code: def convert_img(img):
      """Converts (H, W, C) numpy.ndarray to (C, W, H) format"""
      if len(img.shape) == 3:
          img = img.transpose(2, 0, 1)
      if len(img.shape) == 2:
          img = np.expand_dims(img, 0)
      return img
  
label_desc: Use image node_id 1 for calling a global function with example usage: convert_img(img) and returns: img