玉米病害病斑图像信息提取与滤波对信息的影响

Distilling Information and Effect of Filters to Lesion Images Information of Corn Disease

玉米病害病斑图像处理结果表明,不同病斑图像像素、RGB色彩分解和水平集有明显的差异。病斑图像直方图中有一个明显的合成高峰。滤波后对比表明,各特性发生明显变化,典型病斑图像水平集有一定的稳定性,病斑图像直方图高峰基本不变,透光图像直方图高峰减少到一个。这些信息的获得,为遥感技术监控玉米病害提供了帮助。

There are remarkably different between the pixels,RGB and level-sets of different lesion images of corn disease though image processing.The one peak of histogram of lesion images is likely stability under any condition,which can reflect characters of Gray Leaf Spot,Northern Leaf Blight,and Leaf Spot of Curvularia Lunata on corn.But there were two peaks of histogram of lesion image screened by backlighting.The characters of pixels,RGB,level-sets and histogram changed after different filtering the lesion images.There was only one peaks of histogram of lesion images including screened by backlighting.The level-set and the peak of histogram of lesion images have stability in some conditions or being filter.It can provide a reference for controlling and managing corn disease by remote sensing.