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The Queue length detection module can be configured on the settings panel of the Queue length detection object created under the Camera object in the Hardware tab of the System settings dialog box.

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Configure the Queue length detection module as follows:

1. Go to the Queue length detection setting panel.
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2. Click the Settings button.
   The Detection settings window appears.
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3. Specify the area of interest and the approximate size of a person in the video image:
   1. Click the Stop video button to capture the video image (1).
   2. Click the Area of interest button (2).

   3. Using the left mouse button, select the four points of the area in the captured video image (3) to be analyzed (1). Only one area can be added. If a second area is specified, then the first area will be deleted. Upon selection of the area the remaining part of the video image will be dimmed.

      Info
      title Note
      To remove a selected area, click the Image Removed the button Image Added next to the Area of interest button.

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      Note
      title Attention!
      Setting the Area of interest is a mandatory requirement for the detection module operation.

      
      

   4. Click the Size of manperson button (2).

   5. In the captured video image (1), specify the approximate size of a person. To do this, use the left mouse button to specify a rectangular area (1).

      Info
      title Note
      To remove the person size, click the Image Removed the button Image Added next to the Size of manperson button.

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4. Set the module parameters:
   1. Go to the Parameters tab (2).
   2. Set the detection sensitivity field in a range from 0 to 1 with up to two decimal places (1). The higher sensitivity is, the less significant objects will be considered as a queue. i.e. the algorithm will react to more inconsiderable motion. So, only considerable change of the scene will be analyzed by the queue length detection if the minimum value of the detection sensitivity is specified.
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   3. In the Periodicity of employment measuringoccupancy measurement, s field, specify a time period in seconds for counting the number of people in the observed area (2). The minimum value of this parameter is an interval between frames of analyzed video stream, but not less than 1 one second and not more than 3600 seconds. The value of the parameter depends on the scene characteristics. For example, if a queue in the field of video camera view is not changing for a long time, than the parameter value can be reasonably be reasonably large. It is not recommended to specify value of this parameter more than 3-5 minutes for the correct working operation of algorithm on the average scene.

      Info
      title Note
      The more frequently periodicity of employment often the occupancy is measured, the more frames are analyzed by algorithm and the higher greater the load on the system capacity is.

      
      

   4. Set the Reduce large resolution checkbox to create and process the new frame consisting of even lines of the initial frame (3).
   5. In the Generate employment event, people field specify the value of the Queue length detection counter (number of people). If this value is exceeded, then the Queue length (OCCUPANCY_EVENT) event is generated by the Queue length detection object (4). The event have the following parameters: current counter value (occupancy<>) and the threshold value (raise_count<>). The event can be used in scripts and programs (see Programming Guide (JScript) and Programming Guide for more info on scripts and programs; the most relevant versions of these documents can be found in AxxonSoft documentation repository)the Queue size, person field, enter the minimum number of people in a queue required for triggering the detection tool (4).

   6. In the Frames processed per second (0.016-100) field, enter the number of frames per second that the detection tool will process (5). The higher the value, the more accurate the detection tool's operation, but the higher the load on the processor.

      Info
      title Note
      All events from the Queue length detection object  object can be found in the Event log. See Obtaining traffic information in the area of interest.

      
      

5. Click the OK button to save changes and return to the settings panel of the Queue length detection object (56).

   Info
   title Note
   To return to the settings panel of the Queue length detection object without saving changes, click the Cancel button (67).

   
   

6. Click Click the Apply button on the settings panel of the Queue length detection object.

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