code: def transform_centers_of_mass(
      static, static_grid2world, moving, moving_grid2world
  ):
      r"""Transformation to align the center of mass of the input images.
  
      Parameters
      ----------
      static : array, shape (S, R, C)
          static image
      static_grid2world : array, shape (dim+1, dim+1)
          the voxel-to-space transformation of the static image
      moving : array, shape (S, R, C)
          moving image
      moving_grid2world : array, shape (dim+1, dim+1)
          the voxel-to-space transformation of the moving image
  
      Returns
      -------
      affine_map : instance of AffineMap
          the affine transformation (translation only, in this case) aligning
          the center of mass of the moving image towards the one of the static
          image
  
      """
      dim = len(static.shape)
      if static_grid2world is None:
          static_grid2world = np.eye(dim + 1)
      if moving_grid2world is None:
          moving_grid2world = np.eye(dim + 1)
      c_static = ndimage.center_of_mass(np.array(static))
      c_static = static_grid2world.dot(c_static + (1,))
      c_moving = ndimage.center_of_mass(np.array(moving))
      c_moving = moving_grid2world.dot(c_moving + (1,))
      transform = np.eye(dim + 1)
      transform[:dim, dim] = (c_moving - c_static)[:dim]
      affine_map = AffineMap(
          transform,
          static.shape,
          static_grid2world,
          moving.shape,
          moving_grid2world,
      )
      return affine_map
  
imports: from warnings import warn
  import numpy
  import numpy.linalg
  import scipy.ndimage
  from dipy.core.optimize import Optimizer
  from dipy.core.interpolation import interpolate_scalar_2d, interpolate_scalar_3d
  from dipy.align import vector_fields
  from dipy.align import VerbosityLevels
  from dipy.align.parzenhist import ParzenJointHistogram, sample_domain_regular, compute_parzen_mi
  from dipy.align.imwarp import get_direction_and_spacings, ScaleSpace
  from dipy.align.scalespace import IsotropicScaleSpace
  from dipy.utils.deprecator import deprecated_params
label_desc: Use image node_id 1 for calling a global function with example usage: transform_centers_of_mass(static, static_grid2world, moving, moving_grid2world) and returns: affine_map