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24 lines
857 B
Python
24 lines
857 B
Python
#!/usr/bin/env python
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import cv2
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from tests_common import NewOpenCVTests
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class shape_test(NewOpenCVTests):
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def test_computeDistance(self):
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a = self.get_sample('samples/data/shape_sample/1.png', cv2.IMREAD_GRAYSCALE);
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b = self.get_sample('samples/data/shape_sample/2.png', cv2.IMREAD_GRAYSCALE);
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_, ca, _ = cv2.findContours(a, cv2.RETR_CCOMP, cv2.CHAIN_APPROX_TC89_KCOS)
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_, cb, _ = cv2.findContours(b, cv2.RETR_CCOMP, cv2.CHAIN_APPROX_TC89_KCOS)
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hd = cv2.createHausdorffDistanceExtractor()
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sd = cv2.createShapeContextDistanceExtractor()
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d1 = hd.computeDistance(ca[0], cb[0])
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d2 = sd.computeDistance(ca[0], cb[0])
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self.assertAlmostEqual(d1, 26.4196891785, 3, "HausdorffDistanceExtractor")
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self.assertAlmostEqual(d2, 0.25804194808, 3, "ShapeContextDistanceExtractor")
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