logofirst
logofirst

Label and annotate data in Label Studio

Label and annotate your data with the open source data labeling tool, Label Studio. After you set up your project and import your data, you can start labeling and annotating your data.

  1. Inside a project, click Label to start labeling.
  2. Use keyboard shortcuts or your mouse to label the data and submit your annotations.
  3. Follow the project instructions for labeling and deciding whether or not to skip tasks.
  4. Click the project name to return to the data manager.

When collaborating with other users, tasks are locked so that you don’t accidentally overwrite the annotations of another annotator. After the other annotator finishes with the task, it can appear in your queue for labeling.

Complex annotation actions

Some labeling tasks can be complicated to perform, for example, labeling that includes text, image, and audio data objects as part of one dataset and labeling task, or creating relations between annotations on a labeling task.

Label a region in the data

Annotate a section of the data by adding a region.

  1. Select the label you want to apply to the region. For some configurations, you can skip this step.
  2. Click the text, image, audio, or other data object to apply the label to the region.

Your changes save automatically.

Change the label

You can change the label of the existing region.

  1. Select the labeled region, for example a span, bounding box, image segment, audio region, or other region.
  2. Select a new label.

Your changes save automatically.

Delete an annotation

After labeling a region, you can delete the annotation.

  1. Select the labeled region.
  2. Press the Backspace key, or go to the Results panel and remove the selected annotation.

Add relations between annotations

You can create relations between two results with both directions and labels. To add labels to directions, you must set up a labeling config with the relations tag. See more about relations with labels in the Tags documentation.

  1. Select the region for the annotation that you want to relate to another annotation. If you’re creating a direction-based relation, select the first one first.
  2. In the Regions section of the Results sidebar, click the Create Relation button that looks like a hyperlink icon.
  3. Select the second region for the annotation to complete the relation.

After you relate two annotation regions, you can modify the relation in the Relations section of the Results sidebar.

Use keyboard shortcuts to label regions faster

Use keyboard shortcuts (hotkeys) to improve your labeling performance. When performing a labeling task, click the gear icon to see more details about hotkeys or to enable or disable hotkeys.

This table describes the hotkeys for a standard keyboard. For a Mac keyboard, use return and delete instead of enter and backspace.

Key Description
ctrl+enter Submit a task
ctrl+backspace Delete all regions
escape Exit relation mode
backspace Delete selected region
alt+shift+$n For $n region, select a region

Customize the labeling interface

Click the gear icon when labeling to configure the labeling interface to suit your labeling use case.

For example, to display labels on bounding boxes, polygons and other regions while labeling:

You can modify the layout of the screen, hide or show predictions, annotations, or the results panel, and hide or show various controls and buttons.