Palak Gupta

A closed-circuit television (CCTV) system consists of a camera, lens, monitor and recorder. The camera/cameras pick up the images, which are transmitted to a recording device and then to a monitor. CCTV systems have many components with a variety of functions: including cameras, lenses, data distribution and power.

CISF personnel stand on guard at Delhi airport

CCTV technologies are refined on continual basis so as to improve performance in areas such as digital equipment options, data storage, component miniaturisation, wireless communications and automated image analysis.

Types and Their Uses

Surveillance cameras can be effectively used for crime control and its prevention. Law enforcement agencies and criminal justice system can benefit from public surveillance technology in areas of real-time arrest, interrogation/investigation, evidence accumulation, prosecution, emergency response situations, virtual guarding among others.

Poor quality footage fails the aforementioned purposes; hence it is imperative to invest in functional and high-quality cameras. The two main categories of analog CCTV cameras are fixed cameras and pan/tilt/zoom models which can rotate horizontally and vertically to cover more area. There’s a wireless CCTV too.

Internet Cameras and Images

Internet Protocol camera, or IP camera, which is a type of digital video camera, receives control data and sends image data via the internet. It is commonly used for surveillance and requires no local recording device except a local area network. In order to transfer the images, it requires nothing more than a network connection. The images captured by an IP camera may be viewed from anywhere in th