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To extract metadata from video, you have to de-compress and analyze the video stream, which , increases the Server's workload, thus limiting the number of available camera channels. |
The following tools are used for server-side analysis and metadata generation:
Info title 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.
VMD.
Info title Note VMD generates less accurate data. It does not detect object type and color.
Info title Note Face detection metadata contains facial face bounding boxes and their positions, as well as facial face vectors.
Automatic Number Plate Recognition (LPR/ANPR) tools.
Info title Note ANPR metadata contains license plate bounding boxes and their positions, as well as vehicle registration numbers.
Info title Note Metadata from pose detection tools contains information on positions and pose (skeleton) of all people in FOV.
Equipment detection tool (PPE)
Info title Note Equipment detection metadata contains information about the position of all the people in FOV.
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Option | Required source of metadata |
Object Tracker, Neural Tracker, built-in detection tool, or VMD. | |
Object Tracker, Neural Tracker, built-in detection tool, VMD, Face detection tools, Automatic Number Plate Recognition (LPR/ANPR) tools, Pose detection tools, Equipment detection tool (PPE). | |
Object Tracker, Neural Tracker, built-in detection tool, or VMD. | |
Object Tracker, Neural Tracker, built-in detection tool, or VMD. | |
Any | |
Any |
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For Axxon Next 4.5.10 and later: metadata is stored as files in the object trajectory database in the local Server directory that was selected when installing Axxon Next (see Installation, point 11) , in the vmda_db\VMDA_DB.0\vmda_schema subfolder.
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