ISSUE 1.09-4 VCA Alarm2. Select the camera to configure the VCA.Check the Save VCA Picture checkbox to save the captured pictures of the VCAdetection.3. Select VCA Line Crossing Detection as the detection type.4. Check the Enable checkbox to enable this function.5. Click to configure the trigger channel, arming schedule and linkage actions forthe line crossing detection alarm.6. Click the Rule Settings button to set the 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 theconfigured 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 sidewill be detected.B->A: Only the object crossing the configured line from the B side to the A sidewill 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 detectionalarm is triggered.6c. Click OK to save the rule settings and return to the line Crossing Detectionsettings screen.7. Click and set two points in the preview window to draw a virtual line. (Refer toFigure 9-4 Draw Line for Line Crossing Detection on page 9-3.)You can use the to clear the existing virtual line and redraw it.8. Click Apply to activate the settings.Figure 9-5 Set Line Crossing Detection RulesNOTE A maximum of four rules can be configured.
