Network Video Recorder User Manual
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6.2.10 Defocus Detection
Image blur caused by lens defocus can be detected.
Steps
1. Go to Smart Analysis → Smart Event Settings → Other Events.
2. Select a camera.
3. Click Defocus.
Figure 6-10 Defocus Detection
4. Check Enable.
5. Optional: Check Save VCA Picture to save the captured defocus detection pictures.
6. Set the detection sensitivity.
Sensitivity
Sensitivity range: [1-100]. The higher the value is, the more easily the defocus image will be
detected.
7. Set the arming schedule. Refer to Configure Arming Schedule.
8. Set the linkage actions. Refer to Configure Linkage Actions.
9. Click Apply.
6.2.11 Sudden Scene Change Detection
Scene change detection detects the change of the surveillance environment affected by external
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