code: def intrinsics_from_matrix(int_mat):
      return (
          int_mat[0, 0],
          int_mat[1, 1],
          int_mat[0, 2],
          int_mat[1, 2],
      )
  
imports: import os
  import numpy
  from skimage import measure
  import tensorflow.compat.v1
  from tensorflow_graphics.projects.local_implicit_grid.core import evaluator
  from tensorflow_graphics.projects.local_implicit_grid.core import local_implicit_grid_layer
  from tensorflow_graphics.projects.local_implicit_grid.core import point_utils
label_desc: Use image node_id 4 for calling a global function with example usage: intrinsics_from_matrix(int_mat) and returns: int_mat,  int_mat,  int_mat,  int_mat