Documentation for DetectorPack PSIM 1.0.1.

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Operation of the detection of moving against crowd flow is controlled by the following parameters:

  1. Movement against a crowd—direction reversed to the direction in which a crowd is moving in the video image. Direction of crowd movement is called the right direction.
  2. Number of people in a crowd—minimum number of people moving in the direction of a crowd at which the detection should trigger.

If the number of people in a crowd moving in the right direction is less than the Number of people in a crowd parameter, the detection won't trigger.
If the number of people in a crowd moving in the right direction is greater or equal to the Number of people in a crowd, then:

  • if the number of people moving against a crowd is from 1 to 2 inclusive, the detection will trigger;
  • if the number of people moving against a crowd is 3 or more, the detection won't trigger;
  • if there are no people moving against a crowd, the detection won't trigger.

There won't be new triggers, until the person on whom the detection triggered, leaves the monitored area.

Example. A steady flow of people goes against a crowd. In the monitored area, only 1 or 2 persons move against a crowd. In this case, only one trigger will happen when the first person will go against a crowd. There won't be new triggers until a flow moving against a crowd doesn't stop.
If all people moving against a crowd left the monitored area, i.e., there is only a crowd moving in the right direction in the monitored area, and a new person moving against a crowd enters the area, then the detection will trigger.

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