Region Entrance - Speco O4DM User Manual

2. Set "Refresh Frequency", "Density Alarm Threshold" and "Alarm Holding Time".
Refresh Frequency: The refresh frequency of the detection result.
Density Alarm Threshold: Alarms will be triggered once the percentage of the crowd density in a specified area exceeds the
pre-defined threshold value.
3. Set alarm trigger options. The setup steps are the same as motion detection. Please refer to motion detection section for details.
4. Set an alarm area for the crowd density detection. Click the "Area" tab as shown below.
Click "Draw Area" and drag the mouse to draw a rectangle area. Drag the border lines of the rectangle to modify its size and move
the rectangle to change its position. Click "Stop Draw" to stop drawing the area. Click "Clear" to clear the area.
5. Set the schedule of the crowd density detection. The setup steps of the schedule are the same as schedule recording setup (See
Schedule Recording).
Note: The camera only can roughly calculate the crowd density through detecting the human faces. The head or back of the person
detected is not counted.
* Configuration of camera and surrounding area
1. The camera lens should face to the people flow. The direction of the people flow is allowed to deviate slightly from the direction
of the camera lens (The angle (a) shall be less than 45°). It is recommended that the angle between the lens of the camera and the
floor (b) shall range from 30° to 60°.
2. The size range of a single person image should take up from 1% to 5% of the entire image and the height range of a single person
image should occupy from 1/5 to 1/2 of the entire image.
3. This function is inapplicable to the scene where there are many moving objects except human shape. (eg. moving cars)
4. A lot of trees and billboards will affect the detection results in the detected area.

6.2.7 Region Entrance

Region Entrance: Alarms will be triggered if the target enters the pre-defined areas.
Go to ConfigEventRegion Entrance interface.
1. Enable region entrance detection and select the snapshot type and the detection target.
2. Set the alarm holding time and alarm trigger options.
3. Set the alarm area of the region entrance detection.
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