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Video Surveillance: Cameras
built 290 days ago
Video surveillance cameras help defend your home or business against break-ins. With wired or wireless cameras, you can monitor both the inside and outside of your establishment. Keep a video record of events with a digital video recorder (DVR) or check your premises remotely with IP network cameras. Select a category below to start shopping or click here to view all products.
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Video surveillance is more prevalent in Europe than it is in the United States. Evidence from Europe... suggests that the benefits of CCTV are significantly overstated. In the past decade, successive UK governments have installed over 1.5 million cameras in response to terrorist bombings. While the average Londoner is estimated to have their picture recorded more than three hundred times a day, no single bomber has been caught. Despite this evidence, in the United States, current anti-terrorist fears, combined with the surge in road rage, the perception of an increase in crime, and several high-profile school shootings, are causing many to call for increased video surveillance not only on highways, in schools, public parks and government buildings, but in all public spaces.
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Public video surveillance for commercial and private purposes is not a recent phenomenon. The private sector began using CCTV surveillance in banks in the early 1960s, as mandated by federal law, and later in commercial buildings. By the 1970s, CCTV surveillance was ... in use in hospitals, all-night convenience stores, art galleries, and in many other commercial locations. Video technology at the time was limited to passively record events, with little or no means for remote active monitoring. On many occasions, police officials were unable to use remote video cameras images to prosecute criminals because quick movements by the criminals resulted in blurred pictures.40
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The latest evolution in surveillance video recording is the network video recorder, or NVR. It is a device that receives video that has already been compressed and converted to digital format and is sent over IP or asynchronous transfer mode (ATM) network connections. The video is converted to the digital format either by dedicated video encoders ... on the network or by an IP camera, essentially an analog camera with a built-in encoder. Some newer cameras have digital image sensors so the video is captured directly in digital form for transfer over the network. Video playback from NVRs is subsequently sent to hardware decoders for display on analog monitors or is displayed on PCs by software decoders, e.g. QuickTime.
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Video surveillance and photography surveillance are two types of monitoring that use images in order to keep you safe or in order to gather evidence. Video surveillance makes use of video cameras or camcorders to catch moving images and even sounds while photography surveillance makes use of still images. Both types of surveillance are important in investigations and both can prove useful in helping you to “see” what is happening in areas you have no access to.
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EPIC launched a project, "Observing Surveillance," which documents the surge in the number of video cameras placed in DC's public spaces. Some of the arguments invoked by law enforcement authorities to justify their use of video surveillance are that it helps prevent crime and that there is no expectation of privacy in public spaces. Evidence... has shown that video surveillance cameras have limited, if any, effects on crime prevention. In most cases, surveillance merely enhances people's sense of security rather than their actual physical security. There is, thus, concern not only about the amount of images and information collected, but its uses and the length of time it is retained. Many also question whether this surveillance impinges upon free speech and freedom of association – especially when it is used to monitor political protests and rallies.
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