def test_grey_erode():
from mahotas.tests.pymorph_copy import erode as slow_erode
from mahotas.tests.pymorph_copy import dilate as slow_dilate
np.random.seed(334)
for i in range(8):
f = np.random.random_sample((128,128))
f *= 255
f = f.astype(np.uint8)
B = (np.random.random_sample((3,3))*255).astype(np.uint8)
B //= 4
fast = mahotas.erode(f,B)
slow = slow_erode(f,B)
# mahotas & pymorph use different border conventions.
assert np.all(fast[1:-1,1:-1] == slow[1:-1,1:-1])
fast = mahotas.dilate(f,B)
slow = slow_dilate(f,B)
# mahotas & pymorph use different border conventions.
assert np.all(fast[1:-1,1:-1] == slow[1:-1,1:-1])
def test_grey_erode():
from mahotas.tests.pymorph_copy import erode as slow_erode
from mahotas.tests.pymorph_copy import dilate as slow_dilate
np.random.seed(334)
for i in range(8):
f = np.random.random_sample((128, 128))
f *= 255
f = f.astype(np.uint8)
B = (np.random.random_sample((3, 3)) * 255).astype(np.uint8)
B //= 4
fast = mahotas.erode(f, B)
slow = slow_erode(f, B)
# mahotas & pymorph use different border conventions.
assert np.all(fast[1:-1, 1:-1] == slow[1:-1, 1:-1])
fast = mahotas.dilate(f, B)
slow = slow_dilate(f, B)
# mahotas & pymorph use different border conventions.
assert np.all(fast[1:-1, 1:-1] == slow[1:-1, 1:-1])