Classes and attributes

Assign class or attribute

Bounding Box

You can assign a class/attribute to a Bounding Box in 3 ways:

Method 1

Right-click on a Bounding Box and choose a class/attribute from the drop-down list.

Method 2

Select a Bounding Box and choose a class/attribute from the drop-down list in the right panel.

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When you add an attribute to a Bounding Box, it’s applied to the Bounding Box from the timeframe you added it till the end of the video.

To limit a Bounding Box's attribute to a certain timeframe:

  1. On the timeline, right-click where you want the Bounding Box's attribute to end.
  2. Delete the attribute.

Method 3

You can assign a class to a Bounding Box before annotating it.

  1. In the left panel, select the class selection tool.
  2. Choose a class.
  3. Select the Bounding Box tool in the left panel.
  4. Annotate the object.

The same Bounding Box can have multiple attributes.

To assign multiple attributes to the same Bounding Box:

  1. Assign an attribute to a Bounding Box.
  2. Pause the video where you want to add a new attribute.
  3. Add a new attribute. The new attribute will be interpolated till the end of the video.
  4. Pause the video where you want the new attribute to end. You can choose to add a new attribute or turn off the interpolation toggle.

📘

A white icon appears on the timeline whenever you add a new attribute to a Bounding Box. The icon is located at the point in time where you added the attribute.

Event

You can assign a class/attribute to an Event in 2 ways:

Method 1

In the timeline, right-click on an event and choose a class/attribute.

When you add an attribute to an Event, it’s applied to the entire Event.

To limit an attribute to a certain timeframe in an Event:

  1. On the timeline, right-click where you want the Event's attribute to end.
  2. Remove the attribute.

📘

A white icon appears on the timeline whenever you add a new attribute to an Event or remove an attribute. The icon is located at the point in time where you added or removed the attribute.

Method 2

You can assign a class to an Event before annotating it. Follow these steps:

  1. In the left panel, click the class selection tool.
  2. Choose a class from the drop-down list.
  3. In the left panel, click Event or press E on the keyboard.
  4. Hover over the timeline and place the cursor where you want the Event to start.
  5. Click on the + button. The Event will be interpolated till the end of the video.
  6. Hover over the timeline and place the cursor where you want the Event to end.
  7. Click the checkmark button.
    OR
    On the timeline, click where you want the Event to end. Next, turn off the interpolation toggle that corresponds to the Event in the right panel.
    OR
    Pause the video where you want the Event to end and press the Backspace or Delete key on the keyboard.

Assign multiple attributes to the same Event

An Event can have different attributes.

To assign multiple attributes to the same Event:

  1. On the Event in the timeline, right-click where you want to change the attribute.
  2. Choose a different attribute from the drop-down list.

📘

A white icon appears on the timeline whenever you add a new attribute to an Event. The icon is located at the point in time where you added the attribute.

Change class or attribute

Bounding Box

To change the class/attribute of a Bounding Box:

  1. Right-click on a Bounding Box.
  2. Choose a class/attribute from the drop-down list.

Event

To change the class/attribute of an Event:

  1. In the timeline, right-click on an Event.
  2. Choose a class/attribute from the drop-down list.

Change class in bulk

To change the class of a group of instances that have the same class:

  1. In the left panel, select the drop-down list.
  2. Choose a class.

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