Fig 1.
Arbitrary three baseline-corrected skin spectra.
Fig 2.
The first three PCs scatter plot in training set of a skin spectra, b flesh spectra, and c average spectra of them; the first three PCs scatter plot in test set of d skin spectra, e flesh spectra, and f average spectra of them. (The red balls represent samples of Hongxiangfei, the blue balls present samples of Manaiti and the green balls represent samples of Munage).
Table 1.
The proportion of each principal component in the cumulative variance.
Fig 3.
Average raw spectra of a skin, b flesh, and c both of them.
Table 2.
Peak positions and tentative assignments of the major NIR bands of raisins.
Fig 4.
The average accuracy of the models for three types of raisins.
Fig 5.
The Macro-F1 score of the models.
Table 3.
Compared with other methods, the improvement of model with feature fusion.