57
Figure 3.4-17 Crowd Gathering Estimation
Step 2
, Click
to draw rules in the monitoring image.
Step 3
, Configure parameter info according to the actual needs. Please refer to Table 3.4-13 for more details.
Parameter
Description
Keep Time
Set the shortest time from crowd gathering to trigger alarm.
Sensitivity
Set the trigger sensitivity, the value range is from 1 to 10, default is 5.
Min Gathering Area
Click
to set the Crowd Gathering area model. When the Crowd
Gathering area is larger than the area model, and longer than keep time, trigger alarm.
Click
to clear all area model.
Table 3.4-13 Crowd Gathering Estimation Parameter Description
Please refer to “
” for more details about other parameters.
Step 4
, Click
to complete config.
3.4.3.1.8 Missing Object
It means it will trigger alarm after the target in the scene is taken and exceeds a certain period of time.
The system will make statistics for the still areas in the foreground area, and distinguish whether it is missing
object or abandoned object according to the similarity between foreground and background, it will trigger alarm
when it exceeds the time set by users.
Application scene:
It can be applied to the scene where the target sparse and there is no obvious and frequent
light change. As for the scene with high target density and frequent blocking, alarm leakage will increase; as for
the scene with more people to stay, false alarm will increase. As for the detection area, it is required to be simple;
it can’t be applied to complicated areas.
The config steps are shown as follows:
Step 1
,
Select rule type as “Missing Object” and the config interface is shown in Figure 3.4-18:
