Guide to using the Filter feature in CVAT.

There are some reasons to use the feature:

  1. When you use a filter, objects that don’t match the filter will be hidden.
  2. The fast navigation between frames which have an object of interest. Use the Left Arrow / Right Arrow keys for this purpose or customize the UI buttons by right-clicking and select switching by filter. If there are no objects which correspond to the filter, you will go to the previous / next frame which contains any annotated objects.

To apply filters you need to click on the button on the top panel.

It will open a window for filter input. Here you will find two buttons: Add rule and Add group.


The “Add rule” button adds a rule for objects display. A rule may use the following properties:

Supported properties:

Properties Supported values Description
Label all the label names that are in the task label name
Type shape, track or tag type of object
Shape all shape types type of shape
Occluded true or false occluded (read more)
Width number of px or field shape width
Height number of px or field shape height
ServerID number or field ID of the object on the server
(You can find out by forming a link to the object through the Action menu)
ObjectID number or field ID of the object in your client
(indicated on the objects sidebar)
Attributes some other fields including attributes with a
similar type or a specific attribute value
any fields specified by a label

Supported operators for properties:

== - Equally; != - Not equal; > - More; >= - More or equal; < - Less; <= - Less or equal;

Any in; Not in - these operators allow you to set multiple values in one rule;

Is empty; is not empty – these operators don’t require to input a value.

Between; Not between – these operators allow you to choose a range between two values.

Some properties support two types of values that you can choose:

You can add multiple rules, to do so click the add rule button and set another rule. Once you’ve set a new rule, you’ll be able to choose which operator they will be connected by: And or Or.

All subsequent rules will be joined by the chosen operator. Click Submit to apply the filter or if you want multiple rules to be connected by different operators, use groups.


To add a group, click the “add group” button. Inside the group you can create rules or groups.

If there is more than one rule in the group, they can be connected by And or Or operators. The rule group will work as well as a separate rule outside the group and will be joined by an operator outside the group. You can create groups within other groups, to do so you need to click the add group button within the group.

You can move rules and groups. To move the rule or group, drag it by the button. To remove the rule or group, click on the Delete button.

If you activate the Not button, objects that don’t match the group will be filtered out. Click Submit to apply the filter. The “Cancel” button undoes the filter. The Clear filter button removes the filter.

Once applied filter automatically appears in Recent used list. Maximum length of the list is 10.