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Add tests for discontiguous out arrays in grey morpho

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Juan Nunez-Iglesias
2014-11-04 15:20:21 +11:00
parent d7fdfebb96
commit 1a3ec0299c
1 changed files with 22 additions and 1 deletions
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skimage/morphology/tests/test_grey.py
+22 -1
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@@ -6,7 +6,6 @@ from scipy import ndimage
import skimage
from skimage import data_dir
from skimage.util import img_as_bool
from skimage.morphology import grey, selem
@@ -247,5 +246,27 @@ def test_inplace():
testing.assert_raises(NotImplementedError, f, image, selem, out=out)
def test_discontiguous_out_array():
image = np.array([[5, 6, 2],
[7, 2, 2],
[3, 5, 1]], np.uint8)
out_array_big = np.zeros((5, 5), np.uint8)
out_array = out_array_big[::2, ::2]
expected_dilation = np.array([[7, 0, 6, 0, 6],
[0, 0, 0, 0, 0],
[7, 0, 7, 0, 2],
[0, 0, 0, 0, 0],
[7, 0, 5, 0, 5]], np.uint8)
expected_erosion = np.array([[5, 0, 2, 0, 2],
[0, 0, 0, 0, 0],
[2, 0, 2, 0, 1],
[0, 0, 0, 0, 0],
[3, 0, 1, 0, 1]], np.uint8)
grey.dilation(image, out=out_array)
testing.assert_array_equal(out_array_big, expected_dilation)
grey.erosion(image, out=out_array)
testing.assert_array_equal(out_array_big, expected_erosion)
if __name__ == '__main__':
testing.run_module_suite()