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2. Avoid the scenes with many trees or the scenes with various light changes (like many
flashing headlights). The ambient brightness of the scenes shouldn’t be too low.
3. Cameras should be mounted at a height of 2.8 meters or above.
4. Keep the mounting angle of the camera at about 45°.
5. The detected objects should not be less than 1% of the entire image and the largest sizes
of the detected objects should not be more than 1/8 of the entire image.
6. Make sure cameras can view objects for at least 2 seconds in the detected area for
accurate detection.
7. Adequate light and clear scenery are crucial for line crossing detection.
4.5.4 Region Entrance
Region Entrance
: Alarms will be triggered if the target enters the pre-defined areas.
Go to Config
→
Event
→
Region Entrance interface as shown below.
1. Enable region entrance detection and select the snapshot type and the detection target.
Save Original Picture to SD Card
: If it is enabled, the detected original pictures will be
captured and saved to the SD card when the targets intrude into the pre-defined areas.
Save Target Picture to SD Card
: If it is enabled, the detected target cutout pictures will be
captured and saved to the SD card when the targets intrude into the pre-defined areas.
Note:
To save snapshots to the local PC, please e
nable “Local Smart Snapshot Storage”
in the local config interface first. To save snapshots to the SD card, please install an SD
card first.