Object Track

The Object Track links a series of Detections over time to represent the trajectory and state of a single object as it moves through the scene.

An Object Track identifier is created when an object is first detected and is appended with each new detection that can be associated with the existing track. The Object Track maintains a unique identifier for the object, allowing it to be consistently referenced across multiple frames.

The Object Track may also contain summarized and aggregated information over the lifetime of the track, such as:

• An image snapshot of the object
• The duration of the track
• Maximum speed observed
• A summary of the classifications and attributes observed during the track
• A list of all observations (detections) associated with the track, including bounding boxes and timestamps

This information provides a comprehensive overview of the object's behavior and characteristics throughout its presence in the scene and serves as an essential component for higher-level analytics and reporting where dealing with each detection is impractical or costly.

The Object Track is formalized and available via the ADF structure Object Track. It can be consumed via axis.scene.object_track_v1 once the tracking session for the object has ended. For real-time tracking the Object Track's identifier is also available in each Detection via the axis.scene.frame_v1 data source.