Table 2.

Detection accuracy of infestation degrees by the BPNN model based on characteristic wavelengths.

Model	Actual Value	Calibration Set							Prediction Set
		DI 10	DI1	DI2	DI3	DI4	DI5	Accuracy	DI0	DI1	DI2	DI3	DI4	DI5	Accuracy
BPNN	DI0	24	2	1	0	3	0	80%	13	0	1	0	1	0	86.67%
	DI1	5	40	0	0	1	0	86.96%	4	18	0	0	1	0	78.26%
	DI2	0	0	45	1	0	0	97.83%	0	0	22	1	0	0	95.65%
	DI3	0	0	1	44	0	1	95.65%	0	0	0	22	0	1	95.65%
	DI4	0	1	0	0	44	1	95.65%	0	0	0	0	22	1	95.65%
	DI5	0	0	0	0	1	28	96.55%	0	0	0	0	1	14	93.33%
	Total							92.59%							90.98%

¹ Degree of infestation.