COCO json with category ID: 0 not loading

[kkmehta03]

My actions before raising this issue

• [x] Read/searched the docs
• [x] Searched past issues

Unable to upload COCO json annotations when category ID starts from 0

Expected Behaviour

Upload all annotations

Current Behaviour

can\t import annotation #0 (bbox) error.

Possible Solution

Steps to Reproduce (for bugs)

Context

The COCO json is exported from fiftyone dataset view as shown here

Your Environment

• Git hash commit (git log -1):
• Docker version docker version (e.g. Docker 17.0.05):
• Are you using Docker Swarm or Kubernetes?
• Operating System and version (e.g. Linux, Windows, MacOS):
• Code example or link to GitHub repo or gist to reproduce problem:
• Other diagnostic information / logs:
  Logs from `cvat` container

Next steps

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[bsekachev]

@kirill-sizov @yasakova-anastasia Could you please comment on the issue?

[yasakova-anastasia]

I was able to reproduce this issue.

[zhiltsov-max]

Hi, the id 0 in COCO format is reserved to mean "no label".

Related https://github.com/openvinotoolkit/datumaro/issues/733

UPD: I think, we could add a special import option in Datumaro to specify the "no label" id, or to add a special handling for id = 0 in CVAT, as it's not possible to import annotations without labels in CVAT.