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棉花学报  2013 

OTSU最佳阈值法在棉花幼苗识别中的应用研究

DOI: 1002-7807(2013)01-0086-04, PP. 86-89

Keywords: 灰度转化,OTSU法,去骨刺,模板匹配

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Abstract:

棉花幼苗的识别与分离是实现自动化移栽的关键步骤,本文用视觉图像处理技术对棉花幼苗的识别进行了研究。对于用摄像头获取的棉花幼苗图像,在分析棉花幼苗及背景颜色的基础上,采用了OTSU法将表征在RGB颜色空间内的彩色图像转化为灰度图像,并使用非线性滤波法对灰度图像进行去噪处理,通过最大类间方差法选取了最佳分割阈值,将灰度图像转化为二值化图像。为了更好地提取并识别棉花幼苗特征,又细化处理了二值化图像,设计了去骨刺处理,消除了细化后图像骨刺对特征识别的影响,并且使用了加权模板匹配法,设计了防误判匹配法则。应用这些方法,实现了棉花幼苗的识别,说明用图像处理方法识别棉花幼苗是完全可行的。

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