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1. Go to the Smoke detection object's control panel.
   

2. In the Skip repeated recognitions, sec field(1) enter the period in seconds during which the repeated smoke recognition will be ignored. 

   Info
   title Note
   For example, if 5 seconds is set for the Time in seconds between processed frames parameter, and there is a smoke on the image during a longer period of time, then in order to avoid receiving messages of smoke from the detector every 5 seconds, set a higher value for the Skip repeated recognitions, sec parameter (for example, 10 seconds). In this case, only one message about the smoke will be displayed, and all the repeated recognitions will not be displayed in the Event viewer until the time interval between the recognitions of the smoke becomes longer than 10 seconds.

   
   

3. In the Detection sensitivity: 0..100 field (2) enter the sensitivity of detection – integer value from 0 to 100. This parameter has an impact on sufficient probability of smoke recognition for alarm. For example, if sensitivity is 0, than frame on which smoke is recognized with certainty more than 95% will be alarming. If sensitivity is 100, than frame with 50% certainty of smoke recognition will be alarming.
4. In the Time in seconds between processed frames field (3) enter the time period in seconds separating frames used by algorithm for smoke analysis. This parameter has an impact on processor capacity: the less the parameter, the more capacity. Also it has an impact on operation speed of algorithm: the less distance between frames. the faster required number of frames will be collected for decision and alarm, if it's required.

5. In the Number of frames for analysis and output field(4) enter minimum number of frames for detection analysis before alarm generating. The more the value, the more certain the result of detection operation. At the same time, if value is too large, the short-time smoke can be missed.

   Info
   title Note.
   Multiplication of Time in seconds between processed frames * Number of frames for analysis and output parameters characterizes time period (in seconds) at the end of which after smoke alarm will be triggered.

   
   

6. In the Device (5) drop-down list select the device where the smoke detection will operate:

   1. Auto — automatic device selection.

   2. CPU — central processing unit (not recommended).

   3. Nvidia NVIDIA GPU (depends on the number of installed Nvidia NVIDIA video cards).

7. Specify the detection surveillance area on the video image:
   1. Click the Setup (6) button. The Detection settings window will open. 
           
   2. Click the Stop video (1) button to capture the video image.
   3. Click the Area of interest (2) button.
   4. Specify area on which smoke recognition will be detected (3).
   5. Click the OK (4) button.
8. Click the Apply (7) button.

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