59
Figure 3.4-19 Loitering Detection
Step 2
, Click
to draw rules in the monitoring image.
Step 3
, Configure parameter info according to the actual needs. Please refer to Table 3.4-15 for more details.
Parameter
Description
Keep Time
Set the shortest time from object disappears to trigger alarm.
Table 3.4-15 Loitering Detection Parameter Description
Please refer to “
” for more details about other parameters.
Step 4
, Click
to complete config.
3.4.3.2 Global Setup
The purpose and principle of the calibration of depth of field:
According to the calibrated of 1 horizontal line and 3 vertical lines, and the actual distance in the
corresponding actual environment, to estimate the Internal Parameters (Geometric properties and Optical
properties) and External Parameters (The 3D position and direction of the camera relative to the actual
environmental coordinate system.) of the camera, and then determine the corresponding relationship between
the 2D images obtained by the camera and the 3D real objects.
The configuration method and notice of the calibration of depth of field:
●
A
pplication Scene
: it is better to choose the scene that camera is installed more than 3m above. It doesn't
support the scene which angle is too flat and ceiling mount installing.
Only support calibrate on horizontal plane, which cannot support on vertical wall or Inclined plane.
Can not support the special scene, super wide angle camera and fisheye camera scene.
●
Calibration Area
Setting, the area must be in the same horizontal plane.
The config steps are shown as follows:
Step 1
,
Select “Setup > Event > IVS > Global Setup”. The system will display the interface of “Global Setup”, which is
shown in Figure 3.4-20:
