Ai-guo OUYANG, Hao-chen LIU, Long CHENG, Xiao-gang JIANG, Xiong LI, Xuan HU. Hyperspectral Image Features Combined With Spectral Features Used to Classify the Bruising Time of Peach[J]. Spectroscopy and Spectral Analysis, 2021, 41(8): 2598
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 8, 2598 (2021)
Fig. 1. Hyperspectral image of experimental samples
Fig. 2. Sketch map of hyperspectral system
Fig. 3. Spectra of samples without bruise and with different bruise time
Fig. 4. The first five PC images obtained by PCA
Fig. 5. Weight coefficient of PC1 image
Fig. 6. Feature images of samples with different bruising time
Fig. 7. Gray histogram statistical feature extraction process
Fig. 8. Score projection of the first three principal components (PCs) of all peaches
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Table 1. Results of LS-SVM modeling based on the spectral features
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Table 2. Results of LS-SVM modeling based on the image features
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Table 3. Results of LS-SVM modeling based on the image features combined with spectral features
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