[Technical Notice] How to Set Noise Tolerance to Avoid False Alarm

[alexhon]

Article ID: GV28-11-09-19-t
Released Date: 09/19/2011


Applied to
GV-DVR / NVR

Summary
When video images appear grainy especially under low light conditions, you can reduce the chance of false motion detection by activating the Noise Tolerance function and then adjusting the noise tolerance level according to the amount of noise.

The noise tolerance function can be applied to Motion Detection, Advanced Motion Detection and Object Index functions. For Motion Detection and Advanced Motion Detection, if the Noise Tolerance function causes small motion to go undetected, you can increase the Motion Sensitivity level to make the system more sensitive to motion.


Motion Detection

Follow the steps below to set Noise Tolerance and Motion Sensitivity:

1. On GV-DVR / NVR, click the Configure button and select Camera Configure. This dialog box appears.

   

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2. To activate and adjust noise tolerance
   1. In the Motion Detection section, click the arrow button next to Motion Sensitivity and select Noise Tolerance.

      

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   2. Select Activate Noise Tolerance and adjust the tolerance level.

      

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   3. Click OK.
3. To adjust motion sensitivity, move the Motion Sensitivity slider to adjust the sensitivity level. The higher the value, the more sensitive the system is to the motion.

   

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4. Click OK.

Advanced Motion Detection

1. On GV-DVR / NVR, click the Configure button, select Video Analysis and select Advanced Motion Detection Setting. This dialog box appears.

   

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2. To activate and adjust noise tolerance, select Noise Tolerance and adjust the tolerance level. The higher the level, the more tolerant the system is to video noise.
3. To adjust motion sensitivity, click Set region. Use the Sensitivity slider to adjust the sensitivity level and then drag an area on the image. The higher the value, the more sensitive the system is to the motion.
4. Click OK.

Object Index

Follow the steps below to set Noise Tolerance:

1. On GV-DVR / NVR, click the Configure button, select Video Analysis and select Object Index/Monitor Setup. This dialog box appears.

   

   Screenshot_6.jpg (50.23 KiB) Viewed 1897 times

2. To activate and adjust noise tolerance, select Noise Tolerance and adjust the tolerance level. The higher the level, the more tolerant the system is to video noise.
3. Click OK.