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 Application Overview
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An Internet protocol camera, or IP camera, is a type of digital video camera employed for surveillance, and which unlike analog closed circuit television (CCTV) cameras can send and receive data via a computer network and the Internet. Although most cameras that do this are webcams, the term "IP camera" is usually applied only to those used for surveillance. |
There are two kinds of IP cameras:
- Centralized IP cameras, which require a central Network Video Recorder (NVR) to handle the recording, video and alarm management.
- Decentralized IP cameras, do not require a central Network Video Recorder (NVR), as the cameras have recording functionality built-in and can thus record directly to digital storage media, such as flash drives, hard disk drives or network attached storage.
Several types of network cameras are used in video surveillance systems, depending on the specifics of their implementation. The most traditional type cameras are wall mountable with fixed angle of the image. When installing outdoors, surveillance IP cameras may be installed in housing and thus be protected from adverse weather effects. Static constraints of this type of network cameras can be overcome with the use of PTZ (Pan, Tilt and Zoom) cameras for moving objects or vehicles. As evidenced by their name, the camera can operate in standby view, tilt and zoom manually or automatically. Movements are guided by an operator monitoring video images of control room. Dome PTZ cameras are another type used in video surveillance systems. Extensive territory is in their cover, thanks to greater flexibility in work arrangements in view, tilt and zoom. Unlike other PTZ cameras, PTZ dome camera allows 360 degrees pan and tilt 180 degrees while moving automatically between predefined positions. This kind of cameras are mounted on a ceiling - where conditions indoors, or on a pillar or corner - when used outdoors.
Variety of such models are PTZ cameras with electronic realization of the movement in which the operator can choose view mode, zoom in or slope without the need for the camera itself to move. Immediate movement and change of image is an advantage, compared to mechanical PTZ cameras in which the transfer takes a period of about one seconds. |
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 Benefits
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Two-way audio.
Two-way audio via a single network cable allows users to communicate with what they are seeing (e.g. gas station clerk assisting a customer on how to use the prepay pumps).
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Higher image resolution.
IP cameras have a resolution of at least 640x480 and can provide multi-megapixel resolution and HDTV image quality at 30 frames per second.
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Flexibility.
IP cameras can be moved around anywhere on an IP network (including wireless).
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Distributed intelligence.
with IP cameras, video analytics can be placed in the camera itself allowing scalability in analytics solutions.
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Transmission of commands.
Transmission of commands for PTZ (pan, tilt, zoom) cameras via a single network cable.
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Encryption & authentication.
IP cameras offer secure data transmission through encryption and authentication methods such as WEP, WPA, WPA2, TKIP, and AES.
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Remote accessibility.
live video from selected cameras can be viewed from any computer, anywhere, and also from many mobile Smartphone’s and other devices.
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Cost-advantage for larger systems.
Cost-advantage for larger systems. Studies show that for systems with less than 16 cameras, analog technology is cheaper, between 16 and 32 they are equal, and beyond 32 cameras, IP-based systems are more cost-effective.
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IP cameras are able to function on a wireless network.
IP cameras are able to function on a wireless network. Initial configuration has to be done through a router; after the IP camera is installed it can then be used on the wireless network these cameras are used in navigation purpose in defense forces.
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PoE - Power over Ethernet.
Modern IP cameras have the ability to operate without an additional power supply. They can work with the PoE-protocol which gives power via the Ethernet-cable.
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 Market Use
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The high quality resolution, easy installation and feature of remort monitoring makes it a important tool of security from any location be it Condominium, Factory, Hospital, Office Building, Municipal Property or even place which needs security. |
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 Case Study
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