[DOCS] Label Studio does not support Polylines

[daniel-bogdoll]

Instructions

I wanted to label data with PolyLines and chose the Label Studio integration. https://docs.voxel51.com/integrations/labelstudio.html mentions that polylines are supported:

label_type (None): a string indicating the type of labels to annotate. The possible label types are:

...

"polylines": polylines stored in Polylines fields with their filled attributes set to False

...

However, Label Studio only supports Polygons for semantic masks: https://labelstud.io/tags/polygonlabels.html. Thus, generating lines, e.g. with only 2 points, is not possible:

URL(s) with the issue

https://docs.voxel51.com/integrations/labelstudio.html

Description of proposal (what needs changing)

Removal of the support of PolyLines or contribution to Label Studio. I believe CVAT does support polylines though, so pointing to that alternative might also be part of the solution.

Willingness to contribute

• Yes. I can contribute a documentation fix independently
• Yes. I would be willing to contribute a documentation fix with guidance from the FiftyOne community
• No. I cannot contribute a documentation fix at this time