Color Analysis of Leaf Images of Deficiencies and Excess Nitrogen Content in Soybean Leaves

Lili Ma, Junlong Fang, Yuehua Chen, Shuipeng Gong
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引用次数: 20

Abstract

Abstract-Deficiencies and excess of soybean's plant nitrogen is the key of soybean nutritional diagnosis. Applying image processing technique, this paper studied the leaf images of the six stages of soybean growth, which nitrogen fertilizer applied were 0%, 50%, 100% and 150%. Using image preprocessing, the noise of source image was removed and the areas of interest were enhanced, leaves and background were separated using minimum error threshold method. The color characters of soybean leaves were analyzed using the RGB and the HSI model. The standard of distinction between normal and excessive loss of soybean leaves was found, which proved technical basis of the diagnosis of deficiencies and excess of soybean's plant nitrogen.
大豆缺氮和过量叶片图像的颜色分析
摘要/ abstract摘要:大豆植株氮素的亏缺和过剩是大豆营养诊断的关键。应用图像处理技术,对施氮量分别为0%、50%、100%和150%的大豆生长6个阶段的叶片图像进行了研究。通过图像预处理,去除源图像的噪声,增强感兴趣区域,采用最小误差阈值法分离树叶和背景。采用RGB和HSI模型对大豆叶片的颜色特性进行了分析。建立了大豆叶片正常损失与过度损失的判别标准,为诊断大豆植株氮素不足和过量提供了技术依据。
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