Streaming vertices when creating polygon segments

Feedback
1

Hello,

Following up on a post that I made nearly one year ago.

It would be incredibly helpful to be able to stream vertices when creating polygon annotations. In other words, being able to click to start streaming, move the cursor around the object, and then click to stop streaming to create polygons would expedite the annotation process immensely. And, before you suggest to use the smart polygon tool, it doesn’t work in low contrast images when the objects are small.

I’ve been manually clicking, vertex-by-vertex, many hundreds of small polygons per image, and it’s incredibly time consuming. Other annotation and geospatial editing platforms provide the ability to stream vertices. This is a major pitfall of Roboflow, and I don’t see myself continuing to use Roboflow once this project is completed unless this functionality is incorporated.

Thanks.

2

Hey @ZackLoken - thanks for the feedback.

Do you mind sharing an example image so we can take a look?

3

Absolutely! Thanks for the quick response.

Here’s a screenshot of the annotated image:

image
image1614×1201 242 KB

Smart polygon tool does a decent job at segmenting the tree canopy (when there aren’t other trees around), but does not pick out the chestnut burs (red polygons) from the tree canopy.

I’ve also included the original image below:

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441588×1518 455 KB

Thanks,

-Zack

1 Like
4

This doesn’t solve your immediate issue of labeling the first ~30 images, but have you tried using SAHI + a trained model to bulk label the rest of the images?

We have built-in SAHI logic in workflows.

5

I’m going to flag this request to the engineering team, though in 2.5 years at Roboflow this is the first time I’ve seen anyone request vertex streaming. It’s unlikely to get prioritized unless we hear of others facing the same challenge, unfortunately.

1 Like
6

Thanks @Jacob_Witt for bringing this to my attention. I’ve been contemplating the best way to semi-automate the annotation process for the remaining trees now that we’ve got over 10,000 chestnut bur annotations across ~40 trees/images. SAHI seems to be exactly what I’ve been looking for, and great to see that it’s able to be easily incorporated into our Roboflow workflow.

I’ll experiment with SAHI plus a trained model to bulk label the remaining images next week. If all goes as planned, my technicians will be very relieved moving forward :slight_smile:

Thanks again!

-Zack

7

My gut is you’ll get a pretty good working model that will save you a bunch of time. Give it a shot and let me know how it goes; Workflows is relatively new so I’m happy to jump on a call if needed.