class_docstr: Visualization the segmentation result.
  Args:
      weight(float): weight of original image in combining image, default is 0.6.
code: def __init__(self, weight: float = 0.6):
      self.weight = weight
      self.get_color_map_list = ColorMap(256)
  
imports: import os
  import random
  from typing import Callable, Union, List, Tuple
  import cv2
  import numpy
  from PIL import Image
  import paddlehub.vision.functional
label_desc: Use image node_id 1 to create a new SegmentVisual object  with example: obj = SegmentVisual(weight)