mirror of
https://github.com/wassname/scikit-image.git
synced 2026-06-29 05:35:03 +08:00
Tony S Yu
152 lines
4.9 KiB
Python
152 lines
4.9 KiB
Python
import sys
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import os.path
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import numpy as np
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from numpy.testing import *
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from numpy.testing.decorators import skipif
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from skimage import data_dir
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from skimage.io import ImageCollection, MultiImage
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from skimage.io.collection import alphanumeric_key
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from skimage.io import Image as ioImage
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try:
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from PIL import Image
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except ImportError:
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PIL_available = False
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else:
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PIL_available = True
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if sys.version_info[0] > 2:
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basestring = str
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class TestAlphanumericKey():
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def setUp(self):
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self.test_string = 'z23a'
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self.test_str_result = ['z', 23, 'a']
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self.filenames = ['f9.10.png', 'f9.9.png', 'f10.10.png', 'f10.9.png',
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'e9.png', 'e10.png', 'em.png']
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self.sorted_filenames = \
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['e9.png', 'e10.png', 'em.png', 'f9.9.png', 'f9.10.png',
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'f10.9.png', 'f10.10.png']
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def test_string_split(self):
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assert_equal(alphanumeric_key(self.test_string), self.test_str_result)
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def test_string_sort(self):
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sorted_filenames = sorted(self.filenames, key=alphanumeric_key)
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assert_equal(sorted_filenames, self.sorted_filenames)
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class TestImageCollection():
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pattern = [os.path.join(data_dir, pic) for pic in ['camera.png',
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'color.png']]
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pattern_matched = [os.path.join(data_dir, pic) for pic in
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['camera.png', 'moon.png']]
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def setUp(self):
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self.collection = ImageCollection(self.pattern)
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self.collection_matched = ImageCollection(self.pattern_matched)
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def test_len(self):
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assert len(self.collection) == 2
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def test_getitem(self):
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num = len(self.collection)
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for i in range(-num, num):
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assert type(self.collection[i]) is ioImage
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assert_array_almost_equal(self.collection[0],
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self.collection[-num])
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#assert_raises expects a callable, hence this do-very-little func
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def return_img(n):
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return self.collection[n]
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assert_raises(IndexError, return_img, num)
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assert_raises(IndexError, return_img, -num - 1)
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def test_slicing(self):
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assert type(self.collection[:]) is ImageCollection
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assert len(self.collection[:]) == 2
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assert len(self.collection[:1]) == 1
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assert len(self.collection[1:]) == 1
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assert_array_almost_equal(self.collection[0], self.collection[:1][0])
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assert_array_almost_equal(self.collection[1], self.collection[1:][0])
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assert_array_almost_equal(self.collection[1], self.collection[::-1][0])
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assert_array_almost_equal(self.collection[0], self.collection[::-1][1])
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def test_files_property(self):
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assert isinstance(self.collection.files, list)
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def set_files(f):
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self.collection.files = f
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assert_raises(AttributeError, set_files, 'newfiles')
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def test_custom_load(self):
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load_pattern = [(1, 'one'), (2, 'two')]
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def load_fn(x):
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return x
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ic = ImageCollection(load_pattern, load_func=load_fn)
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assert_equal(ic[1], (2, 'two'))
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def test_concatenate(self):
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ar = self.collection_matched.concatenate()
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assert_equal(ar.shape, (len(self.collection_matched),) +
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self.collection[0].shape)
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assert_raises(ValueError, self.collection.concatenate)
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class TestMultiImage():
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def setUp(self):
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# This multipage TIF file was created with imagemagick:
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# convert im1.tif im2.tif -adjoin multipage.tif
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if PIL_available:
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self.img = MultiImage(os.path.join(data_dir, 'multipage.tif'))
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@skipif(not PIL_available)
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def test_len(self):
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assert len(self.img) == 2
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@skipif(not PIL_available)
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def test_getitem(self):
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num = len(self.img)
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for i in range(-num, num):
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assert type(self.img[i]) is np.ndarray
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assert_array_almost_equal(self.img[0],
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self.img[-num])
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#assert_raises expects a callable, hence this do-very-little func
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def return_img(n):
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return self.img[n]
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assert_raises(IndexError, return_img, num)
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assert_raises(IndexError, return_img, -num - 1)
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@skipif(not PIL_available)
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def test_files_property(self):
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assert isinstance(self.img.filename, basestring)
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def set_filename(f):
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self.img.filename = f
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assert_raises(AttributeError, set_filename, 'newfile')
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@skipif(not PIL_available)
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def test_conserve_memory_property(self):
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assert isinstance(self.img.conserve_memory, bool)
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def set_mem(val):
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self.img.conserve_memory = val
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assert_raises(AttributeError, set_mem, True)
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@skipif(not PIL_available)
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def test_concatenate(self):
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ar = self.img.concatenate()
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assert_equal(ar.shape, (len(self.img),) +
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self.img[0].shape)
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if __name__ == "__main__":
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run_module_suite()
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