I wrote the sliding wing in creation.

img = np.array(range(100)).reshape([10,10])
img = np.zeros([100,100])
img[0:50,0:50] = 1

win_size = 2
def SlidingWindow(win_size,img):
  split_img = []
  yx = []
  for i in range(img.shape[0]-win_size+1):
    for j in range(img.shape[1]-win_size+1):
      split_img.append(img[i:i+win_size,j:j+win_size])
      yx.append([i,j])
  all = []
  for img_,yx_ in zip(split_img,yx):
    all = all + [(i+yx_[0],j+yx_[1]) for (i,j) in list(zip(*np.where(img_ == 1)))]
  return Counter(all)
SlidingWindow(4,img)

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