Label Images and Video

Label images and video

Load a set of images or a video, create label definitions. To get started labeling a collection of images, see Get Started with the Image Labeler. To get started labeling a video or sequence of images, see Get Started with the Video Labeler.

Apps

Image Labeler	Label images for computer vision applications
Video Labeler	Label video for computer vision applications

`cuboid2img`	Project cuboids from 3-D world coordinates to 2-D image coordinates (Since R2022b)
`groundTruthDataSource`	Object for storing ground truth data sources
`pixelLabelDatastore`	Datastore for pixel label data
`boxLabelDatastore`	Datastore for bounding box label data
`groundTruth`	Ground truth label data
`groundTruthFromCOCO`	Convert COCO JSON file into ground truth object (Since R2025a)
`groundTruthFromOpenLabel`	Convert OpenLabel JSON file to ground truth object (Since R2024b)
`groundTruthToOpenLabel`	Convert ground truth object to OpenLabel JSON file (Since R2024a)

`labelDefinitionCreator`	Object for storing, modifying and creating label definitions table
`create`	Create label definitions table from the label definition creator object
`info`	Display information about a label, sublabel, or attribute stored in label definition creator object

`addLabel`	Add label to label definition creator object
`addSublabel`	Add sublabel to label in label definition creator object
`addAttribute`	Add attributes to label or sublabel in label definition creator object

`editLabelGroup`	Modify a label group name
`editGroupName`	Change group name
`editLabelDescription`	Modify description of label or sublabel in label definition creator object
`editAttributeDescription`	Modify description of attribute in label definition creator object

`removeLabel`	Remove label from label definition creator object
`removeSublabel`	Remove sublabel from label in label definition creator object
`removeAttribute`	Remove attribute from label or sublabel in label definition creator object

Choose an App to Label Ground Truth Data
Decide which app to use to label ground truth data: Image Labeler, Video Labeler, Ground Truth Labeler, Lidar Labeler, Signal Labeler, or Medical Image Labeler.
Get Started with the Image Labeler
Interactively label rectangular ROIs for object detection, pixels for semantic segmentation, polygons for instance segmentation, and scenes for image classification.
Get Started with the Video Labeler
Interactively label rectangular ROIs for object detection, pixels for semantic segmentation, polygons for instance segmentation, and scenes for image classification in a video or image sequence.
Get Started with Team-Based Labeling
Use the Labeler app to create a labeling project to create labels, distribute label tasks, review tasks, and provide feedback.
Keyboard Shortcuts and Mouse Actions for Image Labeler
Use keyboard shortcuts and mouse actions to increase productivity while using the Image Labeler app.
Keyboard Shortcuts and Mouse Actions for Video Labeler
Use keyboard shortcuts and mouse actions to increase productivity while using the Video Labeler app.