辣椒、水稻与烤烟叶片反射光谱特征的比较研究
摘要: 在350～2500 nm波长范围内研究了辣椒、水稻和烤烟3种作物的叶片光谱特征。结果表明，依据350～2500 nm波段范围内的叶片光谱反射率曲线，可以容易将水稻从辣椒和烤烟中区别出来；辣椒和烤烟能依据350～759 nm以及1554～1775 nm波段的反射率进行区别。根据蓝边幅值 Db ，蓝边位置λb ，黄边幅值 Dy ，红边幅值 Dr ，红边位置λr ，绿峰反射率ρg ，红谷反射率ρr ，比值植被指数 RVI ，归一化植被指数 NDVI ，差值植被指数DVI ，绿波段归一化植被指数 N DVIg 和绿波段比值植被指数 RVIg 12个指标之一或全部可以快速识别水稻；辣椒和烤烟则能依据 Db ，λr ，ρg ，ρr ，RVI ，NDV Ig 和 RVIg 7个指标之一或全部进行识别。这为高光谱技术识别这3种作物提供了依据。
Comparative Study on Leaf Reflectance Spectrum Characteristics of Pepper,Rice,Tobacco
Abstract: The spectral features of leaves from pepper ,rice and tobacco were studied at the resolution in 350~2 500 nm .Results show that ,according to the leaf spectral reflectance curves in 350~2 500 nm ,rice can easily be distinguished from pepper and tobacco ;pepper can be distinguished from tobacco only on the basis of the leaf spectral reflectance in 350~759 nm and 1 554~1 775 nm .Rice can be quickly identified according to one or all of Db ,λb ,Dy ,Dr ,λr ,ρg ,ρr ,RV I ,NDV I ,DV I ,NDV Ig and RV Ig .Pepper and tobacco can be identified only according to one or all of Db ,λr ,ρg ,ρr ,RV I , N DV Ig and RV Ig .
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