Table 1.

Spectrum data collection of tobacco diseased leaf and healthy leaf.

	training sample	test sample	sample size
healthy	125	26	151
PVY	361	95	456
TMV	229	57	286
PVY1	20	4	24
PVY3	24	10	34
PVY5	96	22	118
PVY7	120	34	154
PVY9	102	24	126
TMV1	37	14	51
TMV3	60	10	70
TMV5	47	12	59
TMV7	36	13	49
TMV9	45	11	56
Diseased	589	153	742