Motivation

A tool to convert label studio's json annotation results to coco format.

Modification

Add a single python script file.

BC-breaking (Optional)

Use cases (Optional)

python tools/dataset_converters/labelstudio2coco.py config.xml project-1-at-2023-05-13-09-22-91b53efa.json output/result.json

The config.xml is from Labeling Interface in label studio web ui. The content is like that:

<View>
  <KeyPointLabels name="kp-1" toName="img-1">
  	<Label value="person" background="#D4380D"/>
  </KeyPointLabels>
  <PolygonLabels name="polygonlabel" toName="img-1"> 
  	<Label value="person" background="#0DA39E"/>
  </PolygonLabels>
  <RectangleLabels name="label" toName="img-1"> 
  	<Label value="person" background="#DDA0EE"/>
  </RectangleLabels>
  <Image name="img-1" value="$img"/>
</View>

The project-*.json is from Export -> JSON in label studio web ui. The annotation order should be keypoints, rectangle/polygon.

Checklist

Before PR:

• I have read and followed the workflow indicated in the CONTRIBUTING.md to create this PR.
• Pre-commit or linting tools indicated in CONTRIBUTING.md are used to fix the potential lint issues.
• Bug fixes are covered by unit tests, the case that causes the bug should be added in the unit tests.
• New functionalities are covered by complete unit tests. If not, please add more unit tests to ensure correctness.
• The documentation has been modified accordingly, including docstring or example tutorials.

After PR:

• CLA has been signed and all committers have signed the CLA in this PR.