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The Face detection basic object is triggered every time a face is captured in the frame. Basic object is enough to perform a search for faces in the archive (see Face search).
In addition, the following types of Face Detection tools detection tools based on metadata from the face detection (see General information on metadata) are available in Axxon Next:
- Appearance in area – a detection tool is triggered by the appearance of an object and subsequent face capture in FoV.
- Loitering in area – a detection tool triggered by the lengthy presence of an object and its face capture in FoV.
Face recognition evasion detection - triggers when anyone in scene wears dark glasses or covering masks, or uses other masking tricks.
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- All captured facial images are vectorized* and stored in the t_face_vector table, and their corresponding capture events are stored in the t_json_event table.
- Reference images (see Lists of facial templates) are stored in the t_face_listed table.
* Facial vector : is the mathematical representation of a facial image created upon face capture.
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These detection tools require Addon Face Recognition Pack to be installed (see Installing DetectorPack add-ons). |
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With an increase in the number of faces in the database, the statistical error increases: the more faces in the database, the more often similar faces will be recognized when searching in the archive. Accordingly, the degree of similarity when comparing the reference face with the captured face will decrease. This statistical error is relevant if:
An example of the results of calculating the error:
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