Jing-zhu WU, Xiao-qi LI, Li-juan SUN, Cui-ling LIU, Xiao-rong SUN, Mei SUN, Le YU. Study on the Optimization Method of Maize Seed Moisture Quantification Model Based on THz-ATR Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2021, 41(7): 2005
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 7, 2005 (2021)
Fig. 1. Time domain spectra and frequency domain spectra of the first batch of samples with different water contents
(a): Time domain spectra;(b): Frequency domain spectra
(a): Time domain spectra;(b): Frequency domain spectra
Fig. 2. Absorbance spectra of the first batch of samples with different water content
Fig. 3. THz characteristic spectral region of seed moisture based on interval PLSR
(a): iPLS; (b): biPLS; (c): siPLS; (d): mwPLS
(a): iPLS; (b): biPLS; (c): siPLS; (d): mwPLS
Fig. 4. Quantitative model prediction results based on siPLS feature band SVR
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Table 1. Statistical information of moisture content of samples
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Table 2. Results of seed moisture PLSR model predictions
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Table 3. Characteristic band screening results
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Table 4. Prediction results of PLSR linear model based on feature intervals
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Table 5. Prediction results of SVR nonlinear model based on characteristic intervals
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