class_docstr: Caltech Birds 2010 dataset.
docstr: Function to get normalized bounding box values.
  
  Args:
    bbox_annotations: list of bbox values in kitti format
    img_width: image width
    img_height: image height
  
  Returns:
    Normalized bounding box xmin, ymin, xmax, ymax values
docstr_tok: ["Function","to","get","normalized","bounding","box","values",".","Args",":","bbox_annotations",":","list","of","bbox","values","in","kitti","format","img_width",":","image","width","img_height",":","image","height","Returns",":","Normalized","bounding","box","xmin",",","ymin",",","xmax",",","ymax","values"]
code: def _get_bounding_box_values(
      self, bbox_annotations, img_width, img_height
  ):
      """Function to get normalized bounding box values.
  
      Args:
        bbox_annotations: list of bbox values in kitti format
        img_width: image width
        img_height: image height
  
      Returns:
        Normalized bounding box xmin, ymin, xmax, ymax values
      """
  
      ymin = bbox_annotations["top"] / img_height
      xmin = bbox_annotations["left"] / img_width
      ymax = bbox_annotations["bottom"] / img_height
      xmax = bbox_annotations["right"] / img_width
  
      return ymin, xmin, ymax, xmax
  
imports: import collections
  import concurrent.futures
  import os
  import re
  from etils import epath
  import numpy
  from tensorflow_datasets.core.utils.lazy_imports_utils import tensorflow
  import tensorflow_datasets.public_api
label_desc: Use image node_id 4 for calling the CaltechBirds2010 obj's underlying member method code with example usage: obj._get_bounding_box_values(bbox_annotations, img_width, img_height) and returns: ymin,  xmin,  ymax,  xmax