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To configure close-standing people detection, you should specify the Distance Sensitivity parameter. Set its value empirically within the range from 0 to 500.

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By default, the Сlose-Standing People detection tool triggers when bounding boxes around individuals collide. 

You can set another triggering distance by adjusting perspective:

1. Select a detection tool, and click Image Added in the preview window.

2. Set the size of the same object in different areas of the field of view. To create a calibration length, left-click within the video image in the viewing tile and add  two anchor points. Set at least three calibration lengths. You can resize the length by stretching its anchor points Image Added. You can move it on screen by dragging and dropping.
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   Note
   title Attention!
   Leveling rods should: not be located on the same line; have different height.

   
   

   Info
   title Note
   For your convenience, you can click the Image Added button and configure the mask on a still frame / snapshot. To undo, click this button again.

   
   

   Info
   title Note
   To delete it, click the Image Added button.

   
   

3. Enter a triggering distance value (1) in meters into the Distance Sensitivity field. The detection tool will trigger if the current distance becomes equal or less than this value.
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4. Enter the height (in meters) of the leveling rod into the Leveling Rod Height field (2)

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