code: def get_camera_features(seq_length):
      return {
          "focal_length": tf.float32,
          "sensor_width": tf.float32,
          "field_of_view": tf.float32,
          "positions": tfds.features.Tensor(
              shape=(seq_length, 3), dtype=tf.float32
          ),
          "quaternions": tfds.features.Tensor(
              shape=(seq_length, 4), dtype=tf.float32
          ),
      }
  
imports: import dataclasses
  import json
  import logging
  import imageio
  import numpy
  import png
  import tensorflow
  import tensorflow_datasets.public_api
  from typing import List, Dict, Union
label_desc: Use image node_id 2 for calling a global function with example usage: get_camera_features(seq_length) and returns: dict