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Fig. 53: Configuration of AI-PEOPLE
The configuration section provides the following functions:
Reset counters: when checked the counters associated to the counting sensors will resetted when the
application is restarted.
Add Sensor: Click this button to draw a virtual sensor with the mouse method “click and drag”. The sensor
can be moved and changed in its size, by dragging the nodes. You can direct the sensor (the counting
direction is given by the arrow), for example rotating the sensor until the arrow points to the desired
direction, or specify if the sensor is monodirectional rather than bidirectional .
Remove sensor: Click this button to remove the selected sensor from the configuration.
Real width (m): real width of the sensor in meters. The empirical rule to specify this value, used when the
real dimension is not measurable, suggests to compute the maximum number of people who can cross the
gate at the same time multiplied for 0.75. However, it approximates the real condition and may not be
precise enough.
Bidirectional: specify if the sensor is mono or bidirectional.
Sensor name: this name uniquely identifies the main counting sensor (green arrow); is used to generate
counting events, sent, for example, to AI-Dash.
Sensor name (reverse direction): this name uniquely identifies the counting sensor in the reverse direction
(red arrow); is used to generate counting events, sent ,for example, to AI-Dash;
Sensor activation threshold: A value too small (< 0,1) would make the sensor very sensitive and the sensor
could give false positive in this case. A value too big (> 0,6) would make the sensor not very sensitive and in
this case, the sensor could miss some person crossing.
After checking Enable aggregate counting, it’s possible to send the events if the difference between
entrances and exits is over a certain threshold (see AI-PEOPLE: Aggregate counting, p. 88).
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