class_docstr: Merge and save evaluation results.
code: def __init__(self):
      self._area_int = []
      self._area_sum = []
      self._instance_i = 0
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import functools
  import os
  import mesh_tensorflow
  import numpy
  from six.moves import range
  import tensorflow.compat.v1
  from mesh_tensorflow.experimental import data_aug_lib
  from tensorflow.python.platform import flags
label_desc: Use image node_id 1 to create a new PostProcessor object from inherited base classes: object with example: obj = PostProcessor()