Documentation for Detector Pack 2.7. Documentation for other versions of Detector Pack is available too.

Previous page Configuring detection modules  Configuring the «People counter detection» module Next page


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.

Configure the Queue length detection module as follows:

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

      Note

      To remove a selected area, click the  button next to the Area of interest button.

    4. Click Size of man (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).

      Note

      To remove the person size, click the  button next to the Size of man button.

  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.

    3. In the Periodicity of employment measuring, 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 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 large. It is not recommended to specify value of this parameter more than 3-5 minutes for correct working of algorithm on the average scene.

      Note

      The more frequently periodicity of employment is measured, the more frames are analyzed by algorithm and the higher 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).

      Note

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

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

    Note

    To return to the settings panel of the Queue length detection object without saving changes, click Cancel (6).

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

Configuring the Queue length detection module is completed.