Advantage of Combining OBIA and Classifier Ensemble Method for Very High-Resolution Satellite Imagery Classification

Table 5

Overall accuracy and kappa coefficient of selected algorithms.

			DTC	SVM	KNN	RF
GF-1		OA (%)	72.4	87.5	87.4	94.67
		Kappa	0.68	0.85	0.85	0.93
		Time used (s)	0.032	0.57	0.05	27.13
		OA (%)	82.86	90.86	89.71	99.43
		Kappa	0.79	0.89	0.87	0.99
		Time used (s)	0.034	0.71	0.1	15.53
GF-2		OA (%)	66.67	85.5	89.21	91.26
		Kappa	0.63	0.83	0.87	0.89
		Time used (s)	0.36	589.31	1.89	251.32
		OA (%)	64.76	94.97	96.69	98.98
		Kappa	0.6	0.94	0.96	0.98
		Time used (s)	0.58	402.86	86.83	208.02