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DS-2TD2xxx-xxxx/xx Thermal and Optical Bi-Spectrum Network Camera User Manual
UM DS-2TD2xx-xxxx/xx Thermal 072020NA 25
5.4 Set Rules
The device can detect if a target breaks a VCA rule. The optical camera will track the target or the device
will alarm when the VCA rule is triggered.
1. Go to Configuration → VCA → Rule.
2. Click to add a new rule.
3. Enter the rule name, and click the drop-down menu to select Rule Type.
Each scene can be configured with different rule types. Up to eight rules can be set for
one scene.
• Line Crossing: If a target moves across the setting line, an alarm will be triggered. You can set the
crossing direction.
• Intrusion: If a target intrudes into the pre-defined region longer than the set duration, the alarm
will be triggered.
• Region Entrance: If a target enters the pre-defined region, the alarm will be triggered.
• Region Exiting: If a target exits the pre-defined region, the alarm will be triggered.
4. Set rule parameters.
• Sensitivity: The higher the value, the easier the alarm will be triggered.
• Detection Target: It is recommended to select the target as Human & Vehicle. In distant view, the
device cannot classify the target with pixels less than 10*10. The target will be recognized as
human directly, so the selection of this item will not trigger a false or missing alarm.
• Background Interference Suppression: Eliminate the environment interference to reduce false
alarms. For example, the wind blowing grass.
5. Draw the rules.
• When the rule type is set to Line Crossing, click to draw a line in live view. You can drag
endpoints of the line to adjust the position and length.
- Line Crossing: You can set the crossing direction. Bidirectional, A-to-B, or B-to-A are
selectable.
• When the rule type is selected as Intrusion, Region Entrance, Region Entrance, click to draw an
area in live view. Right click the mouse to finish drawing.
- Duration: The device performs behavior analysis when the target stays in the detection area for
more than the setting value.
Draw three segments of the rule from near to far to cover all of the detection area.
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