NST HK-HDVR8-3, Руководство пользователя

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Digital Video Recorder User Manual
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l The Threshold[5s-20s] in the Rule Settings defines the time of the objects left over in the region. If you set
the value as 10, alarm is triggered after the object is left and stay in the region for 10s. And the Sensitivity
defines the similarity degree of the background image. Usually, when the sensitivity is high, a very small
object left in the region can trigger the alarm.
l Up to 4 rules can be configured.
10.12 Object Removal Detection
Purpose:
Object removal detection function detects the objects removed from the pre-defined region, such as the exhibits
on di
l Please refer to the Chapter 9.4 Intrusion Detection for operating steps to configure the object removal
detection.
l The Threshold [5s-20s] in the Rule Settings defines the time of the objects removed from the region. If you
set the value as 10, alarm is triggered after the object disappears from the region for 10s. And the
Sensitivity defines the similarity degree of the background image. Usually, when the sensitivity is high, a
very small object taken from the region can trigger the alarm.
l Up to 4 rules can be configured.
10.13 Audio Exception Detection
Purpose:
Audio exception detection function detects the abnormal sounds in the surveillance scene, such as the sudden
increase/decrease of the sound intensity, and some certain actions can be taken when the alarm is triggered.
The audio exception detection is supported by all analog channels.
Steps:
1. Enter the VCA settings interface.
Menu> Camera> VCA
2. Select the camera to configure the VCA.
You can click the checkbox of Save VCA Picture to save the captured pictures of VCA detection.
3. Select the VCA detection type to Audio Exception Detection.
4. Click to configure the trigger channel, arming schedule and linkage action for the face detection
alarm.
5. Click the Rule Settings button to set the audio exception rules.
Figure 10. 4 Set Audio Exception Detection Rules