Defocus Detection; Sudden Scene Change - Grundig GD-RT-AC3016N User Manual

Sound Intensity Threshold: Range [1-100], it can filter the sound in the
environment, the louder the environment sound, the higher the value should be.
You can adjust it according to the real environment.
3) Check the checkbox of Sudden Decrease of Sound Intensity Detection to detect
the sound steep drop in the surveillance scene. You can set the detection sensitivity
[1-100] for sound steep drop.
Step 6 Click Apply to activate the settings.

10.14 Defocus Detection

This function may not be available in each recorder model.
The image blur caused by defocus of the lens can be detected, and some certain actions
can be taken when the alarm is triggered.
Note:
 Please refer to the Chapter 9.1 Face Detection for operating steps to configure the
defocus detection.
 The Sensitivity in the Rule Settings ranges from 1 to 100, and the higher the value
is, the more easily the defocus image can trigger the alarm.

10.15 Sudden Scene Change

This function may not be available in each recorder model.
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.
Note:
 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).
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