Documentation for Axxon One 2.0. Documentation for other versions of Axxon One is available too.

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Image requirements for the Visitors counter

Requirements for the operation of the Visitors counter are given in the table:

Camera

  • Resolution: 720х576 (CIF4), 360х288 (CIF1) is also allowed. Increasing the resolution above CIF4 doesn't improve the performance of the recognition algorithm
  • FPS is 25
  • Color: only color camera
  • No camera shake
Lighting
  • The best performance of the detector is achieved under moderate lighting. In conditions of insufficient (night) or excessive (light-striking) lighting, the algorithm performance can decrease
  • Abrupt changes in lighting can lead to short-term incorrect operation of analytics

Scene and camera angle

  • The best position is the camera looking down at the scene. The better this requirement is met, the more accurate the estimate is
  • Dimensions of the camera FOV: minimum 2x2 m, optimal 4x4 m
  • The background is mostly static and doesn’t change abruptly
  • There are no moving objects in the counting area except for people
  • Analytics can work incorrectly on reflective surfaces, and if there are sharp shadows from moving objects
  • Analytics can work incorrectly if there are periodic movements of background objects in the camera FOV (trees, TV is on, and so on)
  • People are minimally obscured by static objects in the scene (columns, trees, and so on)
  • People must not move in solid stream. Groups of a few people are counted correctly
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