Monitoring of Wheat Scab Using the Specific Spectral Index from ASD Hyperspectral Dataset

Table 4

Multiple stepwise regression model implemented in SPSS.

Model	R	R^2	Error estimation	Predictor variable
1	0.853	0.73	13.13	Constant, WSI
2	0.865	0.75	12.80	Constant, WSI, SDg/SDb
3	0.877	0.77	12.41	Constant, WSI, SDg/SDb, NBNDVI
4	0.887	0.79	12.12	Constant, WSI, SDg/SDb, NBNDVI, SDg