Data sources
AXIS Scene Metadata provides several data sources that delivers information about object in the scene. This section provides an overview of the available data sources and their availability.
Frame-by-frame object tracking
Delivers information about all tracked objects in the scene for each video frame. The source of this data is the Fusion tracker producer.
| Topic | Availability | Released | Latest version | Data type | Comments |
|---|---|---|---|---|---|
| com.axis.scene.frame.v1 | MQTT, Device Data Hub, ONVIF RTSP * | 12.8 | 1.0 | Frame | First stable release |
| com.axis.analytics_scene_description.v0.beta | MQTT | 0.1-beta | Frame | Deprecated. Superseded by com.axis.scene.frame.v1 |
* ONVIF RTSP stream supports a subset of the data. See ONVIF RTSP for details.
Consolidated object information
Delivers information about tracked objects when an object tracking session ends. One message per object. An object snapshot is also included if enabled. The source of this data is the Track Consolidation producer.
| Topic | Availability | Released | Latest version | Data type | Comments |
|---|---|---|---|---|---|
| com.axis.scene.object_track.v1 | MQTT, Device Data Hub | 12.8 | 1.0 | ObjectTrack | First stable release |
| com.axis.consolidated_track.v1.beta | MQTT | 1.0-beta | Consolidated Track | Deprecated. Superseded by com.axis.scene.object_track.v1 |
Object snapshots
Delivers image snapshots of tracked objects. One message per snapshot and one snapshot per object. This topic needs to be enabled. The source of this data is the Fusion tracker producer.
| Topic | Availability | Released | Latest version | Data type | Producers | Comments |
|---|---|---|---|---|---|---|
| com.axis.scene.object_snapshot.v1 | MQTT, Device Data Hub | 12.8 | 1.0 | ObjectSnapshot | Fusion tracker |