Welcome to Security Camera Integration Wiki


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. It differs from broadcast television in that the signal is not openly transmitted, though it may employ point to point (P2P), point to multipoint, or mesh wireless links. Though almost all video cameras fit this definition, 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. videotelephony is seldom called "CCTV" but the use of video in distance education, where it is an important tool, is often so called.

In industrial plants, CCTV equipment may be used to observe parts of a process from a central control room, for example when the environment is not suitable for humans. CCTV systems may operate continuously or only as required to monitor a particular event. A more advanced form of CCTV, utilizing digital video recorders (DVRs), provides recording for possibly many years, with a variety of quality and performance options and extra features (such as motion detection and email alerts). More recently, decentralized IP cameras, some equipped with megapixel sensors, support recording directly to network-attached storage devices, or internal flash for completely stand-alone operation. Surveillance of the public using CCTV is particularly common in many areas around the world. In recent years, the use of body worn video cameras has been introduced as a new form of Surveillance.

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What's the Difference between "Interlaced" and "Progressive" Video?

In interlaced video, each field of a video image displays every other horizontal line of the complete image. The main benefit of interlaced video is that it allows more detailed images to be created than would otherwise be possible within a given amount of bandwidth -- in effect, interlacing allows a doubling of image resolution. Progressive video, on the other hand, is made up of consecutively displayed video frames that contain all of the horizontal lines that make up the image being shown. As a result, images appear smoother, fast-motion sequences are sharper and artifacts are much less prevalent. NRSEC can help determine the correct recording format for your companies bandwidth.

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