docstr: :param scales: 尺度
  :param ramdon_rate: 随机系数
  :return:
docstr_tok: [":","param","scales",":","\u5c3a\u5ea6",":","param","ramdon_rate",":","\u968f\u673a\u7cfb\u6570",":","return",":"]
code: def __init__(self, scales, random_rate):
      """
      :param scales: 尺度
      :param ramdon_rate: 随机系数
      :return:
      """
      self.random_rate = random_rate
      self.scales = scales
  
imports: import math
  import numbers
  import random
  import cv2
  import numpy
  from skimage.util import random_noise
label_desc: Use image node_id 1 to create a new RandomScale object  with example: obj = RandomScale(scales, random_rate)