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Recognition of wheat preharvest sprouting based on hyperspectral imaging

文献类型： 外文期刊

作者： Wu, Qiong 1 ; Zhu, Dazhou 2 ; Wang, Cheng 2 ; Ma, Zhihong 2 ; Wang, Jihua 1 ;

作者机构： 1.Jilin Univ, Sch Biol & Agr Engn, Changchun 130022, Peoples R China

2.Beijing Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China

关键词： hyperspectral imaging;preharvest sprouting;machine vision;wheat

期刊名称：OPTICAL ENGINEERING （ 影响因子：1.084； 五年影响因子：1.098 ）

ISSN： 0091-3286

年卷期： 2012 年 51 卷 11 期

页码：

收录情况： SCI

摘要： An imaging spectrometer was used to acquire hyperspectral images of 120 strains of wheat ears and seeds under four different watering treatments. Whether wheat preharvest sprouting occurred could be reflected by spectral characteristics. Therefore, it was possible to judge whether wheat ears sprouted according to changes of spectral curve at 675 nm. According to principal component analysis of mean spectral reflectivity values of wheat seeds, it was found that wheat seeds watered three times every day and wheat seeds watered once every day were significantly different from nonsprouting wheat seeds soaked all day and original dry seeds due to significant sprouting situations, suggesting that imaging spectra can differentiate different extent of wheat preharvest sprouting. Glume had an influence on the hyperspectral images of wheat ears, therefore the hyperspectral images of wheat ears could be used to measure sprouting only when serious sprouting occurred. At an early stage of sprouting, only the hyperspectral images of wheat seeds could be used to analyze the sprouting of wheat. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.51.11.111710]

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