Fu-jie ZHANG, Lei SHI, Li-xia LI, Hao-ran ZHAO, Yin-long ZHU. Study on Nondestructive Identification of Panax Notoginseng Powder Quality Grade Based on Hyperspectral Imaging Technology[J]. Spectroscopy and Spectral Analysis, 2022, 42(7): 2255
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 7, 2255 (2022)
Fig. 1. Four quality grades of panax notoginseng powder
Fig. 2. Diagram of hyperspectral imaging system
Fig. 3. (a) Original spectra; (b) Spectra after SG pretreatment; (c) Spectra after MSC pretreatment; (d) Spectra after SNV pretreatment
Fig. 4. Process of IRIV selection
Fig. 5. Wavelength selected by IRIV
Fig. 6. Wavelength selected by VCPA
Fig. 7. Wavelength selected by VCPA-IRIV
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Table 1. SVM modeling results of different pretreatment methods
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Table 2. SVM modeling results based on full spectral data and feature wavelengths
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Table 3. GSA-SVM and GS-SVM modeling results based on VCPA-IRIV
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