# What changed in faster-coco-eval

> 29 changes in faster-coco-eval 1 from its official release notes, upgrade guides and advisories: 1 security, 1 new APIs and options. Each one cited. Sources checked 2026-10-18. HTML: https://unstale.sh/pypi/faster-coco-eval/

To see which of these apply to a repository, run `npx @unstale/cli init` in it.

## faster-coco-eval 1

### Security

- Hardens native RLE and evaluator inputs. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)

### New APIs and options

- Adds nano and micro evaluation ranges for very small objects. (1.7.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.7.0)

### Performance

- Avoids accumulation copies, with a reported 1.11x boost. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Parallelizes batch RLE operations, with a reported 2.80x boost. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Parallelizes category-area accumulation. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Vectorizes computeOks, with a reported 6.05x boost. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Skips empty IoU pair calculations. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Partitions ignore ordering linearly, with a reported 3.77x boost. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Parallelizes image evaluation, with a reported 2.17x boost. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Releases the GIL during IoU computation, with a reported 2.59x boost. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Optimizes native and annotation dispatch. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Hoists Python list length, with a reported 1.09x boost. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Parallelizes RLE IoU evaluation, with a reported 2.63x boost. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Reuses sorted detections across maxDets. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Addresses memory problems; the notes do not specify the particular change. (1.7.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.7.0)

### Fixes and other changes

- Warns when annotation ID 0 ambiguously matches the sentinel. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Adds guards for decoded RLE slices. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Resolves evaluation regressions. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Hardens extra evaluation helpers. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Adds support for gloo all gather. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Hardens low-level COCO API edge cases. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Preserves matrices during normalization. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Hardens native evaluator boundaries. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Retains orphan annotations in indexes. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Addresses review findings in the Python evaluation API. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Corrects mismatch indexing in rleIou. (1.8.0) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.8.0)
- Fixes precision over-estimation caused by monotone PR-curve interpolation. (1.7.2) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.7.2)
- Raises a clear ValueError when IoU=0.50 is absent from iouThrs. (1.7.2) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.7.2)
- Fixes a type error in faster_eval_api. (1.7.2) — [release notes](https://github.com/MiXaiLL76/faster_coco_eval/releases/tag/1.7.2)