code: def copyMakeBorder(src, top, bot, left, right, border_type=cv2.BORDER_CONSTANT, value=0):
      
      hdl = NDArrayHandle()
      check_call(_LIB.MXCVcopyMakeBorder(src.handle, ctypes.c_int(top), ctypes.c_int(bot),
                                         ctypes.c_int(left), ctypes.c_int(right),
                                         ctypes.c_int(border_type), ctypes.c_double(value),
                                         ctypes.byref(hdl)))
      return mx.nd.NDArray(hdl)
docs: Pad image border
      Wrapper for cv2.copyMakeBorder that uses mx.nd.NDArray
  
      Parameters
      ----------
      src : NDArray
          Image in (width, height, channels).
          Others are the same with cv2.copyMakeBorder
  
      Returns
      -------
      img : NDArray
          padded image