code: def overlap(self, rect2):
      w = np.max(
          [
              np.min([self.right(), rect2.right()])
              - np.max([self.left(), rect2.left()])
          ],
          0,
      )
      h = np.max(
          [
              np.min([self.bottom(), rect2.bottom()])
              - np.max([self.top(), rect2.top()])
          ],
          0,
      )
      return w * h
  
imports: import csv
  import multiprocessing
  import os
  import re
  import nnabla.logger
  import numpy
  import tqdm
  from nnabla.utils.image_utils import imsave, imread, imresize
label_desc: Use image node_id 13 for calling the ObjectRect obj's underlying member method code with example usage: obj.overlap(rect2) and returns: unknown