基于近红外光谱技术和人工神经网络的玉米品种鉴别方法研究

doi:10.3964/j.issn.1000-0593.2008.08.026

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Abstract A new non-destructive and rapid method was developed to discriminate varieties of corn seeds.The method is based on near-infrared reflectance spectroscopy (NIRS) and artificial neural network (ANN).The corn seeds used for this study involved four varieties：Gaoyou115, Nongda368, Nongda108 and Nongda4 967.After collecting the near-infrared reflectance spectrum of each single seed in the range between 1 000 and 2 632 nm, the principal component analysis (PCA) was used to compress the NIR spectra, which had been preprocessed with Savitky-Golay and multiplicative scatter correction (MSC).The analysis results showed that the cumulate reliabilities of PC1 to PC8 (the first eight principal components) were 99.602%.A three-layer back-propagation neural network (BPNN) was developed for classification, which was trained by the Levenberg-Marquard algorithm to improve the network training speed and efficiency.The LMBP was activated by the sigmoid function, and normalization of targets was used to get the best discrimination result of network.The first eight principal components of the samples were applied as LMBPNN inputs, and the values of the type of corn seeds were applied as the outputs.In this model, 120 kernels were used as the training data set and 40 kernels were used as the test data set.Calculation results showed that the distinguishing rate of the four corn seed varieties was 95%.This model is reliable and practicable.The results demonstrated that this identification method was rapid and non-destructive, and could be used for classification.

Key words：Near infrared spectra (NIRS);Principal component analysis (PCA);Artificial neural network(ANN);Corn seed;Discrimination

Received: 2007-05-26 Accepted: 2007-08-28

ZTFLH:

O657.3

Corresponding Authors: CHEN Jian E-mail: gxy5@cau.edu.cn

Cite this article:

CHEN Jian,CHEN Xiao,LI Wei, et al. Study on Discrimination of Corn Seed Based on Near-Infrared Spectra and Artificial Neural Network Model[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2008, 28(08): 1806-1809.

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http://www.gpxygpfx.com/EN/10.3964/j.issn.1000-0593.2008.08.026 OR http://www.gpxygpfx.com/EN/Y2008/V28/I08/1806

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