skimage.filters.median has no problems for Fig 1, but errors of filter footprint array has incorrect shape for Fig 2. What is the reason?
from skimage import io, filters
import skimage.morphology as morph
import matplotlib.pyplot as plt
im = io.imread("test.png")
im = filters.median(im, morph.disk(5))
fig, ax = plt.subplots()
ax.imshow(im, cmap='gray')