Digital Video Recorder User Manual
142
9.15 Sudden Scene Change
Purpose
Scene change detection function detects the change of surveillance environment affected by the
external factors; such as the intentional rotation of the camera and some certain actions can be taken
when the alarm is triggered.
Please refer to the
Chapter 9.1 Face Detection
for operating steps to configure the scene
change detection.
The
Sensitivity
in the Rule Settings ranges from 1 to 100, and the higher the value is, the more
easily the change of scene can trigger the alarm.
For the analog cameras, the line crossing detection and intrusion detection conflict with other
VCA detection such as sudden scene change detection, face detection and vehicle detection.
You can only enable one function. If you have enabled line crossing detection or intrusion
detection, when you enable sudden scene change detection and apply the settings, the
following attention box pops up to remind you there is no enough resource and ask you to
disable the enabled VCA type(s) of the selected channel(s).
Figure 9-12
Disable Other VCA Type(s)
9.16 PIR Alarm
Purpose
A PIR (Passive Infrared) alarm is triggered when an intruder moves within the detector's field of
view. The heat energy dissipated by a person, or any other warm blooded creature such as dogs, cats,
etc., can be detected.
Step 1
Go to
Menu > Camera > VCA
.
Step 2
Select the camera to configure the VCA.
You can check the checkbox of
Save VCA Picture
to save the captured pictures of VCA
detection.
Step 3
Select the VCA detection type to
PIR Alarm
.
Step 4
Click
to configure the trigger channel, arming schedule, linkage action and PTZ linking
for the PIR alarm.
