code: def test_ip_shape(self, c_slice):
      x = self.img[:, c_slice]
      assert_equal(self.f(x).shape, x.shape)
  
file_path: scikit-image/skimage/filters/tests/test_lpi_filter.py
imports: import numpy
  import pytest
  from numpy.testing import assert_, assert_equal, assert_array_almost_equal
  from skimage._shared.utils import _supported_float_type
  from skimage.data import camera, coins
  from skimage.filters import LPIFilter2D, filter_inverse, filter_forward, wiener, gaussian
label_desc: Use image node_id 3 for calling the TestLPIFilter2D obj's underlying member method code with example usage: obj.test_ip_shape(c_slice) without return types