---
description: Convert COCO-91 to COCO-80 class, RLE to polygon, and merge multi-segment images with Ultralytics YOLO data converter. Improve your object detection.
keywords: Ultralytics, YOLO, converter, COCO91, COCO80, rle2polygon, merge_multi_segment, annotations
---
## coco91_to_coco80_class
---
### ::: ultralytics.yolo.data.converter.coco91_to_coco80_class
< br > < br >
## convert_coco
---
### ::: ultralytics.yolo.data.converter.convert_coco
< br > < br >
## rle2polygon
---
### ::: ultralytics.yolo.data.converter.rle2polygon
< br > < br >
## min_index
---
### ::: ultralytics.yolo.data.converter.min_index
< br > < br >
## merge_multi_segment
---
### ::: ultralytics.yolo.data.converter.merge_multi_segment
< br > < br >
## delete_dsstore
---
### ::: ultralytics.yolo.data.converter.delete_dsstore
< br > < br >