ipConfigure ESM 5.1
LPR Setup and Field Installation Guide
20
The Typical coordinates of Plate in Image:
These settings will mirror the settings you end up with after using the Thick client
tool to find the ideal settings based on the environment. This will be the
coordinates displayed within the application mentioned in the above section.
The License Plate Recognition Settings:
Motion Skew = 0 is the only setting it should be set at.
Image Enhancement = 31 is the only setting it should be at.
Sensitivity = 125 is the only setting it should be set at.
Overview Camera = This should be an exterior camera at the facility, that is not
an LPR dedicated camera. Currently all Overview Cameras are Axis 211M
models. These do the video recording on a wider view. This will need to be set
manually on this page. All other settings can hardcode from the camera with the
LPR Console tool.
SERVER UPDATES
What is going to be updated on the RLS boxes?
• LPRGateway.dll
• SQL Table Row Add and Schema Change.
Plate templates for font sets for the area or State that you are in acts as the
determining factor in the success of the OCR Engine. These reside in
C:\Program Files\ipConfigure\LPRConfig\*.* If we were configuring for south
Texas, we would see 10 or so files with texas.* in the folder.
LENS DATA
We will use a single part number for this lens currently. It will always be a
Fujinon F1.4 8/80mm lens – manufacturer part number – DV10-x8SA-SA1.
From our testing this lens will create good pixel counts when properly adjusted
for FOV from ranges 50 to 150 feet.
ENVIRONMENTAL CONSIDERATIONS
Dusk certainly presents issues and it seems to come in about 5 minute clips.
Once you get the settings working with the current available light and the OCR
engine is reading good data, wait 5 minutes, the accuracy will go down. This sort
of manual tweaking is not really worth the 5 extra minutes per day of valid plate
data that would be obtained. Not to mention you can interrupt normal daytime
operations if you start to mess with Max Shutter Speeds and Exposure values to
increase the light of the image.
What sort of lighting is notice for the environment?
There may be some image quality issues around the thermal off the ground,
especially in Texas on hot days where blacktop is present. This can be noticed
in the images if they seem wavy and rigid when zoomed in on them. Due to the
height at which we hang the cameras off the side of the building, this should
dissipate from our view. We saw it when the camera was about 3 feet off the
ground, it disappeared when moving the camera to 10 feet and higher.
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