cvat/site/content/en/docs/manual/advanced/annotation-with-polygons/edit-polygon.md

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2025-09-16 01:19:40 +00:00
---
title: "Edit polygon"
linkTitle: "Edit polygon"
weight: 4
---
To edit a polygon you have to click on it while holding `Shift`, it will open the polygon editor.
- In the editor you can create new points or delete part of a polygon by closing the line on another point.
- When `Intelligent polygon cropping` option is activated in the settings,
CVAT considers two criteria to decide which part of a polygon should be cut off during automatic editing.
- The first criteria is a number of cut points.
- The second criteria is a length of a cut curve.
If both criteria recommend to cut the same part, algorithm works automatically,
and if not, a user has to make the decision.
If you want to choose manually which part of a polygon should be cut off,
disable `Intelligent polygon cropping` in the settings.
In this case after closing the polygon, you can select the part of the polygon you want to leave.
![Setting for Intelligent polygon cropping](/images/image209.jpg)
- You can press `Esc` to cancel editing.
![Example of editing a polygon shape and canceling editing](/images/gif007_mapillary_vistas.gif)