Otsu算法在大田油菜分割中的应用研究

Research and Application of Otsu Algorithm in Rapeseed Segmentation

Otsu算法是根据图像的灰度直方图,采用最小二乘法原理来自动获取全局阈值的一种算法,对大田油菜具有一定的分割作用。但是,对油菜的分割效果并不是很好。通过最佳的颜色指数来确定分割油菜的全局阈值,最后对大田油菜进行Otsu阈值分割。经过实验验证,选取过红指数来确定的全局阈值对大田油菜Otsu阈值分割效果更好,失真不明显。

Using the principle of least squares method to automatically obtain the global threshold,based on the histogram of the image grayscale,Otsu algorithm has a certain segmentation of an algorithm for the field Rape.However,its segmentation effect is very poor.The global threshold is obtained for rapeseed by optimal color index,finally it realized the Otsu threshold segmentation of field rapeseed.After experimental verification,by selecting the red index is better for Otsu threshold segmentation of the field Rape and the distortion is not obvious.