Annotation with ellipses - Cvat

It is used for road sign annotation etc.

First of all you need to select the ellipse on the controls sidebar.

Choose a Label and click Shape or Track to start drawing. An ellipse can be created the same way as a {{< ilink "/docs/annotation/manual-annotation/shapes/annotation-with-rectangles" "rectangle" >}}, you need to specify two opposite points, and the ellipse will be inscribed in an imaginary rectangle. Press N or click the Done button on the top panel to complete the shape.

You can rotate ellipses using a rotation point in the same way as {{< ilink "/docs/annotation/manual-annotation/shapes/annotation-with-rectangles#rotation-rectangle" "rectangles" >}}.

Annotation with ellipses video tutorial