def test_02_01_angles(self):
'''Test that measurements are stable on i,j swap'''
labels = np.ones((10, 20), int)
np.random.seed(12)
image = np.random.uniform(size=(10, 20)).astype(np.float32)
hi = haralick.Haralick(image, labels, 1, 0)
hj = haralick.Haralick(image.transpose(), labels.transpose(), 0, 1)
for him, hjm in zip(hi.all(), hj.all()):
self.assertEqual(him, hjm)
def test_01_02_mask(self):
'''Test with a masked image'''
labels = np.ones((10, 20), int)
np.random.seed(12)
image = np.random.uniform(size=(10, 20)).astype(np.float32)
image[:, :10] *= .5
mask = np.ones((10, 20), bool)
mask[:, 10:] = False
# Masked haralick
hm = haralick.Haralick(image, labels, 0, 1, mask=mask)
# Expected haralick
he = haralick.Haralick(image[:, :10], labels[:, :10], 0, 1)
for measured, expected in zip(hm.all(), he.all()):
self.assertEqual(measured, expected)
def test_H3(self):
h = haralick.Haralick(gray, labels, 0, 1, nlevels=4)
self.assertAlmostEqual(h.mux, 2.0833, 4)
self.assertAlmostEqual(h.muy, 2.5000, 4)
self.assertAlmostEqual(h.sigmax, 1.0375, 4)
self.assertAlmostEqual(h.sigmay, 0.9574, 4)
self.assertAlmostEqual(h.H3()[0], 0.7970, 4)
def test_H12(self):
h = haralick.Haralick(gray, labels, 0, 1, nlevels=4)
self.assertAlmostEqual(h.H12()[0], -0.5285, 4)
def test_H11(self):
h = haralick.Haralick(gray, labels, 0, 1, nlevels=4)
self.assertAlmostEqual(h.H11()[0], 0.8240, 4)
def test_H9(self):
h = haralick.Haralick(gray, labels, 0, 1, nlevels=4)
self.assertAlmostEqual(h.H9()[0], 1.8637, 4)
def test_H8(self):
h = haralick.Haralick(gray, labels, 0, 1, nlevels=4)
self.assertAlmostEqual(h.H8()[0], 1.7046, 4)
def test_H7(self):
h = haralick.Haralick(gray, labels, 0, 1, nlevels=4)
self.assertAlmostEqual(h.H7()[0], 3.5764, 4)
def test_H6(self):
h = haralick.Haralick(gray, labels, 0, 1, nlevels=4)
self.assertAlmostEqual(h.H6()[0], 4.5833, 4)
def test_all_01(self):
h = haralick.Haralick(gray, labels, 0, 1, nlevels=4)
fv = h.all()
self.assertTrue((np.array(map(len, fv)) == 1).all())