Abstract：A frequency selection method of NIR spectroscopy was proposed in the present paper for discrimination of maize seed varieties. A criterion function was defined to evaluate the discriminative ability of NIR spectroscopy at different frequencies, and then features of maize seed varieties were extracted accordingly for further processing. By eliminating correlation between features at different frequencies, the selected features are guaranteed to contain as much information of inter-variety difference as possible. Also, features with larger variances are preferred to suppress the impact of noise. Experiment results demonstrate that our frequency selection method can achieve high recognition rate with less spectroscopy features than traditional methods. Specifically, a recognition rate as high as 94.16% can be attained with NIR spectroscopy with only 30 frequencies. Simulation results show that recognition rate of NIR spectroscopy at selected frequencies is stable with small disturbance of frequencies, which verifies the robustness of the authors’ method.
陈新亮，王徽蓉，李卫军*，来疆亮 . 一种用于玉米品种鉴别的近红外光谱频率选择方法 [J]. 光谱学与光谱分析, 2010, 30(11): 2919-2922.
CHEN Xin-liang, WANG Hui-rong, LI Wei-jun*, LAI Jiang-liang . A Frequency Selection Method of NIR Spectroscopy for Discrimination of Maize Seed Varieties . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(11): 2919-2922.
[1] HUANG Min, HE Yong, HUANG Ling-xia, et al(黄 敏，何 勇，黄凌霞，等). Journal of Infrared and Millimeter Waves(红外与毫米波学报), 2006, 25(5): 342. [2] DING Nian-ya, LI Wei, FENG Xin-wei, et al(丁念亚，黎 薇，冯昕韡，等). Computers and Applied Chemistry(计算机与应用化学), 2008, 25(4): 499. [3] GUO Ting-ting, WU Wen-jin, SU Qian, et al(郭婷婷，邬文锦，苏 谦，等). Transactions of the Chinese Society of Agricultural Machinery(农业机械学报), 2009, 40(z1): 87. [4] WANG Shou-jue(王守觉). Acta Electronica Sinica(电子学报), 2002, 30(10): 1417. [5] WANG Shou-jue, WANG Bai-nan(王守觉，王柏南). Acta Electronica Sinica(电子学报), 2002, 30(1): 1. [6] CAO Yu, ZHAO Xing-tao(曹 宇，赵星涛). Acta Electronica Sinica(电子学报), 2004, 32(10): 1671. [7] WANG Shou-jue, XU Jian(王守觉, 徐 健). Acta Electronica Sinica(电子学报), 2003, 31(1): 1. [8] WANG Shou-jue, QU Yan-feng, LI Wei-jun, et al(王守觉，曲延锋，李卫军，等). Acta Electronica Sinica(电子学报), 2004, 32(7): 1057. [9] CHU Xiao-li, YUAN Hong-fu, LU Wan-zhen(褚小立，袁洪福，陆婉珍). Progress in Chemistry(化学进展)，2004, 16(4): 528. [10] HAN Liang-liang, MAO Pei-sheng, WANG Xin-guo, et al(韩亮亮，毛培胜，王新国，等). Journal of Infrared and Millimeter Waves(红外与毫米波学报), 2008, 27(2): 86. [11] ZHAO Jie-wen, ZHANG Hai-dong, LIU Mu-hua(赵杰文，张海东，刘木华). Transactions of the Chinese Society of Agricultural Engineering(农业工程学报), 2005, 21(3): 162.
