Figure 9-4 Draw Line For Line Crossing Detection; Figure 9-5 Set Line Crossing Detection Rules - NEC NRS Expanded Series Configuration Manual

ISSUE 1.0
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9-4
Select the camera to configure the VCA.
Check the Save VCA Picture checkbox to save the captured pictures of the VCA
detection.
Select VCA Line Crossing Detection as the detection type.
Check the Enable checkbox to enable this function.
Click to configure the trigger channel, arming schedule and linkage actions for
the line crossing detection alarm.
Click the Rule Settings button to set the line crossing detection rules.

Figure 9-5 Set Line Crossing Detection Rules

6a. Select the direction to A<->B, A->B or A<-B.
A<->B: Only the arrow on the B side shows. When an object going across the
configured line with both directions is detected; alarms are triggered.
A->B: Only the object crossing the configured line from the A side to the B side
will be detected.
B->A: Only the object crossing the configured line from the B side to the A side
will be detected.
6b. Click and drag the slider to set the detection sensitivity.
Sensitivity: Range [1-100]. The higher the value, the more easily the detection
alarm is triggered.
6c. Click OK to save the rule settings and return to the line Crossing Detection
settings screen.
Click and set two points in the preview window to draw a virtual line. (Refer to
Figure 9-4 Draw Line for Line Crossing Detection on page
You can use the to clear the existing virtual line and redraw it.
A maximum of four rules can be configured.
NOTE
Click Apply to activate the settings.
9-3.)
VCA Alarm