Dahua 8-HDD Series, Quick Start Manual

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Intelligent Operation 54
shall not exceed 1/3 height and width of the image. It is suggested that target height
should be 10% of image height.
 Brightness difference of target and background shall not be less than 10 gray levels.

Ensure that the target appears in the field of view for over 2s, movement distance
exceeds target width and shall not be less than 15 pixels (CIF image).
 When conditions allow, try to reduce complexity of surveillance analysis scene. It is not
recommended to use IVS in the scene with gathered targets and frequent changes of
light.

Try to avoid glass, reflection of light on the ground and water; try to avoid tree branches,
shadows and areas with mosquito; try to avoid backlight and direct light.
6.4.1 Setting
Set IVS. See Figure 6-47.
Enable AI plan when AI by camera is used.
IVS flow Figure 6-47
6.4.2 IVS
Set alarm rule of IVS.

The system supports AI by camera and AI by device. When both are enabled, the system
selects AI by device first.
 For example, set AI by device.
Click , or click on Setting interface, and then select Event . Step 1
The Event interface is displayed.
Select remote device in the device tree in the left. Step 2
Select AI Plan > IVS Rule . Step 3
The IVS Rule interface is displayed.
Click AI by device . Step 4
The AI by device interface is displayed. See Figure 6-48.