Fig. 1

Reflectance spectra of corn (n = 117) in different spectral pre-treatments. (a) Raw spectra; (b): Derivative 2,4,4,1; (c): Derivative 2,4,4,1 + Standard normal variate plus detrend correction (SNVD)
Reflectance spectra of corn (n = 117) in different spectral pre-treatments. (a) Raw spectra; (b): Derivative 2,4,4,1; (c): Derivative 2,4,4,1 + Standard normal variate plus detrend correction (SNVD)