code: def get_axis_aligned_bbox(region):
      """
      convert region to (center_x, center_y, bbox_w, bbox_h)
      that represent by axis aligned box
  
      Parameters
      ----------
          region: np.array (4*N)
          bbox region location
  
      Return:
          Center location weight and height
      """
      region_x = region[0]
      region_y = region[1]
      bbox_w = region[2]
      bbox_h = region[3]
      center_x = region_x + bbox_w / 2
      center_y = region_y + bbox_h / 2
      return center_x, center_y, bbox_w, bbox_h
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  import math
  from collections import namedtuple
  import numpy
  import mxnet
  from mxnet import nd
  from gluoncv.utils.filesystem import try_import_cv2
label_desc: Use image node_id 1 for calling a global function with example usage: get_axis_aligned_bbox(region) and returns: center_x,  center_y,  bbox_w,  bbox_h