content: from trackers.log import get_logger
  
  logger = get_logger(__name__)
  
  
  def validate_tracker_id_to_images(
      tracker_id_to_images: dict[str, list[str]],
  ) -> dict[str, list[str]]:
      """Validates a dictionary that maps tracker IDs to lists of image paths for the
      `TripletsDataset` for training ReID models using triplet loss.
  
      Args:
          tracker_id_to_images (dict[str, list[str]]): The tracker ID to images
              dictionary.
  
      Returns:
          dict[str, list[str]]: The validated tracker ID to images dictionary.
      """
      valid_tracker_ids = {}
      for tracker_id, image_paths in tracker_id_to_images.items():
          if len(image_paths) < 2:
              logger.warning(
                  f"Tracker ID '{tracker_id}' has less than 2 images. "
                  f"Skipping this tracker ID."
              )
          else:
              valid_tracker_ids[tracker_id] = image_paths
  
      if len(valid_tracker_ids) < 2:
          raise ValueError(
              "Tracker ID to images dictionary must contain at least 2 items "
              "to select negative samples."
          )
  
      return valid_tracker_ids
  