中文说明：分别是：调用Matlab内部腐蚀函数实现二值图像和灰度图像的测地膨胀；测地膨胀重建；自己编写的测地膨胀实现原理
English Description：
Are: corrosion within the Matlab function is called GEODESIC expansion of binary images and grayscale images; GEODESIC expansion reconstruction; expanded measurement by writing their own implementation principle