Hikvision Fixed Under Vehicle Surveillance System User Manual
29
Chapter 4 FAQ
Question
Answer
The license plate No. is shown
unrecognized in the software.
1.
The vehicle has no license plate, or the license plate is
covered.
2.
If you can see the license plate from the vehicle body
image, then it is the capture camera that fails to
recognize the license plate. In video detection mode, the
recognition rate of capture camera is around 98%.
The license plate is cropped
incorrectly from the captured
image, but the license plate No.
can be seen.
It is a normal phenomenon. It is possible for the license plate
to be cropped from the wrong position of the captured
image.
The detected vehicle
undercarriage image and the
captured images of vehicle body
and license plate do not match.
It is caused by mixed results of two vehicles. If a vehicle
enters the detection area before the detection result of the
last vehicle is generated, the images of the two vehicles
might be mixed up, leading to a mismatch between detected
under vehicle images and captured images of vehicle body
and license plate. To avoid such errors, you need to control
the distance between two vehicles at the customs pass. If the
under vehicle detection system is triggered by inductive
loops, you also need to prevent electronic mobiles and large
metals from entering the inductive area to avoid false
triggering.
The vehicle undercarriage image
is incomplete or distorted.
It is likely that the vehicle drove away from the detection
area during scanning. To get a normal vehicle undercarriage
image, vehicles need to pass the detection area straightly at
a speed within the supported range.
Login to the capture camera fails. Check IP address, port, user name, and password of the
capture camera. If you enter passwords wrongly for many
times, the capture camera will be locked and login will be
forbidden. You can login to the device on IE browser and
then restart it to solve the problem.
