code: def main():
      args = parse_args()
      convert_crowdhuman(args.input, args.output, mode="train")
      convert_crowdhuman(args.input, args.output, mode="val")
  
file_path: mmdetection/tools/dataset_converters/crowdhuman2coco.py
imports: import argparse
  import json
  import os
  import os.path
  from collections import defaultdict
  import mmengine
  from PIL import Image
  from tqdm import tqdm
label_desc: Use image node_id 4 for calling a global function with example usage: main() without return types