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To configure the Visitors counter detection tool, do the following:

1. If the camera supports multistreaming, select the stream to be used for which detection is needed. Select a low-quality video stream to reduce the Server load (1).
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2. Enable the detection tool—select Yes for the corresponding parameter (2).
3. Enter the detection tool name or leave the default name (3).
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4. Select a processing resource for decoding video streams (24). When you select a GPU, a stand-alone graphics card takes priority (when decoding with NVidia 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.

5. By default, during analysis the frame is compressed during the analysis to the specified size (35, the default size is 1920 pixels on the larger side). In this case, the The following algorithm is used:

   1. If the original resolution on the larger side of the frame is greater than the one specified in the Frame size change field, then it is divided in half.
   2. If the resulting resolution is less than the specified one, then the algorithm stops and this resolution is used.

   3. If the resulting resolution is still greater than the specified one, then it is divided in half until it becomes less.

      Info
      title Note
      For example, the original video resolution is 2048*1536, the specified value is 1000. In this case, the original resolution will be halved 2 times (512*384), because after the first division, the value on the larger side of the frame will be greater than the specified value (1024 > 1000).

      
      

      Info
      title Note
      To avoid If detection errors is performed on streams with a higher resolution stream and detection errors occur, it is recommended that to reduce the compression be reduced.

      
      

6. Set the frame rate value for the detection tool to process per second (46). This value should be in the range [0,.016; 100]. .

7. Click the Image Added button and specify the approximate size of a human (7). You can do this by dragging the anchor points of the rectangular area. You can also specify the size of a human manually by entering into the Human size field the area of the rectangle around a human as a percentage of the frame area. Consider that to calculate the size, the size of the compressed frame is taken into account (see item 3) and not the original size of the video stream.

   Note
   title Attention!
   When specifying the size of a human, consider the Requirements for the person size in the frame.

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8. By default, the detection tool outputs generates 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 requiredyou also want to count visitors at the facility, and it is necessary to trigger an alarm when the threshold value is exceeded, do the following:

   1. Select Yes for the People indoor counter parameter (69).

   2. Enter the current number of visitors within in the area (5at the time of the detection tool configuration (8).
   3. Set the threshold value for the Visitors counter; exceeding this limit will generate the corresponding event (7number of visitors, above which the event will be generated (10).

9. In the Preview preview window, set the detection area. It The detection area is divided to into two sectors, #1 —1 and #22. When an object moves from #2 sector 1 to #1sector 2, the system treats it as entry; alternatively, #1 to #2 is treated . When an object moves from sector 2 to sector 1, the system treats it as exit.
   To You can configure the sectors, you can drag them by corners Image Removed or sidesusing the anchor points Image Added or lines. 
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   To swap sectors, just click inside one of them.

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   title Note
   To showdisplay/hide sectors in the Preview preview window, click the Image Removed Image Added button.

   
   

10. Click Image Removed and specify the approximate size of a human. You can do so by dragging the corners of the rectangular area.  Note

    title	Attention!

    When specifying the size of a person, consider the Requirements for the person size in the frame.

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    Click ApplyApply button.

Configuration of the Visitors counter detection tool is now complete.