To configure visitors counter detection tool, do as follows:

1. Select the Visitors counter object. 
   

2. Configure parameters.
   

   Parameter	Description
   Enable	Enable/disable detection tool.
   Decoder mode	Select a processing resource for decoding video streams. When you select a GPU, a stand-alone graphics card takes priority (when decoding with NVidia NVDEC chips). If there's no appropriate GPU, the decoding will use the Intel Quick Sync Video technology. Otherwise, CPU resources will be used for decoding.
   Frame size change	By default, the frame is compressed to 1920 pixels on the longer side. To avoid detection errors on streams with a higher resolution, it is recommended that compression be reduced.
   Human size	Set the approximate size of a human.  The value should be within the range of 0,25 – 10.
   People indoor counter	By default, the detection tool outputs the Camera. Visitor access in the direction of "Entrance" and Camera. Visitor access in the direction of "Exit" events. If total footfall and visitor number control / exceeding notification is required, do the following: Activate the People indoor counter parameter. Enter the current number of visitors within the area. Set the threshold value for the visitor counter; exceeding this limit will generate the corresponding event .
   Number of people indoor
   People indoor counter threshold

   
   

3. Click  to save changes.

The detection tool is now configured.