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双通道近地遥感图像采集处理系

, PP. 210-213

Keywords: 近地遥感,多光谱相机,图像分割,反射率提取

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Abstract:

利用2-CCD多光谱相机设计了近地遥感图像采集平台,同步获取小范围区域作物的可见光和NIR图像,通过图像处理技术从作物图像获得反射光谱信息。采集平台包括一个2-CCD多光谱相机,两个采集盒,一台具有两个千兆网口的田间计算机。图像处理部分通过2G-R-B灰度化、中值滤波和Otsu二值化,从背景中分割出作物图像,结合作物原始R分量灰度图像,提取出作物红光图像平均灰度值,利用建立的灰度值与反射率的线性模型,计算得到作物红光波段的反射率。试验结果表明,图像采集平台工作稳定,利用图像处理方法提取的反射率与ASD光谱仪测量结果有较好相关性,为从作物冠层图像探测生长状况提供了理论依据。

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