How the Internet Age is Making CCTV System Quality Better

Article Written By: Kathryn Dawson

There is no doubt that cctv security systems have made a world of difference to both home and business security since they first emerged commercially in the 1980s. However, there has always been a nagging dissatisfaction with the quality of images that were captured. It has only been in recent years, with advances in the technology used in cctv monitors and cameras, that the quality of picture has improved sufficiently to make identification a more confident undertaking.

It is perhaps obvious that ip cameras have a number of advantages over the regular analogue security cameras that are so commonly available. It is their ability to send images directly to a computer and over the internet that sets it apart, but the digital quality that its images have makes it a far superior option for surveillance purposes.

There are two types to choose from, of course, with centralised cameras requiring recording equipment and decentralised cameras boasting a recording capability that is built into the unit itself. The images can then be downloaded using a USB drive or some other digital storage device. The latter type is the most versatile, allowing cameras to be set up anywhere on a premises, safe in the knowledge that each one is loading data individually.

The former type is a remote signal based system, sending to a central recorder from a limited distance, but should there be a loss or interruption in the signal then gaps in surveillance footage can appear. And, a simple fault in the central recording equipment itself, which with some models can cater for as many as 32 cameras, can result in footage being lost too. Of the two then, the cameras that independently store images are considered the best to choose.

The picture quality in cameras that are ip developed are superior for two main reasons. Firstly, the technology uses much better transmission systems, which results in the frame rate per second increasing. That means a crisper movement of subjects, which makes them easier to follow.

Better transmission is also achieved through a decrease in compression while not reducing the bandwidth being used. The problem with many analogue cameras has always been the fuzziness of their picture quality, particularly when the subject is moving, such as a burglar or thief.

The second way in which these cameras are superior is in the high definition resolution that they use. It is this feature that makes the image of the subjects on screen so much more defined, and therefore more possible to examine in detail. It also means that there is a highly reduced chance of images being pixelated when zoomed into.

Of course, the whole point of security systems at all is to record observations so that, should anything happen, it can be examined, whether by staff or by the relevant authorities, such as the police. What can be seen can then be used as evidence, if necessary, by the authorities against any intruder or criminal.

The quality of a monitor is equally important, though, with low grade screens only serving to diminish the advantages that the camera brings. Generally, there are only a handful of factors that make a monitor worth its salt or not. Namely, resolution, suitability for the specific camera system and cost.

Obviously, resolution is hugely important, affecting the actual quality of detail on screen, which in turn affects subject recognition rates. Its suitability with the cameras relate to the basic idea that colour cameras cannot be used with black and white monitors. The cost, of course, is always a concern with value for money important for home owners and business owners alike.

Whatever cctv system is installed, and regardless of whether it is in a residence or a business, the quality of image is hugely important. The system must be mapped out effectively to get the best possible coverage, but the effectiveness of modern cctv monitors displaying the pictures taken plays a key role in the quality of the system too.

However, it is thanks to the inroads made in internet technology, and the development of ip cameras in particular, that image quality has improved to the standard that it is today. The convenience, versatility and affordability of high tech security systems, meanwhile, has ensured that the ip option continues to flourish.

About the Author

Kathryn Dawson - CCTVdirect offers all the best cctv systems and cctv monitors under one roof.

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This Article Has Been Published on Thu, 28 Apr 2011 and Read 250 Times

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