code: def main():
      image = data.astronaut()
  
      cv2.namedWindow("aug", cv2.WINDOW_NORMAL)
      cv2.imshow("aug", image)
      cv2.waitKey(TIME_PER_STEP)
  
      # for value in cycle(np.arange(-255, 255, VAL_PER_STEP)):
      for value in np.arange(-255, 255, VAL_PER_STEP):
          aug = iaa.AddToHueAndSaturation(value=value)
          img_aug = aug.augment_image(image)
          img_aug = iaa.pad(img_aug, bottom=40)
          img_aug = ia.draw_text(
              img_aug,
              x=0,
              y=img_aug.shape[0] - 38,
              text="value=%d" % (value,),
              size=30,
          )
  
          cv2.imshow("aug", img_aug)
          cv2.waitKey(TIME_PER_STEP)
  
      images_aug = iaa.AddToHueAndSaturation(
          value=(-255, 255), per_channel=True
      ).augment_images([image] * 64)
      ia.imshow(ia.draw_grid(images_aug))
  
      image = ia.quokka_square((128, 128))
      images_aug = []
      images_aug.extend(iaa.AddToHue().augment_images([image] * 10))
      images_aug.extend(
          iaa.AddToSaturation().augment_images([image] * 10)
      )
      ia.imshow(ia.draw_grid(images_aug, rows=2))
  
imports: from __future__ import print_function, division
  import numpy
  from skimage import data
  import cv2
  import imgaug
  from imgaug import augmenters
label_desc: Use image node_id 1 for calling a global function with example usage: main() without return types