code: def _get_mc_luts():
      """Kind of lazy obtaining of the luts."""
      if not hasattr(mcluts, "THE_LUTS"):
          mcluts.THE_LUTS = _marching_cubes_lewiner_cy.LutProvider(
              EDGETORELATIVEPOSX,
              EDGETORELATIVEPOSY,
              EDGETORELATIVEPOSZ,
              _to_array(mcluts.CASESCLASSIC),
              _to_array(mcluts.CASES),
              _to_array(mcluts.TILING1),
              _to_array(mcluts.TILING2),
              _to_array(mcluts.TILING3_1),
              _to_array(mcluts.TILING3_2),
              _to_array(mcluts.TILING4_1),
              _to_array(mcluts.TILING4_2),
              _to_array(mcluts.TILING5),
              _to_array(mcluts.TILING6_1_1),
              _to_array(mcluts.TILING6_1_2),
              _to_array(mcluts.TILING6_2),
              _to_array(mcluts.TILING7_1),
              _to_array(mcluts.TILING7_2),
              _to_array(mcluts.TILING7_3),
              _to_array(mcluts.TILING7_4_1),
              _to_array(mcluts.TILING7_4_2),
              _to_array(mcluts.TILING8),
              _to_array(mcluts.TILING9),
              _to_array(mcluts.TILING10_1_1),
              _to_array(mcluts.TILING10_1_1_),
              _to_array(mcluts.TILING10_1_2),
              _to_array(mcluts.TILING10_2),
              _to_array(mcluts.TILING10_2_),
              _to_array(mcluts.TILING11),
              _to_array(mcluts.TILING12_1_1),
              _to_array(mcluts.TILING12_1_1_),
              _to_array(mcluts.TILING12_1_2),
              _to_array(mcluts.TILING12_2),
              _to_array(mcluts.TILING12_2_),
              _to_array(mcluts.TILING13_1),
              _to_array(mcluts.TILING13_1_),
              _to_array(mcluts.TILING13_2),
              _to_array(mcluts.TILING13_2_),
              _to_array(mcluts.TILING13_3),
              _to_array(mcluts.TILING13_3_),
              _to_array(mcluts.TILING13_4),
              _to_array(mcluts.TILING13_5_1),
              _to_array(mcluts.TILING13_5_2),
              _to_array(mcluts.TILING14),
              _to_array(mcluts.TEST3),
              _to_array(mcluts.TEST4),
              _to_array(mcluts.TEST6),
              _to_array(mcluts.TEST7),
              _to_array(mcluts.TEST10),
              _to_array(mcluts.TEST12),
              _to_array(mcluts.TEST13),
              _to_array(mcluts.SUBCONFIG13),
          )
  
      return mcluts.THE_LUTS
  
file_path: scikit-image/skimage/measure/_marching_cubes_lewiner.py
imports: import base64
  import numpy
  from .None import _marching_cubes_lewiner_luts
  from .None import _marching_cubes_lewiner_cy
label_desc: Use image node_id 4 for calling a global function with example usage: _get_mc_luts() and returns: mcluts