2. CCTV
Closed-circuit television (CCTV), also known as video
surveillance, is the use of video cameras to transmit a
signal to a specific place, on a limited set of monitors.
The term is most often applied to those used for
surveillance in areas that may need monitoring such as
banks, casinos, airports, military installations, and
convenience stores
3. Uses and applications
1. Crime prevention
2. Industrial processes
3. Traffic monitoring
4. Transport safety
5. Control of retail
6. Use in schools
7. Criminal use
4. Retention, storage and preservation
Most CCTV systems may record and
store digital video and images to a
digital video recorder (DVR) or, in the
case of IP cameras, directly to a server,
either on-site or offsite
5. Types of Security Cameras
1. Bullet
2. Dome
3. Board / Desktop
4. Discreet
5. IrDA / Night vision
6. Varifocal
7. PTZ/Speed Domes
8. High-Definition Cameras
6. Bullet / Dome Camera
A bullet CCTV camera is a wall-mount or ceiling-
mounted unit that is typically designed for indoor use,
but can also be fill some outdoor applications. The
camera derives its name from its sleek, thin cylindrical
shape. Many bullet cameras also tout themselves as
being waterproof.
A dome cameras get their name from the dome-
shaped housing in which they sit. These housings are
designed to make the cameras unobtrusive… not
covert or hidden. Typical applications are retail, where
the camera is designed to be unobtrusive, but visible.
7. Board / Discreet Camera
Board cameras are well suited for desktop use for
Skype and other low-resolution teleconference
applications.
Discreet cameras are designed to disguise themselves
as another object, normally to avoid detection of
people for covert operation
8. Night Vision / Varifocal
Night-vision cameras have the ability to see images in
pitch black conditions using IR LEDs. In some cases
they are for mobile applications.
A camera with a varifocal lens allows the operator to
zoom in or out while still maintaining focus on the
image.
9. PTZ (Speed Dome) / HD Cam
Pan/tilt/zoom cameras give the surveillance operator
the ability to move the camera left or right (pan); up
and down (tilt); and zoom the lens closer or farther.
These are relegated to surveillance situations where
there is an actual live guard or surveillance specialist
monitoring the images.
Ultra high-definition cameras are often relegated to
niche markets, such as casinos. These give the
operators the ability to zoom in with extreme clarity
