General information on metadata

Metadata is information that describes object-related content in the camera FOV.

In Axxon One, metadata can be obtained in two ways:

1. By analyzing video stream on Server by detection tools.
2. By receiving metadata from camera embedded analytics (see Embedded Detection Tools). 

The following tools are used for the Server-side analysis and metadata generation:

1. Object Tracker.

2. Neural Tracker.

   Note

   Object tracker and Neural Tracker generate metadata containing the following information about moving objects in FOV: object type, position, size and color, motion speed and direction, etc.

3. VMD.

   Note

   VMD generates less accurate data. It does not detect object type and color.

4. Face detection tools.

   Note

   Face detection metadata contains face bounding boxes and their positions, as well as face vectors.

5. License Plate Recognition and Vehicle Recognition detection tools.

   Note

   ANPR metadata contains license plate bounding boxes and their positions, as well as vehicle registration numbers.

6. Pose detection.

   Note

   Metadata from pose detection tools contains information on positions and pose (skeleton) of all people in FOV. 

7. Personal protective equipment detection tools.

   Note

   Equipment detection metadata contains information about the position of all the people in FOV.

8. Barcode Detection.
   

   Note

   Metadata from the Barcode Detection contains information about the contents of all barcodes in the frame.

The metadata is used for the following system options:

By default, 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.