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CCTV is Closed-circuit television.
It is the use of video cameras to transmit a signal
to a specific, limited set of monitors. It differs from
the broadcast television in that the signal is not openly
transmitted, though it may employ point to point wireless
links. In present days the companies and organizations
have become more conscious about their security so the
surveillance systems have gained a massive importance.
CCTVs, Digital cameras and IP interfaces are being used
for longer retention periods at higher resolution. Many
organizations today want to shore up the safety and
security of their employees, visitors and students.
They also want to secure their premises and assets so
seeks for innovative, affordable alternatives that deliver
rapid and appropriate responses to crimes or emergencies
that may arise. |
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CCTV is used for surveillance in
areas which need security, such as banks, casinos, and
airports or military installations. The increasingly
use of CCTV in public places has caused debate over
public security versus privacy. Even in industrial plants,
CCTV equipment may be used to observe parts of a process
that are remote from a control room. CCTV systems may
operate continuously or only as required to monitor
a particular event. |
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The first CCTV cameras used in
public spaces were crude, conspicuous, low definition
black and white systems without the ability to zoom
or pan. But the modern CCTV cameras use small high definition
colour cameras that can not only focus to resolve minute
detail, but by linking the control of the cameras to
a computer, objects can be tracked semi-automatically.
The implementation of automatic number plate recognition
produces a potential source of information on the location
of persons or groups. |
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Suraj informatics manufactures
better resolution CCTVs that can track movement across
a scene where there should be no movement, or they can
lock onto a single object in a busy environment and
follow it. Being computerized, this tracking process
can also work between the cameras. The company’s
combination of CCTV and facial recognition has been
tried as a form of mass surveillance. This type of system
has been proposed to compare faces at airports and seaports
with those of suspected terrorists or other undesirable
entrants. The CCTV systems of the company can check
many thousands of faces in a database in under a second.
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