Adaptive Recognition Carmen ANPR BOX, Инструкция по установке и эксплуатации

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Carmen Box USER MANUAL
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Adaptive Recognition America
Adaptive Recognition Hungary
Adaptive Recognition Nordic
Adaptive Recognition Singapore
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5. Fine-tuning
Besides checking everything in the Settings menu, there are a few settings that, in addition to
the above, are particularly recommended to check/fine-tune to achieve above-average license
plate recognition accuracy.
a. Set your camera image setting parameters to as perfect as possible for ANPR. Take
into account the location you are observing and, most importantly, make sure the li-
cense plates are legible. Check the good visibility of the license plates for a few days
after the camera installation, during the day, night and sunrise/sunset times of the day.
Repeat the process later to adjust for the different seasonal changes.
b. Check the resolution/FOV of your camera. The pixel size of the license plate characters’
has to be in the mentioned range (min. 25 pixels). You may need to increase the
bandwidth of the video stream if the characters cannot be seen well.
c. Check the settings of the ANPR engine {ANPR engine} . Lowering the minimum confi-
dence parameter will increase the chance of misreading license plates but will also
reduce the probability of missing an unrecognized plate.
d. Set the country where the device is installed so that in the case of a type/country code
engine, you increase the priority of the license plate numbers of that country {
ANPR
engine}.
e. Draw the area on the picture where you expect to see license plates - with the proper
character size, and from the proper angle of view - using a mask. This will increase the
possibility of speeding up the license plate recognition, and cars parked/passing by in
an undesirable place will not trigger an event.
{ANPR engine} .
f. During the setup, testing and checking of the operation, it is recommended to display
the necessary OSD layer(s) to get technical feedback about the internal operation of
the device, changes of device
’s parameters, etc. We suggest displaying at least the
General/ANPR engine status layer during device setup {Overlay} . Also, display these
captions during playback and reduce the playback speed to facilitate more accurate
evaluation.