编制一个一维和二维中值滤波器。在该滤波器中充分考虑影像的边缘，设置一个固定大小的模板进行一维和二维中值滤波。-This is the code of a one-dimensional and two-dimensional median filter.Given the full consideration to the edge of the image in the filter, then set a fixed size of the template to deal with one