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Pepper seed variety identification based on visible/near infrared spectral technology

文献类型： 外文期刊

作者： Li, Cuiling 1 ; Wang, Xiu 1 ; Meng, Zhijun 1 ; Fan, Pengfei 1 ; Cai, Jichen 1 ;

作者机构： 1.Beijing Res Ctr Intelligent Equipment Agr, Beijing 100097, Peoples R China

2.Natl Res Ctr Intelligent Equipment Agr, Beijing 100097, Peoples R China

关键词： Pepper seed;visible/near infrared spectral technology;principal component analysis;linear discriminant analysis

期刊名称：INFRARED, MILLIMETER-WAVE, AND TERAHERTZ TECHNOLOGIES IV

ISSN： 0277-786X

年卷期： 2016 年 10030 卷

页码：

收录情况： SCI

摘要： Pepper is a kind of important fruit vegetable, with the expansion of pepper hybrid planting area, detection of pepper seed purity is especially important. This research used visible/near infrared (VIS/NIR) spectral technology to detect the variety of single pepper seed, and chose hybrid pepper seeds "Zhuo Jiao NO.3", "Zhuo Jiao NO. 4" and "Zhuo Jiao NO. 5" as research sample. VIS/NIR spectral data of 80 "Zhuo Jiao NO. 3", 80 "Zhuo Jiao NO. 4" and 80 "Zhuo Jiao NO. 5" pepper seeds were collected, and the original spectral data was pretreated with standard normal variable (SNV) transform, first derivative (FD), and Savitzky-Golay (SG) convolution smoothing methods. Principal component analysis (PCA) method was adopted to reduce the dimension of the spectral data and extract principal components, according to the distribution of the first principal component (PC1) along with the second principal component(PC2) in the two-dimensional plane, similarly, the distribution of PC1 coupled with the third principal component(PC3), and the distribution of PC2 combined with PC3, distribution areas of three varieties of pepper seeds were divided in each two-dimensional plane, and the discriminant accuracy of PCA was tested through observing the distribution area of samples' principal components in validation set. This study combined PCA and linear discriminant analysis (LDA) to identify single pepper seed varieties, results showed that with the FD preprocessing method, the discriminant accuracy of pepper seed varieties was 98% for validation set, it concludes that using VIS/NIR spectral technology is feasible for identification of single pepper seed varieties.

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