26 lines
797 B
Python
26 lines
797 B
Python
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import numpy as np
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from skimage.io._plugins._histograms import histograms
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from skimage._shared.testing import assert_array_equal, assert_equal, TestCase
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class TestHistogram(TestCase):
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def test_basic(self):
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img = np.ones((50, 50, 3), dtype=np.uint8)
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r, g, b, v = histograms(img, 255)
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for band in (r, g, b, v):
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yield assert_equal, band.sum(), 50 * 50
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def test_counts(self):
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channel = np.arange(255).reshape(51, 5)
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img = np.empty((51, 5, 3), dtype='uint8')
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img[:, :, 0] = channel
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img[:, :, 1] = channel
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img[:, :, 2] = channel
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r, g, b, v = histograms(img, 255)
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assert_array_equal(r, g)
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assert_array_equal(r, b)
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assert_array_equal(r, v)
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assert_array_equal(r, np.ones(255))
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