Noisy labels for instance segmentation (COCO-format): VIPER (clean) + VIPER-N + COCO-N

Hi all — sharing a small HF collection of datasets/benchmarks for **instance segmentation under noisy labels** (COCO-format):

Collection:

What’s inside:

- **VIPER (clean)**: images + clean COCO instance annotations (`instances_{train,val}2017.json`)

- **VIPER-N**: noisy COCO instance annotations for VIPER (annotations-only)

- **COCO-N**: noisy COCO instance annotations for COCO (annotations-only)

All annotations are standard COCO instances JSON, so you can evaluate by swapping the `instances_{train,val}2017.json` paths in your pipeline.

Noise generation / applying to other datasets:

Feedback welcome (especially around dataloader integrations / viewer-friendly previews).

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