Nondestructive Detection of Blackheart in Potato by Visible/Near Infrared Transmittance Spectroscopy

Figure 5

Score plots of the first and second principal components of PCA using 1800 variables: (a) raw transmittance; (b) weight correction transmittance; (c) height correction transmittance; (d) volume correction transmittance.

(a)

(b)

(c)

(d)