Xue-hui SUN, Bing ZHAO, Zhen LUO, Pei-jian SUN, Bin PENG, Cong NIE, Xue-guang SHAO. Design and Application of the Discrimination Filter for Near-Infrared Spectroscopic Analysis[J]. Spectroscopy and Spectral Analysis, 2022, 42(2): 399
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 2, 399 (2022)
Fig. 1. NIR spectra of tobacco leaves (a) and medicine capsules (b)
Blue: Calibration set; Red: Prediction set
Blue: Calibration set; Red: Prediction set
Fig. 2. Derivative spectra of tobacoo leaves (a) and medicine capsules (b)
Blue: Calibration set; Red: Prediction set
Blue: Calibration set; Red: Prediction set
Fig. 3. Clustering in principal component space (the distribution in PC1 and PC2 space)
(a): Tobacco leaves; (b): Medicine capsules
(a): Tobacco leaves; (b): Medicine capsules
Fig. 4. Descrimination filters for the tobacoo leaves (a) and the medicine capsules (b)
Fig. 5. Projection in the two-dimensional space of the filters
(a): Tobacoo leaves; (b): Medicine capsules; The insets circled by the dot-line show the enlarged graphs. The calibration and prediction samples are plotted by blind and solid points, respectively
(a): Tobacoo leaves; (b): Medicine capsules; The insets circled by the dot-line show the enlarged graphs. The calibration and prediction samples are plotted by blind and solid points, respectively
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Table 1. Discrimination results for the prediction samples of tobacco leaf and medicinal capsule
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