User's Manual

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3E A Line Cross Detection
The line cross detection function is used to detect whether there is an object in the video
that crosses the set warning surface, and the alarm is linked according to the judgment
result. The specific steps are as follows:
Step 1: In the main interface click on the "Configuration → Events → Smart Event →
Line Cross Detection" to enter the Line Cross Detection settings interface, as shown in
Figure 8-51.
Figure 8-51
Step 2: Check "Enable" to enable intrusion detection.
Step 3: Select "Warn Line": The system supports setting up to 4 warn lines. After selecting
a warn line, you need to make the following settings. After setting, please click "Save"
below.
【
Warn Line
】
Click “Drawing Area” and a line segment with an arrow will appear on
the screen. Click on the line segment. Click and drag one of the endpoints to modify the
length of the line segment or click and drag the position of the line segment with the arrow
in the picture to complete the drawing of a warning surface.
【
Clear All
】
Used to delete the selected alert area.
【
Direction
】
There are three options: “A<->B”, “A->B”, and “B->A”, indicating the
direction in which the object crosses the interface to trigger an alarm. “A->B” means that