How to draw an ROI?

Define an area of an image for your image analysis or IKOSA AI app training.

Regions of Interest enable you to analyze solely parts of an image or to reduce the annotation effort.

Please note: to be able to draw an ROI, you need a previously created project and some uploaded images to it.

What to expect from this page?

What is an ROI?

It's an outline of a particular area within an image presenting one or more features.

How to manage ROI(s)?

Draw ROI(s)

Switch to “Region of Interest drawing mode” in the Image Editor from the right-hand toolbar.

Please note: the drawing tools panel will change its color to blue.

Within this toolbar, you can choose from the following ROI shapes:

  • Draw “Rectangle” ROI

  • Draw “Polygon” ROI

  • Draw “Circle” ROI

  • Draw “Freeform” ROI

By selecting one of these tools you can draw your ROI on the image by clicking and dragging your mouse cursor.

Choosing a shape and drawing an ROI

Modify ROI(s)

Previously drawn ROI shapes can be modified:

  1. Click the “Edit“ tool in the upper part of the right-hand toolbar.

  2. Select a given ROI path - its editable anchor points appear as white squares.

  3. Click and drag the anchor points to adjust the shape.

Modifying an ROI shape

Delete ROI(s)

Option 1:

  1. Select an ROI you wish to be removed.

  2. Click the “Trash-bin” tool in the upper part of the right-hand toolbar. You will be asked to confirm this action.

Option 2:

  1. Click the “Trash-bin” tool in the upper part of the right-hand toolbar.

  2. Click an ROI you wish to be removed. You will be asked to confirm this action.

Important: This step cannot be undone!


Further steps with ROIs

Further steps with ROIs

ROI Analysis

ROI preparation for AI app training


Now you know the most important facts on drawing regions of interest!


If you have any questions, please send us an email at support@ikosa.ai (copy-paste your training ID in your email if the question is related to your training).


Related articles

Copyright 2016-2021 KML Vision GmbH. IKOSA® is a registered EU trademark.