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Add test case for bilateral filters

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Johannes Schönberger
2013-06-30 12:57:29 +02:00
parent ce792d5e1a
commit f74c073da1
1 changed files with 18 additions and 6 deletions
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skimage/filter/rank/tests/test_rank.py
+18 -6
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@@ -356,13 +356,11 @@ def test_otsu():
# test the local Otsu segmentation on a synthetic image
# (left to right ramp * sinus)
test = np.tile(
[128, 145, 103, 127, 165, 83, 127, 185, 63, 127, 205, 43,
127, 225, 23, 127],
(16, 1))
test = np.tile([128, 145, 103, 127, 165, 83, 127, 185, 63, 127, 205, 43,
127, 225, 23, 127],
(16, 1))
test = test.astype(np.uint8)
res = np.tile([1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1],
(16, 1))
res = np.tile([1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1], (16, 1))
selem = np.ones((6, 6), dtype=np.uint8)
th = 1 * (test >= rank.otsu(test, selem))
assert_array_equal(th, res)
@@ -439,5 +437,19 @@ def test_16bit():
assert rank.mean(image, selem)[10, 10] == value / selem.size
def test_bilateral():
image = np.zeros((21, 21), dtype=np.uint16)
selem = np.ones((3, 3), dtype=np.uint8)
image[10, 10] = 1000
image[10, 11] = 1010
image[10, 9] = 900
assert rank.bilateral_mean(image, selem, s0=1, s1=1)[10, 10] == 1000
assert rank.bilateral_pop(image, selem, s0=1, s1=1)[10, 10] == 1
assert rank.bilateral_mean(image, selem, s0=11, s1=11)[10, 10] == 1005
assert rank.bilateral_pop(image, selem, s0=11, s1=11)[10, 10] == 2
if __name__ == "__main__":
run_module_suite()