code: def __init__(self, threshold=0.5):
      super().__init__()
      self.threshold = threshold
  
imports: import io
  from collections import defaultdict
  from typing import List, Optional
  import torch
  import torch.nn
  import torch.nn.functional
  from torch import Tensor
  from PIL import Image
  import util.box_ops
  from util.misc import NestedTensor, interpolate, nested_tensor_from_tensor_list
label_desc: Use image node_id 1 to create a new PostProcessSegm object from inherited base classes: nn with example: obj = PostProcessSegm(threshold)