def test_roberts_diagonal2(): """Roberts' filter on a diagonal edge should be a diagonal line.""" image = np.rot90(np.tri(10, 10, 0), 3) expected = ~np.rot90(np.tri(10, 10, -1).astype(bool) | np.tri(10, 10, -2).astype(bool).transpose()) expected = _mask_filter_result(expected, None) result = F.roberts(image).astype(bool) assert_close(result, expected)
def test_roberts_diagonal1(): """Roberts' on an edge should be a one diagonal""" image = np.tri(10, 10, 0) expected = ~(np.tri(10, 10, -1).astype(bool) | \ np.tri(10, 10, -2).astype(bool).transpose()) expected = _mask_filter_result(expected,None) result = F.roberts(image).astype(bool) assert_close(result,expected)
def test_roberts_diagonal2(): """Roberts' on an edge should be a other diagonal""" diagonal = np.tri(10, 10, 0,dtype=int) rev_diagonal = np.rot90(diagonal.transpose(),1) image = (rev_diagonal > 0).astype(float) expected = ~np.rot90((np.tri(10, 10, -1).astype(bool) | \ np.tri(10, 10, -2).astype(bool).transpose()),1) expected = _mask_filter_result(expected,None) result = F.roberts(image).astype(bool) assert_close(result,expected)