Dahua Technology IVS-TB8000-xE-GU2 Handleiding (96 Pagina's)

Handleiding

User’s Manual

26

4.3.3 Configuring Calibration

Calibration is for speed measurement in speed detection events. Draw a quadrilateral on the

real-time video image, which corresponds to a rectangle in the actual scene. Set the length of the

rectangle, and then detect the passing time of the vehicle to calculate the speed of the vehicle that is

travelling in. If you select the Smoke and Fire Detection plan, then no configuration is required.

Preconditions

Make sure the smart plan has been enabled. See "4.3.1 Enabling Smart Plans".

Background Information

 To ensure that the length of the calibration quadrilateral corresponds to the length in the actual

scene, we recommend you to follow the order of "upper-left > lower-left> lower-right>

upper-right" when drawing the quadrilateral.

 We recommend that the left and right sides of the quadrilateral along the lane line to make the

drawing as accurate as possible. The vertical line should fit the lane line or the actual road edge

line. The horizontal line can be drawn with reference to a horizontal object.

 The quadrilateral should be as large as possible to reduce the chances of calibration errors being

produced. It should be drawn according to the actual length that needs to be calibrated,

including most of the road surface in the picture.

 Do not include parts of the road surface that are too far away from the detection zone of the

camera. The size should be determined according to the field of view of the camera.

Procedures

Click Region and then draw a calibration region on the left.

Move your mouse to the starting position of the calibration region on the left of the image,

and then click to draw. Right-click the unclosed region, and the system will automatically

close the region to complete drawing.

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