Manual

Network Video Recorder User Manual
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Figure 12-11 Sudden Scene Change
Step 3 Select a Camera to configure.
Step 4 Check Enable Sudden Scene Change Detection.
Step 5 Optionally, check Save VCA Picture to save the captured pictures of sudden scene change
detection.
Step 6 Drag the Sensitivity slider to set the detection sensitivity. Sensitivity range: [1-100]. The
higher the value is, the more easily the change of scene can trigger the alarm.
Step 7 Set the arming schedule. Refer to Chapter 11.1 Configure Arming Schedule.
Step 8 Set the linkage actions. Refer to 11.2 Configure Alarm Linkage Actions.
Step 9 Click Apply.
12.11 Defocus Detection
Purpose:
The image blur caused by defocus of the lens can be detected.
Step 1 Go to System > Event > Smart Event.
Step 2 Click Defocus.