mirror of
https://github.com/wassname/scikit-image.git
synced 2026-07-13 17:45:20 +08:00
Nelle Varoquaux
119 lines
4.1 KiB
Python
119 lines
4.1 KiB
Python
import os.path
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import numpy as np
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from numpy.testing import *
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from skimage import data_dir
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from skimage.io import imread
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from skimage import data_dir
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from skimage.morphology import *
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lena = np.load(os.path.join(data_dir, 'lena_GRAY_U8.npy'))
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class TestMorphology():
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def morph_worker(self, img, fn, morph_func, strel_func):
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matlab_results = np.load(os.path.join(data_dir, fn))
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k = 0
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for arrname in sorted(matlab_results):
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expected_result = matlab_results[arrname]
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mask = strel_func(k)
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actual_result = morph_func(lena, mask)
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assert_equal(expected_result, actual_result)
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k = k + 1
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def test_erode_diamond(self):
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self.morph_worker(lena, "diamond-erode-matlab-output.npz",
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greyscale_erode, diamond)
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def test_dilate_diamond(self):
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self.morph_worker(lena, "diamond-dilate-matlab-output.npz",
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greyscale_dilate, diamond)
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def test_open_diamond(self):
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self.morph_worker(lena, "diamond-open-matlab-output.npz",
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greyscale_open, diamond)
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def test_close_diamond(self):
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self.morph_worker(lena, "diamond-close-matlab-output.npz",
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greyscale_close, diamond)
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def test_tophat_diamond(self):
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self.morph_worker(lena, "diamond-tophat-matlab-output.npz",
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greyscale_white_top_hat, diamond)
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def test_bothat_diamond(self):
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self.morph_worker(lena, "diamond-bothat-matlab-output.npz",
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greyscale_black_top_hat, diamond)
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def test_erode_disk(self):
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self.morph_worker(lena, "disk-erode-matlab-output.npz",
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greyscale_erode, disk)
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def test_dilate_disk(self):
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self.morph_worker(lena, "disk-dilate-matlab-output.npz",
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greyscale_dilate, disk)
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def test_open_disk(self):
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self.morph_worker(lena, "disk-open-matlab-output.npz",
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greyscale_open, disk)
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def test_close_disk(self):
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self.morph_worker(lena, "disk-close-matlab-output.npz",
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greyscale_close, disk)
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class TestEccentricStructuringElements():
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def setUp(self):
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self.black_pixel = 255 * np.ones((4, 4), dtype=np.uint8)
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self.black_pixel[1, 1] = 0
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self.white_pixel = 255 - self.black_pixel
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self.selems = [square(2), rectangle(2, 2),
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rectangle(2, 1), rectangle(1, 2)]
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def test_dilate_erode_symmetry(self):
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for s in self.selems:
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c = greyscale_erode(self.black_pixel, s)
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d = greyscale_dilate(self.white_pixel, s)
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assert np.all(c == (255 - d))
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def test_open_black_pixel(self):
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for s in self.selems:
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grey_open = greyscale_open(self.black_pixel, s)
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assert np.all(grey_open == self.black_pixel)
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def test_close_white_pixel(self):
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for s in self.selems:
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grey_close = greyscale_close(self.white_pixel, s)
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assert np.all(grey_close == self.white_pixel)
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def test_open_white_pixel(self):
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for s in self.selems:
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assert np.all(greyscale_open(self.white_pixel, s) == 0)
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def test_close_black_pixel(self):
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for s in self.selems:
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assert np.all(greyscale_close(self.black_pixel, s) == 255)
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def test_white_tophat_white_pixel(self):
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for s in self.selems:
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tophat = greyscale_white_top_hat(self.white_pixel, s)
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assert np.all(tophat == self.white_pixel)
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def test_black_tophat_black_pixel(self):
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for s in self.selems:
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tophat = greyscale_black_top_hat(self.black_pixel, s)
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assert np.all(tophat == (255 - self.black_pixel))
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def test_white_tophat_black_pixel(self):
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for s in self.selems:
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tophat = greyscale_white_top_hat(self.black_pixel, s)
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assert np.all(tophat == 0)
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def test_black_tophat_white_pixel(self):
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for s in self.selems:
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tophat = greyscale_black_top_hat(self.white_pixel, s)
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assert np.all(tophat == 0)
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