Setting up the detection variables

Setting up the detection variables is done in the following way:

1. Go to the Vehicle detector object settings panel.
   

2. In the Front angle field enter the camera's front angle in respect of the vehicle (1).

   Note.

   This angle is a projection to a vertical angle plane, parallel to the road, formed by a vertical camera's mount and optical axis of the camera's objective.

   Note.

   Camera's front angle is one of the arguments while calculating the vehicle's speed and mustn't exceed 45°.

3. Enter the value of detector's sensitivity threshold, that leads to detector's triggering if exceeded in the Detection threshold field (2). Sensitivity threshold is set in sensitivity conventional units. This value is selected in an experimental way for every detector (from 15 to 30).

   Note.

   The sensitivity threshold should be selected so, that the possibility of both false triggering and vehicle's passing could be minimal.

4. Enter the value of detector's noise threshold in the Noise threshold dropdown list (3). This value should always be 10% - 30% less than the sensitivity threshold.

   Note.

   For detection threshold parameter it is recommended to install the value 20, for noise threshold - 16.

5. For enabling the vehicle detection algorithm with extremely noisy video signal set the Noise filtering checkbox (4).

   Note.

   Enabling this setting leads to greater CPU load of the Auto-Intellect server.

   Setting the detection variables is completed.