Python remove_small_holes Examples

Example #1

File: test_misc.py Project: mritools/cupyimg

def test_uint_image_holes():
    labeled_holes_image = np.array(
        [
            [0, 0, 0, 0, 0, 0, 1, 0, 0, 0],
            [0, 1, 1, 1, 1, 1, 0, 0, 0, 0],
            [0, 1, 0, 0, 1, 1, 0, 0, 0, 0],
            [0, 1, 1, 1, 0, 1, 0, 0, 0, 0],
            [0, 1, 1, 1, 1, 1, 0, 0, 0, 0],
            [0, 0, 0, 0, 0, 0, 0, 2, 2, 2],
            [0, 0, 0, 0, 0, 0, 0, 2, 0, 2],
            [0, 0, 0, 0, 0, 0, 0, 2, 2, 2],
        ],
        dtype=np.uint8,
    )
    expected = np.array(
        [
            [0, 0, 0, 0, 0, 0, 1, 0, 0, 0],
            [0, 1, 1, 1, 1, 1, 0, 0, 0, 0],
            [0, 1, 1, 1, 1, 1, 0, 0, 0, 0],
            [0, 1, 1, 1, 1, 1, 0, 0, 0, 0],
            [0, 1, 1, 1, 1, 1, 0, 0, 0, 0],
            [0, 0, 0, 0, 0, 0, 0, 1, 1, 1],
            [0, 0, 0, 0, 0, 0, 0, 1, 1, 1],
            [0, 0, 0, 0, 0, 0, 0, 1, 1, 1],
        ],
        dtype=np.bool_,
    )
    with expected_warnings(["returned as a boolean array"]):
        observed = remove_small_holes(labeled_holes_image, area_threshold=3)
    assert_array_equal(observed, expected)

Example #2

File: test_misc.py Project: mritools/cupyimg

def test_label_warning_holes():
    labeled_holes_image = np.array(
        [
            [0, 0, 0, 0, 0, 0, 1, 0, 0, 0],
            [0, 1, 1, 1, 1, 1, 0, 0, 0, 0],
            [0, 1, 0, 0, 1, 1, 0, 0, 0, 0],
            [0, 1, 1, 1, 0, 1, 0, 0, 0, 0],
            [0, 1, 1, 1, 1, 1, 0, 0, 0, 0],
            [0, 0, 0, 0, 0, 0, 0, 2, 2, 2],
            [0, 0, 0, 0, 0, 0, 0, 2, 0, 2],
            [0, 0, 0, 0, 0, 0, 0, 2, 2, 2],
        ],
        dtype=np.int_,
    )
    with expected_warnings(["use a boolean array?"]):
        remove_small_holes(labeled_holes_image, area_threshold=3)
    remove_small_holes(labeled_holes_image.astype(bool), area_threshold=3)

Example #3

File: test_misc.py Project: mritools/cupyimg

def test_one_connectivity_holes():
    expected = np.array(
        [
            [0, 0, 0, 0, 0, 0, 1, 0, 0, 0],
            [0, 1, 1, 1, 1, 1, 0, 0, 0, 0],
            [0, 1, 1, 1, 1, 1, 0, 0, 0, 0],
            [0, 1, 1, 1, 1, 1, 0, 0, 0, 0],
            [0, 1, 1, 1, 1, 1, 0, 0, 0, 0],
            [0, 0, 0, 0, 0, 0, 0, 1, 1, 1],
            [0, 0, 0, 0, 0, 0, 0, 1, 1, 1],
            [0, 0, 0, 0, 0, 0, 0, 1, 1, 1],
        ],
        np.bool_,
    )
    observed = remove_small_holes(test_holes_image, area_threshold=3)
    assert_array_equal(observed, expected)

Example #4

File: test_misc.py Project: mritools/cupyimg

def test_float_input_holes():
    float_test = np.random.rand(5, 5)
    with testing.raises(TypeError):
        remove_small_holes(float_test)

Example #5

File: test_misc.py Project: mritools/cupyimg

def test_in_place_holes():
    image = test_holes_image.copy()
    observed = remove_small_holes(image, area_threshold=3, in_place=True)
    assert_equal(observed is image, True,
                 "remove_small_holes in_place argument failed.")