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.

Drawing-a-ROI.mp4

Modify ROI(s)

Previously drawn ROI shapes can be modified:

Click the “Edit“ tool in the upper part of the right-hand toolbar.
Select a given ROI path - its editable anchor points appear as white squares.
Click and drag the anchor points to adjust the shape.

Editing-ROIs.mp4

Delete ROI(s)

Option 1:

Select an ROI you wish to be removed.
Click the “Trash-bin” tool in the upper part of the right-hand toolbar. You will be asked to confirm this action.

Option 2:

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

Deleting-ROIs.mp4

Important: This step cannot be undone!

Important: When choosing an ROI to delete, make sure the borders of the ROI are bold. Otherwise you might be deleting an annotation under the ROI. The “delete” window will inform you, if the selected object was an annotation or an ROI.

Further steps with ROIs
ROI Analysis	ROI preparation for AI app training
How to analyze ROIs?	Introduction into IKOSA AI app training

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