Jin-ping ZOU, Shuai ZHANG, Wen-tao DONG, Hai-liang ZHANG. Application of Hyperspectral Image to Detect the Content of Total Nitrogen in Fish Meat Volatile Base[J]. Spectroscopy and Spectral Analysis, 2021, 41(8): 2586
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 8, 2586 (2021)
Fig. 1. Imaging system schematic diagram of hyperspectral
Fig. 2. The reflectance spectra of salmon fish fillets at different TVB-N values
Fig. 3. Predicted and measured TVB-N values for both the PLS (a) and LS-SVM (b) models under the whole spectral wavelengths range
Fig. 4. Position of selected effective wavelengths by SPA
Fig. 5. Visualization of the predicted TVB-N content for 4 fish samples in prediction set
Fig. 6. Main steps of detection of salmon fish fillets TVB-N content using HIS
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Table 1. Reference values of TVB-N content (mg N/100 g) measured by a traditional method
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Table 2. Prediction results of LS-SVM and PLS based on full spectral parameters
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Table 3. Effective wavelengths selected by SPA
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Table 4. SPA-LS-SVM and SPA-PLS models for predicting TVB-N in salmon fillets by using the only 8 important wavelengths
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