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Fix Gaussian kernels in hessian_matrix

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This commit is contained in:
Johannes Schönberger
2016-01-20 22:11:23 +01:00
parent ce4bc59c11
commit 6fd0cecffd
2 changed files with 33 additions and 30 deletions
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skimage/feature/tests/test_corner.py
+25 -25
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@@ -42,21 +42,21 @@ def test_hessian_matrix():
square = np.zeros((5, 5))
square[2, 2] = 1
Hxx, Hxy, Hyy = hessian_matrix(square, sigma=0.1)
assert_array_equal(Hxx, np.array([[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 1, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0]]))
assert_array_equal(Hxy, np.array([[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0]]))
assert_array_equal(Hyy, np.array([[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 1, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0]]))
assert_almost_equal(Hxx, np.array([[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, -1591.549431, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0]]))
assert_almost_equal(Hxy, np.array([[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0]]))
assert_almost_equal(Hyy, np.array([[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, -1591.549431, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0]]))
def test_structure_tensor_eigvals():
@@ -81,16 +81,16 @@ def test_hessian_matrix_eigvals():
square[2, 2] = 1
Hxx, Hxy, Hyy = hessian_matrix(square, sigma=0.1)
l1, l2 = hessian_matrix_eigvals(Hxx, Hxy, Hyy)
assert_array_equal(l1, np.array([[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 1, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0]]))
assert_array_equal(l2, np.array([[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 1, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0]]))
assert_almost_equal(l1, np.array([[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, -1591.549431, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0]]))
assert_almost_equal(l2, np.array([[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, -1591.549431, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0]]))
@test_parallel()