mirror of
https://github.com/wassname/scikit-image.git
synced 2026-06-28 19:49:17 +08:00
Ankit Agrawal
33 lines
1.1 KiB
Python
33 lines
1.1 KiB
Python
import numpy as np
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from numpy.testing import assert_array_equal
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from skimage.feature.util import pairwise_hamming_distance
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def test_pairwise_hamming_distance_range():
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"""Values of all the pairwise hamming distances should be in the range
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[0, 1]."""
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a = np.random.random_sample((10, 50)) > 0.5
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b = np.random.random_sample((20, 50)) > 0.5
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dist = pairwise_hamming_distance(a, b)
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assert np.all((0 <= dist) & (dist <= 1))
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def test_pairwise_hamming_distance_value():
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"""The result of pairwise_hamming_distance of two fixed sets of boolean
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vectors should be same as expected."""
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np.random.seed(10)
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a = np.random.random_sample((4, 100)) > 0.5
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np.random.seed(20)
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b = np.random.random_sample((3, 100)) > 0.5
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result = pairwise_hamming_distance(a, b)
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expected = np.array([[0.5 , 0.49, 0.44],
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[0.44, 0.53, 0.52],
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[0.4 , 0.55, 0.5 ],
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[0.47, 0.48, 0.57]])
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assert_array_equal(result, expected)
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if __name__ == '__main__':
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from numpy import testing
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testing.run_module_suite()
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