class_docstr: Lighting noise(AlexNet - style PCA - based noise)
code: def __init__(self, alphastd, eigval, eigvec):
      self.alphastd = alphastd
      self.eigval = torch.Tensor(eigval)
      self.eigvec = torch.Tensor(eigvec)
  
imports: import random
  import numpy
  import PIL
  import PIL.ImageDraw
  import PIL.ImageEnhance
  import PIL.ImageOps
  import torch
  from PIL import Image
label_desc: Use image node_id 1 to create a new Lighting object from inherited base classes: object with example: obj = Lighting(alphastd, eigval, eigvec)