---
license: cc-by-4.0
pretty_name: COCO 2017 LibreYOLO Assets
task_categories:
- object-detection
tags:
- coco
- yolo
- libreyolo
---

# COCO 2017 LibreYOLO Assets

This dataset repository hosts small COCO 2017 helper assets used by LibreYOLO dataset YAML files.

Files:

- `instances_val2017.json`: official COCO 2017 validation instance annotations.
- `coco2017labels-libreyolo.zip`: YOLO-format train/val label files generated by LibreYOLO from the official COCO 2017 instance annotations.

No COCO images are included here. LibreYOLO downloads COCO images from the official COCO image hosts.

## License and Attribution

The COCO annotations are licensed by the COCO Consortium under Creative Commons Attribution 4.0. The converted YOLO labels are derived from the official COCO 2017 train/val instance annotations and are provided under the same annotation license.

Attribution: COCO Consortium / Microsoft COCO dataset.

## Conversion Notes

The YOLO label zip was generated locally by LibreYOLO from `instances_train2017.json` and `instances_val2017.json`.

- COCO categories are ordered by official `category_id`, matching LibreYOLO's COCO YAML class order.
- Bounding boxes are converted from COCO `xywh` pixels to normalized YOLO `class x_center y_center width height` rows.
- `iscrowd` annotations are omitted.
- Invalid or empty boxes are omitted.
- One `.txt` label file is written for every train/val image, including empty files for images without valid objects.

## Checksums

```text
instances_val2017.json
SHA256: E8C7F7908F1D7278341FAE127D0DA654F102F11BD7B21D8AEEFA635B8C810B6F

coco2017labels-libreyolo.zip
SHA256: BDDA16FD74809745D9FC303335DAD63E6D1FE85CA53B2C32A49C252587252CBB
```