Table 3.

PLS-DA results for mechanical damage classification using SWIR wavelength range.

Calibration
	True class			Recall (%)
Predicted class		Nil/low	Medium/high
	Nil/low	50	6	89.29
	Medium/high	4	40	90.91
Precision (%)		92.59	86.96
Cross-validation
	True class			Recall (%)
Predicted class		Nil/low	Medium/high
	Nil/low	50	7	87.72
	Medium/high	4	39	90.70
Precision (%)		92.59	84.78
Test
	True class			Recall (%)
Predicted class		Nil/low	Medium/high
	Nil/low	17	2	89.47
	Medium/high	1	24	96.00
Precision (%)		94.44	92.31