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Configuring detection tool

To configure the Line Crossing, do the following:

1. Create the required detection tool and specify its parameters (see Creating detection tools).
2. Below the created detection tool, click Create… → Line Crossing.

By default, the detection tool is enabled and triggers when an object crosses a virtual line.

If necessary, you can change the detection tool parameters. The list of parameters is given in the table:

After you create and select a line crossing detection tool, you can see a virtual "tripwire" line in the FoV. 

To set up line crossing detection, do the following:

...

To save the parameters of the detection tool, click the Apply Image Added button. To cancel the changes, click the Cancel Image Added button.

Configuring virtual line

To configure a virtual line, do the following:

1. In the preview window:
   
   1. Specify the end points of the line Image Added.
      Image Added
      

      Info
      title Note
      The end points line is being constructed, the end points are connected by a two-color dotted dashed line. The direction directions of the object's motion across object movement through the line is are indicated by dotted arrows. For convenience of configuration, you can "freeze" the frame. Click the Image Added button. To cancel the action, click this button again. To hide the virtual line, click the Image Added button. To cancel the action, click this button again.

      Action	Result

      Position

      Hover the cursor

      on an

      over the end point and, holding down the left mouse button, move the mouse

      Moves

      Moving the

      line

      end point of a line

      Position

      Hover the cursor

      on

      over the line and, holding down the left mouse button, move the mouse

      Moving the line

   2. By default, Line crossing detection monitors object motion across the line in both directions. To suspend detection of motion in one both directions of object movement through the line are detected. To stop the detection in the required direction, click the button Image Removed to that Image Added button corresponding to this direction.
      

      Note
      title Attention!
      At You must select at least one direction must be selected for detection.
      Info
      title Note
      An unmonitored direction of object motion movement is indicated by a dimmed arrow. Image Added

2. In the frame, there can be situations when one and the same object frequently moves If an object in FoV performs repetitive movements near the virtual line, it may which can cause excessive triggering of the detection tool. In this case, set an area within situation we recommend specifying the area of the object 's track which must cross track that completely crosses the line completely to trigger of the detection tool . To do it, set the X and Y offset values as percentage of track triggering. For this, in the detection tool parameters, specify the X-axis and Y-axis offsets as a percentage of the track area width and height.
   Image Removed
   Here's an example: For example, the green triangle rectangle is the object track of the object. If you specify the X-axis and Y offset values as -axis offsets are set to 25%, the detection tool will be triggered trigger only if the entire red triangle goes beyond the virtual red rectangle completely crosses the line.
   Image RemovedImage Added
3. Click the Apply buttonthe Apply button. Click the Cancel button to cancel the changes.