code: def corner_to_center(xmin, ymin, xmax, ymax):
      w = xmax - xmin
      h = ymax - ymin
  
      cx = xmin + w / 2
      cy = ymin + h / 2
  
      return cx, cy, h, w
  
file_path: chitra/chitra/coordinates.py
imports: from typing import TYPE_CHECKING, List, Optional, Tuple, Union
  import numpy
  from imgaug.augmentables import bbs
label_desc: Use image node_id 5 for calling the BoundingBoxes obj's underlying member method code with example usage: obj.corner_to_center(xmin, ymin, xmax, ymax) and returns: cx,  cy,  h,  w