def test_population():
# check the number of valid pixels in the neighborhood
image = np.zeros((5, 5), dtype=np.uint8)
elem = np.ones((3, 3), dtype=np.uint8)
out = np.empty_like(image)
mask = np.ones(image.shape, dtype=np.uint8)
rank.pop(image=image, selem=elem, out=out, mask=mask)
r = np.array([[4, 6, 6, 6, 4], [6, 9, 9, 9, 6], [6, 9, 9, 9, 6],
[6, 9, 9, 9, 6], [4, 6, 6, 6, 4]])
assert_array_equal(r, out)
def test_population():
# check the number of valid pixels in the neighborhood
image = np.zeros((5, 5), dtype=np.uint8)
elem = np.ones((3, 3), dtype=np.uint8)
out = np.empty_like(image)
mask = np.ones(image.shape, dtype=np.uint8)
rank.pop(image=image, selem=elem, out=out, mask=mask)
r = np.array([[4, 6, 6, 6, 4],
[6, 9, 9, 9, 6],
[6, 9, 9, 9, 6],
[6, 9, 9, 9, 6],
[4, 6, 6, 6, 4]])
assert_array_equal(r, out)