Recognition of Corn Seeds Based on Pattern Recognition and Near Infrared Spectroscopy Technology
LIU Tian-ling1, SU Qi-ya1, SUN Qun2, YANG Li-ming1*
1. College of Science, China Agricultural University, Beijing 100083, China 2. College of Agriculture and Biotechnology, China Agricultural University, Beijing 100193, China
Abstract：Pattern recognition technology and data mining methods have become a hot topic in chemometrics. Near infrared (NIR) spectroscopic analysis has been widely used in spectrum signal processing and modeling since it has advantages of quickness, simplicity and nondestructiveness. Based on five different methods of pattern recognition, namely the locally linear embedding (LLE), wavelet transform (WT), principal component analysis (PCA), partial least squares (PLS) and support vector machine (SVM), the pattern recognition system for corn seeds was proposed using NIR technology, and applied to classification of 108 hybrid samples and 178 female samples for corn seeds. Firstly, we get rid of noise or reduce the dimension using LLE, WT, PCA, PLS, and then use SVM to identify two-class samples. In the meantime, 1-norm SVM is the method of direct classification and identification. Experimental results of three different spectral regions show that the performances of three methods: PCA+SVM, LLE+SVM, PLS+SVM are superior to WT+SVM and 1-norm SVM methods, and obtain a high classification accuracy, which indicates the feasibility and effectiveness of the proposed methods. Moreover, this investigation provides the theoretical support and practical method for recognition of corn seeds utilizing near infrared spectral data.
Key words：Near infrared spectrum analysis;Locally linear embedding;Wavelet transform;Principal component analysis;Partial least squares;Support vector machine
刘天玲1，苏琪雅1，孙 群2，杨丽明1* . 基于NIR分析和模式识别技术的玉米种子识别系统 [J]. 光谱学与光谱分析, 2012, 32(05): 1209-1212.
LIU Tian-ling1, SU Qi-ya1, SUN Qun2, YANG Li-ming1* . Recognition of Corn Seeds Based on Pattern Recognition and Near Infrared Spectroscopy Technology . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(05): 1209-1212.
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