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Outdoor Network Camera with
Number Plate Recognition
These instructions are intended for installers
of video surveillance systems Please read
the instructions carefully prior to installa-
tion and keep them for later reference
1 Applications
The camera INC-2722BCP is specially
designed for video surveillance systems
based on computer networks Its housing
is weatherproof (IP 67); therefore, the cam-
era is also suited for outdoor applications
It is equipped with a motorized zoom lens
The camera features include mirror image,
masking of image areas, motion detection
and, as a special feature, number plate
recognition In the dark, the integrated IR
LEDs will illuminate a surveillance zone of
up to 70 m and the camera will switch to
B/ W mode The camera is provided with
an integrated web server with 2-way
video streaming For correct configura-
tion, knowledge of network technology is
indispensable
The camera can be operated in combi-
nation with a network video recorder (e g
NWR-...*) or operated independently via a
web browser It is equipped with an audio
input and an audio output so that mutual
communication via a computer will be
possible The camera also offers an alarm
input This input can be used, for example,
to start recordings or to send e-mail mes-
sages A slot for memory cards allows you
to make video recordings in the camera
according to schedule or triggered by
alarm
*Hint: If this camera model does not appear on the
list of the recorder used, select the ONVIF
protocol
1.1 Number plate recognition
The camera INC-2722BCP features au-
tomatic number plate recognition: The
number plates detected can be checked
against lists of number plates If there is a
match, it is possible to trigger actions such
as switching a relay via the switching out-
put, sending e-mail messages or saving a
snapshot via FTP Additional software is not
required; the corresponding lists are saved
to the camera This feature can be used,
for example, for access control to car parks
12
2 Important Notes
The camera corresponds to all relevant
directives of the EU and is therefore marked
with
• Protect the camera against extreme tem-
peratures (admissible ambient tempera-
ture range: −30 °C to +60 °C)
• Never use aggressive detergents or
chemicals when cleaning the camera
housing For cleaning the lens, use a soft
cloth moistened with isopropyl alcohol or
optical lens cleaner
• No guarantee claims for the camera
and no liability for any resulting person-
al damage or material damage will be
accepted if the camera is used for other
purposes than originally intended, if it
is not correctly connected or operated,
or if it is not repaired in an expert way
Likewise, no liability will be accepted for
any data loss due to operating errors or a
defect or for any consequential damage
caused by this data loss
If the camera is to be put out of op-
eration definitively, take it to a local
recycling plant for a disposal which
is not harmful to the environment
3 Installation
When selecting the mounting location,
certain requirements must be met to
ensure optimum conditions for number
plate recognition
The number plate should be as straight
as possible to the camera view; however,
slight deviations (±5°) are acceptable
④
For the best detection accuracy, the hori-
zontal (fig 5) and vertical (fig 6) viewing
angles of the camera to the number plate
to be captured must not deviate by more
than 30° from the perpendicular
d
≤ 30°
⑤
h
d
≤ 30°
⑥
For the mounting height, for example, this
means that the distance (d) must be at least
17 times the mounting height
When the camera is too far away, the
size of the number plates will fall below
the minimum size required for recognition
For single-line number plates, a minimum
width of 130 – 150 pixels is required (de-
pending on the country) which corresponds
to approximately 7 – 8 % of the image
width at full resolution To magnify the
number plates, they can be zoomed in via
the lens (
☞
chapter 62)
≤ 5°
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