--- description: Explore Ultralytics data converter functions like coco91_to_coco80_class, merge_multi_segment, rle2polygon for efficient data handling. keywords: Ultralytics, Data Converter, coco91_to_coco80_class, merge_multi_segment, rle2polygon --- # Reference for `ultralytics/data/converter.py` !!! note Full source code for this file is available at [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/data/converter.py](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/data/converter.py). Help us fix any issues you see by submitting a [Pull Request](https://docs.ultralytics.com/help/contributing/) 🛠️. Thank you 🙏! --- ## ::: ultralytics.data.converter.coco91_to_coco80_class <br><br> --- ## ::: ultralytics.data.converter.coco80_to_coco91_class <br><br> --- ## ::: ultralytics.data.converter.convert_coco <br><br> --- ## ::: ultralytics.data.converter.convert_dota_to_yolo_obb <br><br> --- ## ::: ultralytics.data.converter.min_index <br><br> --- ## ::: ultralytics.data.converter.merge_multi_segment <br><br>