Ai Search (Face & Body Detection); Face Recognition - Dahua NVR21-4KS3 Series User Manual

Step 2 Select a channel, and then click
Enable Face & Body Image Enhancement to improve detection efficiency.
Step 3
Step 4 Configure target filters.
You can configure two target filters (maximum size and minimum size). The system
triggers an alarm when the size of detected target is between the maximum size and the
minimum size.
Step 5 Click Setting next to Schedule to configure the arming period.
The system triggers corresponding alarm actions only during the arming period.
● On the time line, drag to set the period.
● You can also click
Step 6 Configure alarm linkage actions. For details, see Step7.
Step 7 Click Apply.
5.9.5.3 AI Search (Face & Body Detection)
To search for face detection results, see "5.9.4.3 AI Search (Face Detection)". To search for body
detection results, see "5.9.9.3.1 Human Detection".

5.9.6 Face Recognition

The system compares the detected faces with the faces in the database to judge whether the
detected face belongs to the database. When the similarity reaches the defined threshold, an alarm
is triggered.
Figure 5-117 Face and body detection
to enable the function.
to set the period.
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User's Manual