DS-76xx-I2/xP/4S NVR UM
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Defocus Detection
Purpose
The image blur caused by defocus of the lens can be detected.
1) Go to System > Event > Smart Event.
2) Click Defocus.
Figure 12-12 Defocus Detection
3) Select a Camera to configure.
4) Check Enable Defocus Detection.
5) Optionally, check Save VCA Picture to save the captured pictures of defocus detection.
6) Drag the Sensitivity slider to set the detection sensitivity. Sensitivity range: [1-100].
The higher the value is, the more easily the defocus image can be detected.
7) Set the arming schedule. Refer to
Chapter 11.1 Configure Arming Schedule
.
8) Set the linkage actions. Refer to
Chapter 11.2 Configure Alarm Linkage Actions
.
9) Click Apply.
PIR Alarm
Purpose
A PIR (Passive Infrared) alarm is triggered when an intruder moves within the detector vision field. The
heat energy dissipated by a person or any other warm-blooded creatures, such as a dog, cat, etc., can
be detected.
1) Go to System > Event > Smart Event.
2) Click PIR Alarm.
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