code: def rgb_to_id(color):
      if isinstance(color, np.ndarray) and len(color.shape) == 3:
          if color.dtype == np.uint8:
              color = color.astype(np.int32)
          return (
              color[:, :, 0]
              + 256 * color[:, :, 1]
              + 256 * 256 * color[:, :, 2]
          )
      return int(color[0] + 256 * color[1] + 256 * 256 * color[2])
  
imports: import pathlib
  import warnings
  from typing import Dict, List, Optional, Set, Tuple, Union
  import numpy
  from PIL import Image
  from ...feature_extraction_utils import BatchFeature, FeatureExtractionMixin
  from ...image_utils import ImageFeatureExtractionMixin, is_torch_tensor
  from ...utils import TensorType, is_torch_available, logging
label_desc: Use image node_id 4 for calling a global function with example usage: rgb_to_id(color) and returns: int, unknown