AI SegmentationDraw an area in QGIS. Get every building inside it as a polygon.
Name what you want to find and the plugin detects every match in the area.
A first draft in minutes, then three steps to turn it into a layer you can hand over.
What it is
AI Segmentation is a QGIS plugin that turns aerial or satellite imagery into vector polygons.
Click one object to trace it, or name what you want and it finds every match inside the area you drew. Each polygon has a confidence score and an area, in your project CRS. Automatic mode sends the imagery to our servers.
- Runs in
- QGIS 3.22 and later
- Starts at
- Free, no card
Why automate
The plugin drew 243 outlines in 22 seconds. By hand, that is over two hours.
The old way
Point by point, one outline at a time. The tenth building takes as long as the first.
Source: Kirillov et al., Segment Anything (Meta AI, 2023). Fully manual annotation averaged 34 s per mask.
The new way
Draw the area once and the plugin finds everything in it. One pass over central Paris gave 635 shapes, and the review kept the 82 real buildings in a few clicks.
How a run works
Three steps from one example to a layer you can hand over.
Segment one example
Detect every match in the area
Review, fix, export
One object at a time
One click, one object, no area to draw.
Semi-Auto segments whatever you click. You pick which model answers, and you can switch at any time. Clicking costs nothing.
My computer
The smaller model, on your own machine. It runs on your CPU, needs no internet, and you can click as many objects as you want.
One download, then nothing leaves your computer
Cloud AI
The bigger model, on our servers. No GPU and nothing to install, so it answers at the same speed on any machine.
Nothing to install. Clicking is free, 1 detection per object you save
Real runs
One pass over parkland returned 925 tree crowns.
Each tile is a real automatic run in QGIS. Every polygon carries its area and a confidence score, so you can filter before you export.
After
BeforeBuilding footprints
Every roof on the block, from your own imagery.
After
BeforeSolar panels
A whole solar farm, block by block.
After
BeforeTrees
925 crowns over parkland, each its own polygon.
After
BeforeRoads & paved surfaces
Road extraction across a dense city district.
After
BeforeSwimming pools
Every backyard pool in a residential block.
After
BeforeField parcels
Farm parcels for land cover mapping.
Free gives you 200 detections a month. Pro gives you 5,000, on areas of any size.
Both plans use the same AI. Pro gives you more runs, and lets each run cover more ground.
Free
For one site at a time.
- Automatic detection across a whole area, every object at once
- The same cloud AI as Pro, not a weaker free version
- Semi-Auto on your own machine: unlimited, offline, open source
- Export to GeoPackage, GeoJSON, Shapefile or KML. Yours to keep
Pro
For a whole city at once.
Cancel anytime. Everything you exported stays yours.
Everything in Free, plus:
- Any area size. Free stops at 15 km².
- Small objects still show up on wide areas. Free loses them.
- Every run is kept with its image. Open it again months later.
Organizations
2+ seats, one invoice for the whole team.
- Quote, purchase order, bank transferaccepted
Prices excl. VAT. Tax is calculated at checkout.
Pack
One plugin turns images into polygons. The other changes what the image shows.
Billed monthly, cancel anytime
AI Edit Pro, 3,000 credits a month
AI Segmentation Pro, 5,000 detections a monthA detection is a run on our servers. In Automatic it is one image tile. With Cloud AI it is one object you save. Semi-Auto on your own computer is free and unlimited. Clicks and fixes cost nothing, and QGIS shows what a run will cost before you start it.
What users are saying
Install in under 10 seconds
Launch QGIS on your computer
Navigate to Plugins → 🧩 Manage and Install Plugins
Search for "AI Segmentation" and click Install. Pick Cloud AI and your first click works right away, with nothing else to download.
Frequently Asked Questions
- AI Segmentation is a QGIS plugin that turns imagery into vector polygons. Point at one object and get its outline, or draw an area and let the AI find every instance inside it.
- Yes. Semi-Auto on your own machine is free, unlimited and open source. Anything that runs on our servers spends detections: 200 free every month, no credit card. One detection is one image tile in Automatic, or one object you save with Cloud AI. Pro raises that to 5,000 a month, lifts the 15 km² limit on the area you can draw, and keeps the fine grid at any width.
- Pro lifts the two limits that stop a free account on real work. Free areas stop at 15 km². Pro has no size limit, so a whole city runs in one go. And a wide area on Free is spread over a coarser grid, so width costs detail. Pro keeps the fine grid at any width. Pro also raises the monthly allowance to 5,000 detections and keeps every run with its imagery, so you can reopen and re-export it months later. €39 a month, cancel anytime.
- Anything visible in your images: buildings, roads, vegetation, vehicles, water bodies, agricultural parcels, and more. It works on satellite imagery, aerial photos, drone images, and any other image layer in QGIS.
- We publish no accuracy figure, because one number would be false: it moves with your imagery, your resolution and what you are extracting. We show you the errors instead. Every automatic run opens in a review step where you filter by confidence and size, add what was missed, delete what is wrong, and square off building corners. On a dense Paris block, 635 raw polygons came down to 82 real buildings. Corrections never cost anything. Test it on your own imagery for free, that is the only honest measure.
- Yes. On Pro there is no size limit. Automatic splits a large area into tiles, detects each one, and stitches everything back into a single polygon layer, merging objects that cross tile edges. On the free plan an area stops at 15 km² per run, and a wider area is spread over a coarser grid unless you raise the Precision, so width costs detail rather than detections.
- Your imagery is processed and stored on our servers in Europe, and nowhere else. We do not train any model on it and we do not share it. If you prefer, Semi-Auto runs on your own machine, and then nothing leaves your computer. You can ask us to delete everything at any time.
- When you are done, click Export or press Enter. All your outlines are saved as a standard GIS file directly in QGIS, ready to edit, style, or export to any format.
- Open QGIS, go to Plugins → Manage and Install Plugins, search for "AI Segmentation" and click Install. Or download directly from the QGIS Plugin Repository.
- QGIS 3.22 or later, on Windows, macOS or Linux. No GPU. The plugin runs on our servers in Europe, so there is nothing to install and every machine works at the same speed. If you prefer, Semi-Auto runs on your own machine instead, on your CPU. It is free and it works, but it is slow on a large image.
- Yes. You can cancel anytime from your dashboard and keep Pro until the end of the period you already paid, with no lock-in. Because Pro gives immediate access to the service, subscription fees are generally non-refundable, but if something went wrong just email us and we'll make it right.