Dahua Technology WizSense IPC-HFW3441E-SA Operation Manual page 169

Calibration Purpose
Determine corresponding relationship between 2D image captured by the camera and 3D actual
object according to one horizontal ruler and three vertical rulers calibrated by the user and the
corresponding actual distance.
Notes
When drawing calibration ruler, keep the ruler length consistent with the actual length of the object.
Procedure
1. Select Setting > Event > Crowd Map > Global Setup
2. Set calibration area and ruler.
a. Click Add Calibration Area and draw a calibration area in the image.
b. Select a calibration type and enter the actual length, and then click Add Rulers.
c. Draw one horizontal ruler and three vertical rulers in the calibration area.
3. Click Save.
5.9.2 Rule Configuration
When the number of people or the crowd density in the detection area exceeds the configured
threshold, the system performs alarm linkages.
Prerequisites
● Select Setting > Event > Smart Plan, and enable Crowd Map.
● Select Setting > Event > Crowd Map > Global Setup to configure the crowd map.
Figure 5-30 Global setup of crowd map
156
Operation Manual