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changes.mady.by.user Yulia Morozova

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The Face detection basic object is and Face detection (VL) object are triggered every time a face is captured in the frame. Basic object is enough to perform a search for faces in the archive (see Search for similar face).

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  1. Appearance in area – a detection tool is triggered by the appearance of an object and subsequent face capture in FoV.
  2. Loitering in area – a detection tool triggered by the lengthy presence of an object  and its face capture  in FoV.

  3. Face recognition evasion detection – triggers when anyone in scene wears dark glasses or covering masks, or uses other masking tricksMask detection – a detection tool is triggered by the face captured with or without a mask.

The Axxon Next database stores all faces in binary form:

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Note
titleAttention!

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:

  1. The Camera requirements Requirements for facial face detection tools are met.
  2. The database contains over a million faces.

An example of the results of calculating the error:

  1. Face detectordetection, mugshot dataset (good quality photo), 12 million faces in database, and false matching probability is 0.003%. With these initial data, the researchers obtained an identification error of 0.76%.
  2. Face detector detection (VL), the initial data are the same. The identification error is 0.81%.

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