mirror of
https://github.com/wassname/scikit-image.git
synced 2026-07-03 22:06:56 +08:00
Nicolas Poilvert
142 lines
3.3 KiB
Python
142 lines
3.3 KiB
Python
import numpy as np
|
|
from nose.tools import raises
|
|
from numpy.testing import assert_equal
|
|
from skimage.util.array_views import block_view, rolling_view
|
|
|
|
|
|
@raises(TypeError)
|
|
def test_block_view_block_not_a_tuple():
|
|
|
|
A = np.arange(10)
|
|
block_view(A, [5])
|
|
|
|
|
|
@raises(ValueError)
|
|
def test_block_view_negative_shape():
|
|
|
|
A = np.arange(10)
|
|
block_view(A, (-2,))
|
|
|
|
|
|
@raises(ValueError)
|
|
def test_block_view_block_too_large():
|
|
|
|
A = np.arange(10)
|
|
block_view(A, (11,))
|
|
|
|
|
|
@raises(ValueError)
|
|
def test_block_view_wrong_block_dimension():
|
|
|
|
A = np.arange(10)
|
|
block_view(A, (2,2))
|
|
|
|
|
|
@raises(ValueError)
|
|
def test_block_view_1D_array_wrong_block_shape():
|
|
|
|
A = np.arange(10)
|
|
block_view(A, (3,))
|
|
|
|
|
|
def test_block_view_1D_array():
|
|
|
|
A = np.arange(10)
|
|
B = block_view(A, (5,))
|
|
assert_equal(B, np.array([[0, 1, 2, 3, 4],
|
|
[5, 6, 7, 8, 9]]))
|
|
|
|
|
|
def test_block_view_2D_array():
|
|
|
|
A = np.arange(4*4).reshape(4,4)
|
|
B = block_view(A, (2,2))
|
|
assert_equal(B[0,1], np.array([[2, 3],
|
|
[6, 7]]))
|
|
assert_equal(B[1, 0, 1, 1], 13)
|
|
|
|
|
|
def test_block_view_3D_array():
|
|
|
|
A = np.arange(4*4*6).reshape(4,4,6)
|
|
B = block_view(A, (1,2,2))
|
|
assert_equal(B.shape, (4, 2, 3, 1, 2, 2))
|
|
assert_equal(B[2:, 0, 2], np.array([[[[52, 53],
|
|
[58, 59]]],
|
|
[[[76, 77],
|
|
[82, 83]]]]))
|
|
|
|
|
|
@raises(TypeError)
|
|
def test_rolling_view_input_not_array():
|
|
|
|
A = [1, 2, 3, 4, 5]
|
|
rolling_view(A, (2,))
|
|
|
|
|
|
@raises(TypeError)
|
|
def test_rolling_view_window_not_tuple():
|
|
|
|
A = np.arange(10)
|
|
rolling_view(A, [2])
|
|
|
|
|
|
@raises(ValueError)
|
|
def test_rolling_view_wrong_window_dimension():
|
|
|
|
A = np.arange(10)
|
|
rolling_view(A, (2,2))
|
|
|
|
|
|
@raises(ValueError)
|
|
def test_rolling_view_negative_window_length():
|
|
|
|
A = np.arange(10)
|
|
rolling_view(A, (-1,))
|
|
|
|
|
|
@raises(ValueError)
|
|
def test_rolling_view_window_too_large():
|
|
|
|
A = np.arange(10)
|
|
rolling_view(A, (11,))
|
|
|
|
|
|
def test_rolling_view_1D():
|
|
|
|
A = np.arange(10)
|
|
window_shape = (3,)
|
|
B = rolling_view(A, window_shape)
|
|
assert_equal(B, np.array([[0, 1, 2],
|
|
[1, 2, 3],
|
|
[2, 3, 4],
|
|
[3, 4, 5],
|
|
[4, 5, 6],
|
|
[5, 6, 7],
|
|
[6, 7, 8],
|
|
[7, 8, 9]]))
|
|
|
|
|
|
def test_rolling_view_2D():
|
|
|
|
A = np.arange(5*4).reshape(5, 4)
|
|
window_shape = (4, 3)
|
|
B = rolling_view(A, window_shape)
|
|
assert_equal(B.shape, (2, 2, 4, 3))
|
|
assert_equal(B, np.array([[[[ 0, 1, 2],
|
|
[ 4, 5, 6],
|
|
[ 8, 9, 10],
|
|
[12, 13, 14]],
|
|
[[ 1, 2, 3],
|
|
[ 5, 6, 7],
|
|
[ 9, 10, 11],
|
|
[13, 14, 15]]],
|
|
[[[ 4, 5, 6],
|
|
[ 8, 9, 10],
|
|
[12, 13, 14],
|
|
[16, 17, 18]],
|
|
[[ 5, 6, 7],
|
|
[ 9, 10, 11],
|
|
[13, 14, 15],
|
|
[17, 18, 19]]]]))
|