Configuring the VI detection of movement in prohibited area program module

Configuration of the VI detection of movement in prohibited area program module includes general settings and configuration settings: detection zone, configuration parameters, and detector characteristics.

General settings

1. Go to the settings panel of the VI detection of movement in prohibited area object that is created on the basis of the Camera object on the Hardware tab of the System settings window.
   
2. In the Frames processed per second [1, 100] field, specify the number of frames in the range 1–100 that the detector processes per second. The default value is 12. You can specify only a positive integer. If you enter a number outside the range 1–100, it is automatically changed to the nearest border value. If you leave the field blank, it automatically returns to the default value when you save the settings.
3. Set the Use GPU checkbox if you want to use a graphics processor (NVIDIA GPU) when you work with a neural network.
4. Set the Show objects on image checkbox if you want to outline the detection zone with a red border on the Video surveillance monitor when a motion event is generated in the prohibited area. The prohibited area is specified in the detector settings on the Select area tab.
5. From the Detection filtering drop-down list, if necessary, select the filter that you want to use: Object filter, Object counting filter, or leave Do not use filter (default). You can configure filters on the Postprocessing tab of the Detection settings window.
6. Click the Configuration setup button. As a result, the detector settings window opens.

The Select area tab

1. In the Detection settings window, on the Select area tab, click the Stop video button to pause the video.
   
2. By default, one detection zone is outlined with a red border. You can add more zones with the mouse, as well as change the borders of a zone by clicking its number in the list on the right and highlighting it in blue color. 
   
3. To rename a detection zone, enter a new name in the field to the right of its number. The new name appears in the zone caption on the video image.
   

   Note

   To delete a detection zone, click the cross to the right of the zone name.

   If there are any incorrect zones among the specified ones, after you save and reopen the settings, only the correctly specified zones remain.

   If you specify only incorrect zones, they are automatically replaced with a default zone after you save and reopen the settings.

   After you delete all zones, save and reopen the settings, a default zone is automatically added.

4. Click the Apply configuration changes button to save all changes.
5. To start video playback, click the Start video button.

The Parameters tab

1. Go to the Parameters tab of the detector settings window. This tab displays the parameters of the used configuration. If you don't need to change the configuration, skip steps 2 and 3 and go to the next tab.
   
2. To use the custom configuration, click the Load configuration from file button.
3. In the standard Windows search window that opens, specify the path to the prepared configuration file in JSON format.

The Prohibited zone motion detection tab

1. Go to the Prohibited zone motion detection tab.
   
2. In the Sensitivity [0, 1] field, specify the detector sensitivity used to detect moving objects in the specified area in the range 0–1. The higher the sensitivity, the less noticeable an object can be detected. The default value is 0.10.
3. In the Reaction time (s) [0, 9999] field, specify the period of time in seconds in the range 0–9999, after which the alarm event Motion in the specified area is generated on the detector. The countdown begins from the moment the object enters the detection zone. If there is no movement during the reaction time, the timing stops and the counter is reset to zero. The default value is 0.
4. In the Dead time (s) [0, 9999] field, specify in seconds the time interval in the range 0–9999 during which the repeated event isn't generated. The default value is 0.
5. In the Head size [0, 1] field, specify in the range 0–1 what part of the video image height is the human head. The default value is 0.10.
6. In the Number of analytics streams field, specify the number of video streams that is used for the neural network analytics. The default value is 4.

The Postprocessing tab

You can use this tab to configure object filters or object counting filters according to the option selected from the Detection filtering drop-down list in the basic settings of the detector.

Object filter

1. To enable the object filter, select Object filter from the Detection filtering drop-down list in the basic settings of the detector.
2. Go to the Postprocessing tab.
3. From the Object filter list on the left, select one or more objects. If these objects are detected in the frame, the detector events are filtered. The events aren't displayed in the event viewer and on the screen.
   
   

   Note

   To remove the filter, click it again.

   
   
4. To apply the filter, click the Apply filter configuration button.

Object counting filter

1. To enable the object counting filter, select Object counting filter from the Detection filtering drop-down list in the basic settings of the detector.
2. Go to the Postprocessing tab.
3. Click the Add count filter button. In the section on the right, select one or more object counting filters. 
   
   
4. In the Min and Max fields, set the lower and upper threshold values for each object counting filter. If the number of objects of a given type in the detection area is within this range, the detector generates an event that is also displayed in the event viewer and on the screen. If the number of objects is greater or less than the set range, or there are no objects at all, then all events are filtered out and aren't displayed in the event viewer or on the screen.

   Note

   To remove the filter, click the cross to the right of it.

   
   
5. To apply the filter, click the Apply filter configuration button.

Click the OK button to save all settings of the detector. The Detection settings window closes, and you return to the detector settings panel.

To save all changes, click the Apply button on the settings panel of the VI detection of movement in prohibited area object.

Configuring the VI detection of movement in prohibited area program module is complete.