def METHOD_NAME():
    f = 255*np.random.random((128,128))
    f = f.astype(np.uint8)
    h = mh.features.haralick(f, use_x_minus_y_variance=False)
    h2 = mh.features.haralick(f, use_x_minus_y_variance=True)
    assert np.sum(h != h2) == 4