def test_connect_regions_with_grid():
    try:
        face = sp.face(gray=True)
    except __HOLE__:
        # Newer versions of scipy have face in misc
        from scipy import misc
        face = misc.face(gray=True)
    mask = face > 50
    graph = grid_to_graph(*face.shape, mask=mask)
    assert_equal(ndimage.label(mask)[1], connected_components(graph)[0])

    mask = face > 150
    graph = grid_to_graph(*face.shape, mask=mask, dtype=None)
    assert_equal(ndimage.label(mask)[1], connected_components(graph)[0])
dataset/ETHPy150Open scikit-learn/scikit-learn/sklearn/feature_extraction/tests/test_image.py/test_connect_regions_with_grid