Dahua Technology NVR2104/2108HS-W-4KS2 1U, Руководство пользователя

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Table of Contents 186
Parameter Description
Voice
Prompts
Check the box and then select the corresponding audio file from the dropdown
list. System plays the audio file when the alarm occurs.
Refer to
"
4.17.1 File Manage
"
to add audio file first.
Buzzer Select the check box to activate the buzzer when an alarm occurs.
Step 9 Click OK , system goes back to human face recognition interface.
Step 10 Click Apply to complete the settings.
The interface is shown as Figure 4-126 if there is matched result.
Figure 4-126
4.7.2.4 IVS (General Behavior Analytics)
The IVS function processes and analyzes the images to extract the key information to match
with the specified rules. When the detected behaviors match with the rules, the system activates
alarms.

This function is for some series product only.

IVS function and human face detection function cannot be valid at the same time.
The IVS function environment shall meet the following requirements:

The object total size shall not be more than 10% of the whole video.

The object size on the video shall not be more than 10pixels*10 pixels. The abandoned
object size shall be more than 15pixels*15 pixels (CIF resolution). The object width shall not
be more than 1/3 of the video height and width. The recommended height is 10% of the
video.

The object and the background brightness different shall be more than 10 grey levels.

The object shall remain on the video for more than 2 seconds. The moving distance is larger
than its own width and shall not be smaller than 15pixels (CIF resolution).