Combining WV-2 images and tree physiological factors to detect damage stages of Populus gansuensis by Asian longhorned beetle (Anoplophora glabripennis) at the tree level

Table 4 Accuracy for different stages of damaged Populus gansuensis. The best models are marked in bold

Classification approach	Damage stage	UA	OA	K
RF	green	0.897
	yellow	0.911	0.862	0.804
	grey	0.750
SVM	green	0.837
	yellow	0.846	0.824	0.756
	grey	0.784
CART	green	0.818
	yellow	0.75	0.775	0.692
	grey	0.774