Kai QIN, Gang CHEN, Jian-yi ZHANG, Xia-ping FU. Optimization of Fruit Pose and Modeling Method for Online Spectral Detection of Apple Moldy Core[J]. Spectroscopy and Spectral Analysis, 2021, 41(11): 3405
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 11, 3405 (2021)
Fig. 1. Contrast of healthy fruit (left) and fruit with moldy core (right)
Fig. 2. Average transmission spectra of healthy fruit and fruit with moldy core in four transportation postures
(a): Stem upward; (b): Stem downward; (c): Stem towards the transportation direction;(d): Stem perpendicular to the transportation direction
(a): Stem upward; (b): Stem downward; (c): Stem towards the transportation direction;(d): Stem perpendicular to the transportation direction
Fig. 3. Comparison of the performance (a) and the number of moldy core apples incorrectly identified as healthy (b) of the six discriminant models
Fig. 4. VIP score distribution of PLS-DA model
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Table 1. Appearance parameter statistics of healthy fruit and fruit with moldy core
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Table 2. Comparison of three discriminant modeling results of LDA, MD and KNN based on PCs extracted from transmission spectra (600~900 nm) of apples with four types of posture
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Table 3. PLS-DA results using transmission spectra (600~900 nm) of apples with 4 types of posture
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Table 4. Comparison of two modeling results of ELM and SVM using transmission spectra (600~900 nm) of apples with 4 types of posture
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Table 5. PLS-DA results using transmission spectra (690~720 nm) of apples with 4 types of posture
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