I use roboflow and find its smart polygon quite well.so labelme can support function like this.it will be nice

[futureflsl]

Provide environment information

how roboflow develop smert polygon?

What OS are you using?

windows

Describe the Bug

how roboflow develop smert polygon?

Expected Behavior

No response

To Reproduce

No response

[ryouchinsa]

There are 2 steps to realize the smart polygon feature.

Dragging a box, apply an segmentation model and the segmentation mask is obtained. Using cv::findContours(), convert the mask to the polygon. Using cv::approxPolyDP(), reduce the points of the polygon. https://docs.opencv.org/4.x/d3/dc0/group__imgproc__shape.html

For the interactive segmentation, it looks that EISeg can do the same thing. https://github.com/PaddlePaddle/PaddleSeg/blob/release/2.7/EISeg/README_EN.md

[ndgnuh]

I have not used roboflow so I don't know how good it is. I don't think a semantic segmentation model is really desired here since we have a local region and a lot of domains to segment. I think simply thresholding the selected region would do the work.