Metadata is information that describes the behavior of objects in the camera FOV.
In Axxon One, you can get metadata in two ways:
To get metadata, video is decompressed and analyzed, which leads to a heavy load on the Server and limits the number of cameras that you can use on it. |
The following tools are used for the Server-side analysis and metadata generation:
| Detection tool | Information contained in metadata from the detection tool |
|---|---|
| Neurotracker | Metadata from Object Tracker and Neurotracker contains the following information about all objects moving in the frame: object type, position in the frame, size and color, speed, direction of movement, and so on |
| Object Tracker | |
| Motion detection | Metadata from Motion detection is less accurate and doesn't contain information about object type and color |
| Face Detection VA | Metadata from Face Detection contains a face bounding box, its position in the frame, and a face vector |
| Face Detection TV | |
| Face Detection VL | |
| License Plate Recognition BRS | Metadata from License Plate Recognition detection tools contains a license plate bounding box, its position in the frame, and a vehicle license plate |
| License Plate Recognition IV | |
| License Plate Recognition RR | |
| License Plate Recognition RR—Search In Archive | |
| License Plate Recognition RR—Parking | |
| License plate recognition (VT) | |
| Vehicle Recognition RR | Metadata from Vehicle Recognition contains a vehicle bounding box that is built around vehicle outline, position of the vehicle bounding box in the frame, information about the vehicle model, manufacturer, color, and class |
Pose Detection and its sub-tools: | Metadata from Pose Detection tools contains information about positions and pose (skeleton) of all people in the frame |
| Equipment detection tool (PPE) | Metadata from Equipment detection contains information about the position of all people in frame |
| PPE detection VL | |
| Barcode Detection | Metadata from Barcode Detection contains information about the contents of all barcodes in the frame |
Metadata is used for the following system options to work:
If a camera uses several sources of metadata, the required source is selected automatically, except for MomentQuest. To perform face/license plate search, only metadata from the corresponding detection tools is used. |
Metadata is stored as files in the object tracks database in the local Server directory that was selected when installing Axxon One (see Installation) in the vmda_db\VMDA_DB.0\vmda_schema subfolder.
If necessary, you can place metadata on any available network storage (see Configuring storage of the system log and metadata). |