Video Surveillance Systems

There are eyes everywhere, and they do not belong to man. The rapid pace of today's modern world, video surveillance has become as essential to society as security guards and gateways. Mention video surveillance and the average Joe instantly associate the term with video cameras mounted in banks and department stores or videotapes of a lost spouse, as Exhibit A in a difficult divorce proceedings.

The history of video surveillance is as complex as the system behind him. In fact, it goes back much further in time than most of us realize. Press reports indicate that since 1965, police in the United States have resorted to video surveillance in public places. In 1969, police cameras were installed in strategic areas of the city of New York City building. This set a strong precedent, and it was not long before the practice spread to other cities and police officers continue to monitor closely in key areas, the use of video surveillance or CCTV , systems.

Analog debut
Videotapes are largely responsible for the popularization of video surveillance. The technology used to record analog video tapes makers gave unprecedented insight: it is possible to preserve evidence on the tape.

In 1975, England installed video surveillance systems in four of its major metro stations. At the same time, they have also begun to monitor traffic on main roads. The United States followed suit in the 1980s, and if it had not been as rapid as in England the use of CCTV, he made up for lost time by establishing a large CCTV systems in public places.

The changing digital multiplexing and subsequently
A disadvantage of analog technology is that users had to change tapes daily. This has been corrected in the 1990s with the introduction of digital multiplexing. digital multiplexer units features like time-lapse and motion recording only, which saved a lot of space band. In addition, it has permitted simultaneous recording on multiple cameras.

The next class, scanning, presented compression capability and low cost, allowing users to record equivalent to one month of surveillance video on the hard disk. In addition, the video images are clearer and have allowed the manipulation of images to improve clarity.

9 / 11 and Internet
The events of September 11, 2001 have changed the public perception of video surveillance. Software developers create programs that improve video surveillance. facial recognition programs is one of those programs. Using the key points of the face features and faces are registered compared to photographs of terrorists and criminals.

In May 2002, facial recognition software has been installed on the computer of the video surveillance cameras at Ellis Island and the Statue of Liberty. That same year, SmartGate has been installed at Sydney International Airport in Australia. SmartGate is an automated border crossing system for flight crew members. The system scans the faces of crew members, compared to passport photos, and confirms the identity of less than ten seconds.

In December 2003, the Royal Palm Middle School in Phoenix, Arizona, installed video surveillance face recognition. This is a pilot sex offender registration and tracking of missing children.

For all these developments, the Internet is the icing on the cake. It revolutionized video surveillance by removing all obstacles for viewing and monitoring anywhere in the world.

Clearly, humanity has created better and more sophisticated means of surveillance video. The smaller, sleeker and more powerful systems for monitoring video games on the market almost every month. Satellites bounce signals around the world. There are, indeed, eyes everywhere, and many of them are in heaven.

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