mirror of
https://github.com/wassname/scikit-image.git
synced 2026-06-29 17:53:25 +08:00
Johannes Schönberger
71 lines
2.1 KiB
Python
71 lines
2.1 KiB
Python
import numpy as np
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from numpy import testing
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from skimage import data, color
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from skimage.util import img_as_bool
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from skimage.morphology import binary, grey, selem
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lena = color.rgb2gray(data.lena())
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bw_lena = lena > 100
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def test_non_square_image():
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strel = selem.square(3)
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binary_res = binary.binary_erosion(bw_lena[:100, :200], strel)
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grey_res = img_as_bool(grey.erosion(bw_lena[:100, :200], strel))
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testing.assert_array_equal(binary_res, grey_res)
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def test_selem_overflow():
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strel = np.ones((17, 17), dtype=np.uint8)
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img = np.zeros((20, 20))
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img[2:19, 2:19] = 1
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binary_res = binary.binary_erosion(img, strel)
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grey_res = img_as_bool(grey.erosion(img, strel))
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testing.assert_array_equal(binary_res, grey_res)
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def test_selem_overflow_exception():
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strel = np.ones((17, 17), dtype=np.uint8)
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img = np.zeros((20, 20))
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img[2:19, 2:19] = 1
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out = np.zeros((20, 20), dtype=np.uint8)
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testing.assert_raises(ValueError, binary.binary_erosion, img, strel, out)
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out = np.zeros((20, 20), dtype=np.uint16)
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binary_res = binary.binary_erosion(img, strel, out=out)
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grey_res = img_as_bool(grey.erosion(img, strel))
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testing.assert_array_equal(binary_res, grey_res)
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def test_binary_erosion():
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strel = selem.square(3)
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binary_res = binary.binary_erosion(bw_lena, strel)
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grey_res = img_as_bool(grey.erosion(bw_lena, strel))
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testing.assert_array_equal(binary_res, grey_res)
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def test_binary_dilation():
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strel = selem.square(3)
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binary_res = binary.binary_dilation(bw_lena, strel)
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grey_res = img_as_bool(grey.dilation(bw_lena, strel))
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testing.assert_array_equal(binary_res, grey_res)
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def test_binary_closing():
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strel = selem.square(3)
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binary_res = binary.binary_closing(bw_lena, strel)
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grey_res = img_as_bool(grey.closing(bw_lena, strel))
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testing.assert_array_equal(binary_res, grey_res)
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def test_binary_opening():
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strel = selem.square(3)
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binary_res = binary.binary_opening(bw_lena, strel)
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grey_res = img_as_bool(grey.opening(bw_lena, strel))
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testing.assert_array_equal(binary_res, grey_res)
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if __name__ == '__main__':
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testing.run_module_suite()
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