def get_padding_value(dtype):
  """Returns the padding value given a dtype."""
  padding_value = None
  if dtype == np.uint8:
    padding_value = np.uint8(0)
  elif dtype == np.uint16:
    padding_value = np.uint16(0)
  elif dtype == np.float32:
    padding_value = 0.0
  else:
    padding_value = 0
  assert padding_value is not None
  return padding_value
Returns the padding value given a dtype.