Forest Ecosystems

Table 10 Classification confusion matrix of random forest (RF) classifier using vegetation indices, red edge parameters, moisture indices, and combined all variables based on UAV hyperspectral data

From: Early detection of pine wilt disease in Pinus tabuliformis in North China using a field portable spectrometer and UAV-based hyperspectral imagery

Stage	Vegetation Indices						Red Edge Parameters
Stage	H	E	M	S	Total	UA (%)	H	E	M	S	Total	UA (%)
H	25	9	1	0	35	71.43	28	8	1	0	37	75.68
E	10	16	2	0	28	57.14	9	15	3	0	27	55.56
M	3	1	22	4	30	73.33	1	2	22	3	28	78.57
S	1	1	4	22	28	78.57	1	2	3	23	29	79.31
Total	39	27	29	26	121		39	27	29	26	121
PA (%)	64.10	59.26	75.86	84.62	OA (%)	70.25	71.79	55.56	75.86	88.46	OA (%)	72.73
					Kappa	0.60					Kappa	0.63
Stage	Moisture Indices						Combined
Stage	H	E	M	S	Total	UA (%)	H	E	M	S	Total	UA (%)
H	24	9	2	1	36	66.67	28	8	0	0	36	77.78
E	10	14	3	2	29	48.28	9	15	2	0	26	57.69
M	3	2	20	4	29	68.97	1	2	24	3	30	80.00
S	2	2	4	19	27	70.37	1	2	3	23	29	79.31
Total	39	27	29	26	121		39	27	29	26	121
PA (%)	61.54	51.85	68.97	73.08	OA (%)	63.64	71.79	55.56	82.76	88.46	OA (%)	74.38
					kappa	0.51					Kappa	0.66

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