47.76	56.02	40.23
	HOG	61.14	46.4	56.33	40.59