|
| What sort of technology
is used in CCTV systems? |
|
|
The modern CCTV system involves a linked system of cameras with full
pan, tilt, and zoom able to be operated remotely from a control room.
These systems may involve sophisticated technology. Features can include
night vision, computer assisted operation, and motion detection facilities
which allows the operator to instruct the system to go on red alert
when anything moves in view of the cameras. Camera systems increasingly
employ bullet-proof casing, and automated self defense mechanisms
which - as with the Liverpool system - ensure that cameras under attack
are covered by neighboring cameras These can be legitimately described
as military style systems.
The clarity of the pictures is often excellent, with many systems
being able to recognize a cigarette packet at a hundred metres. The
systems can often work in pitch blackness, bringing images up to daylight
level. |
|
|
