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Symphony Server
With Automatic License Plate Recognition, a 720p network camera can analyze up to two lanes of
traffic if the license plate images are at least 32 pixels in height for Latin characters or 40 pixels in
height for non-Latin characters.
Typical uses for Automatic License Plate Recognition include:
• Toll collection in parking garages
• Traffic control
• Border crossings
• Pattern of use analysis
Configure Automatic License Plate Recognition
Configure the Automatic License Plate Recognition video analytic for each camera that runs the
video analytic.
1.
In the Symphony server configuration interface, click
Devices
>
Cameras
.
2.
Select the camera on which you want to run Automatic License Plate Recognition and click
Edit
.
3.
In the
Add-Ons
section, click the button beside Automatic License Plate Recognition to turn it
on.
4.
Click the
Configure
button beside Automatic License Plate Recognition.
5.
In the
Overview
section, configure analysis options and select whether the advanced options
are hidden (simple mode on) or visible (simple mode off).
6.
If the image in the
Processing Mask
and
Plate Detection
sections do not include an image that
is suitable for license plate detection, update the image.
a) Click
Change Image
.
b) In the Web Access interface, use the timeline and video controls to navigate to an image
that is suitable for license plate detection.
c) Click
Select
.
7.
In the
Processing Mask
image, define the areas that the video analytic analyzes and ignores.
a) In the
Drawing Mode
list, select whether to draw an area to analyze or ignore.
b) Using the
Size
slider, select the size of drawing circle.
c) On the image, click and drag the drawing circle to define the areas to analyze or ignore.
8.
In the
Plate Detection
image, draw a frame around the license plate so that the edges of the
text on the license plate fall within the green frame.
a) Click and drag the frame on the image.
b) To move the frame, click in the middle of the green frame and drag the frame.
c) To change the size of the frame, click an edge of the frame and drag the line to change the
size.
d) To adjust the slant and slope of the frame, click a corner of the frame and drag the corner
to change the slant or slope.
9.
Using the
Reporting Confidence
slider, select how sensitive the video analytic is to potential
license plates.
10. Click
OK
.
Senstar Symphony User Guide
61