def test_nrmsd_half_filled(self): diff = ImageDiff(self.get_black_image(), self.get_half_filled_image()) self.assertEqual(diff.get_nrmsd(), math.sqrt(0.5))
def test_nrmsd_one_channel(self): diff = ImageDiff(self.get_image((255, 0, 0)), self.get_black_image()) self.assertEqual(diff.get_nrmsd(), math.sqrt(1.0 / 3))
def test_nrmsd_all_channels(self): diff = ImageDiff(self.get_white_image(), self.get_black_image()) self.assertEqual(diff.get_nrmsd(), 1)