code: def overlay_onto_screenshot_intensity(
      template_filepath: str,
      template_bboxes_filepath: str,
      metadata: Dict[str, Any],
      **kwargs,
  ) -> float:
      _, bbox = imutils.get_template_and_bbox(
          template_filepath, template_bboxes_filepath
      )
      bbox_area = (bbox[2] - bbox[0]) * (bbox[3] - bbox[1])
      dst_area = metadata["dst_width"] * metadata["dst_height"]
      return ((dst_area - bbox_area) / dst_area) * 100.0
  
imports: from typing import Any, Dict, List, Optional, Tuple
  import numpy
  from augly.image import intensity, utils
  from augly.video.helpers import get_video_info
label_desc: Use image node_id 27 for calling a global function with example usage: overlay_onto_screenshot_intensity(template_filepath, template_bboxes_filepath, metadata) and returns: unknown