| 近红外玉米品种鉴别系统预处理和波长选择方 |
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| 引用本文： | 郭婷婷,邬文锦,苏谦,王守觉,安冬.近红外玉米品种鉴别系统预处理和波长选择方[J].农业机械学报,2009,40(Z1):87-92. |
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| 作者姓名： | 郭婷婷 邬文锦 苏谦 王守觉 安冬 |
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| 作者单位： | 1. 中国科学院半导体研究所,北京,100083
2. 中国农业大学信息与电气工程学院,北京,100083 |
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| 基金项目： | 国家自然科学基金资助项目，高等学校博士学科点专项科研基金资助项目 |
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| 摘 要： | 以7个品种玉米籽粒的鉴别系统为研究对象,对比研究了6种预处理方法和波长选择对模型鉴别能力的影响.结果表明,在被比较的6种预处理方法中,一阶导数方法能够使模型有更好的鉴别性能.使用一阶导数预处理和全光谱区的模型平均正确识别率和正确拒识率最高,分别为98.6%和98%,有5个品种的模型的正确识别率和正确拒识率都达到了100%.波长选择对一阶导数模型没有明显作用,但能使标准正态变量变换和矢量归一化模型鉴别准确度得到较大提高.
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| 关 键 词： | 近红外光谱 玉米 品种鉴别 预处理 波长选择 |
of Spectral Pretreatment and Wavelength Selection on Discrimination of Maize Seed Varieties by NIR Spectroscopy |
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| Guo Tingting Wu Wenjin Su Qian Wang Shoujue An Dong.of Spectral Pretreatment and Wavelength Selection on Discrimination of Maize Seed Varieties by NIR Spectroscopy[J].Transactions of the Chinese Society of Agricultural Machinery,2009,40(Z1):87-92. |
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| Authors: | Guo Tingting Wu Wenjin Su Qian Wang Shoujue An Dong |
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| Institution: | 1.Institute of Semiconductors;Chinese Academy of Sciences;Beijing 100083;China2.College of Information and Electrical Engineering;China Agricultural University;China |
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| Abstract: | In this paper,we study the effects of wavelength selection and data pretreatments,including no pretreatment,standard normal variate transformation(SNV),vector normalization,smoothing,first and second derivative transformation,on the discrimination of maize seed varieties.The performance of the pretreatment methods is evaluated on the basis of the two data sets: all-range spectral data and the data of the characteristic wavelengths selected by a standard deviation-based feature selection method,respectively.... |
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| Keywords: | Near-infrared spectroscopy Maize Variety discrimination Spectral pretreatment Wavelength selection |
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