Feature request: Temporarly disabling OpenCV intelligent scissors to create a boundary manually [Shortcut?]

[michaelyyq]

1. When using opencv polygon annotation mode, blur boundary is noisy. If it can be turned to normal polygon mode with hot key, it will be great.
2. When editing the polygon annotation, how can we add point.

[bsekachev]

Hi @michaelyyq

1. When using opencv polygon annotation mode, blur boundary is noisy. If it can be turned to normal polygon mode with hot key, it will be great.

Could you please provide an example for better understanding?

2. When editing the polygon annotation, how can we add point.

Holding "Shift" press on a point. Release "Shift". Then you can redraw a part of the boundary (you also can add a point in the middle). Then press a neighbor point.

[michaelyyq]

Hi @michaelyyq

1. When using opencv polygon annotation mode, blur boundary is noisy. If it can be turned to normal polygon mode with hot key, it will be great.

Could you please provide an example for better understanding?

1. When editing the polygon annotation, how can we add point.

Holding "Shift" press on a point. Release "Shift". Then you can redraw a part of the boundary (you also can add a point in the middle). Then press a neighbor point.

[michaelyyq]

1. Example: When using Opencv mode, it will detect the boundary and create polygon points automatically. But often the boundary is blurry so that the created points deviate too far which I have to change or move carefully with a tiny step. The moment what I want is that I can draw a line manually.

[michaelyyq]

If there is a hot key to switch automatically boundary creating and manually drawing, it will be better.

[michaelyyq]

Do I express clearly? Need a gif animation?

[michaelyyq]

• cvat#3383
  Please see the picture， point C is not what I want, I want point A to move straight to point B as a line segment.

[michaelyyq]

Because of the indistinct boundary between point A and point B, Opencv line detection is deviating to point C. I want to draw a line A to B in polygon draw mode when it is needed or I will listen to the Opencv recommended points. So it needs a function to switch between the two modes by a hotkey freely.

[michaelyyq]

@bsekachev Hi, Will you be free to answer my question？Look forward to your answer.

[bsekachev]

@michaelyyq

As far as I understand, you want to temporarily disable the OpenCV algorithm to draw a part of the border manually, then enable it again. It might be implemented for example by holding a key (when it is held, OpenCV does not suggest automatic borders). But this feature is not implemented yet.

[michaelyyq]

@bsekachev Thanks for your great answer. You just get what I mean. Will you mind planning to implement this feature recently? For tedious annotation jobs, it will significantly improve convenience with this feature.

[bsekachev]

@michaelyyq

We do not have direct plans to implement it, but now we are working on improvements in serverless functions and OpenCV integration. Probably we could implement it on our side together with other features, but I can promise anything. Since CVAT is an open-source tool, it would be awesome if somebody from the community could provide us the feature.

[bsekachev]

Related #2800

[bsekachev]

Implemented, see the PR above