Characteristic Extraction Method and Discriminant Model of Ear Rot of Maize Seed Base on NIR Spectra

Fan-jia MENG; Shi LUO; Yue-feng WU; Hong SUN; Fei LIU; Min-zan LI; Wei HUANG; Mu LI

doi:10.3964/j.issn.1000-0593(2022)06-1716-05

Spectroscopy and Spectral Analysis, Volume. 42, Issue 6, 1716(2022)

Characteristic Extraction Method and Discriminant Model of Ear Rot of Maize Seed Base on NIR Spectra

Fan-jia MENG^1、*, Shi LUO^1、1;, Yue-feng WU^1、1;, Hong SUN^1、1;, Fei LIU^2、2;, Min-zan LI^{1、1; *;}, Wei HUANG^3、3;, and Mu LI^3、3;

Author Affiliations

¹1. Key Laboratory of Modern Precision Agriculture System Integration Research, China Agricultural University, Beijing 100083, China

²2. College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China

³3. Maize Research Institute, Jilin Academy of Agricultural Sciences, Changchun 130033, China

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Figures & Tables(8)

Fig. 1. Test samples

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Fig. 2. Original spectra (a) and preprocessed by MSC (b)

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Fig. 3. Near infrared spectra of maize seed in 4 optimal wavelength ranges

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Fig. 4. Correlation coefficient from NIR full-band spectral data

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Fig. 5. SPA feature extraction

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Fig. 6. CARS feature extraction

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Table 1. Data set partitioning results
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Table 1. Data set partitioning results
训练集测试集
正常玉米种子 106 44
染病玉米种子 66 30

Table 2. Comparison of discriminant models
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Table 2. Comparison of discriminant models
特征波长
提取区间判别模型特征
波长数训练集准确
率/% 测试集准确
率/%
CA-SVM 4 92.44 93.24
优选区间 SPA-SVM 5 91.86 94.59
CARS-SVM 10 90.69 93.24

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Fan-jia MENG, Shi LUO, Yue-feng WU, Hong SUN, Fei LIU, Min-zan LI, Wei HUANG, Mu LI. Characteristic Extraction Method and Discriminant Model of Ear Rot of Maize Seed Base on NIR Spectra[J]. Spectroscopy and Spectral Analysis, 2022, 42(6): 1716

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