Composite Clustering Sampling Strategy for Multiscale Spectral-Spatial Classification of Hyperspectral Images

Table 4

Classification accuracy and test set independence rate with different sampling strategies of the Indian Pines dataset.

Sampling strategy	3D-CNN				1D-3D-2D-CNN				Test set-independent sample rate (%)
	OA (%)	AA (%)	Kappa	Time (min.)	OA (%)	AA (%)	Kappa	Time (min.)
Area	46.81	42.55	0.3950	9.24	49.76	51.12	0.4392	1.95	90.93
Random	90.33	91.69	0.8894	9.24	94.36	92.91	0.9356	1.87	1.75
	63.55	62.66	0.5808	10.15	77.19	70.83	0.7402	1.98	81.88
	58.76	58.84	0.5284	10.11	73.72	70.68	0.7007	2.01	81.48
	65.57	64.35	0.6059	10.10	76.06	72.53	0.7278	2.00	81.52
	66.24	66.20	0.6136	10.12	77.01	70.58	0.7385	2.04	80.17
	66.73	68.39	0.6161	10.21	78.60	77.01	0.7558	2.13	77.23
	63.57	65.34	0.5803	9.37	79.83	77.50	0.7699	2.10	75.51
	67.90	68.93	0.6295	9.41	78.27	77.38	0.7501	2.05	75.15
	66.19	68.59	0.6104	9.48	80.23	79.38	0.7742	2.12	75.02
	65.49	68.57	0.6019	9.42	78.62	79.64	0.7554	2.29	74.23
	65.08	69.98	0.5963	9.50	82.86	82.08	0.8039	2.34	71.68
	69.22	72.12	0.6443	9.51	80.45	78.71	0.7769	2.36	70.20
	69.73	73.32	0.6517	9.56	80.30	80.22	0.7743	2.40	69.34
	70.94	71.98	0.6650	9.61	80.09	78.36	0.7720	2.46	67.98
	69.40	73.11	0.6467	9.69	83.01	81.13	0.8059	2.44	67.34
	70.24	72.06	0.6566	9.25	81.94	80.28	0.7932	2.46	65.81