Li-jia XU, Ming CHEN, Yu-chao WANG, Xiao-yan CHEN, Xiao-long LEI. Study on Non-Destructive Detection Method of Kiwifruit Sugar Content Based on Hyperspectral Imaging Technology[J]. Spectroscopy and Spectral Analysis, 2021, 41(7): 2188
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 7, 2188 (2021)
Fig. 1. Hyperspectral sorter
Fig. 2. Spectral information of kiwi samples
Fig. 3. Spectral reflectance images before and after DOSC preprocessing
Fig. 4. The correlation coefficient between spectral band and sugar content before and after DOSC preprocessing
Fig. 5. Extracting characteristic variables by IRIV
Fig. 6. Distribution of IRIV characteristic spectral variables
Fig. 7. The results of CARS
Fig. 8. Distribution diagram of SPA spectral characteristic variables
Fig. 9. Distribution of SPA characteristic spectral variables for kiwifruit sugar content
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Table 1. The statistical results of kiwi fruit sugar content measurement (unit: /°Brix)
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Table 2. All-band ELM prediction model using different pretreatment methods
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Table 3. The number of feature variables extracted by different feature extraction methods
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Table 4. PSO optimized parameters γ , σ 2
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Table 5. Prediction results of SVR model established by different feature extraction methods
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Table 6. Prediction results of LSSVM model established by different feature extraction methods
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Table 7. Prediction results of ELM model established by different feature extraction methods
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