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Doktor Jons guide to

Doktor Jons Guide to The Use and Application of CCTV & IP Video - a unique resource providing information and advice on  the modern use of CCTV video surveillance
Doktor Jons Guide to The Use and Application of CCTV & IP Video - a unique resource providing information and advice on  the modern use of CCTV video surveillance

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So let's look in a little more detail at the four potential objectives for any CCTV security system.

 

• Deterrence

This is in practice, the overall deterrant effect of a system, irrespective of whether the equipment is either working, or even being constantly monitored.

In practice, in the context of using CCTV, deterrence is simply a function of belief that if something is done wrong, the individual will be identified through the use of video surveillance.

Unfortunately, over a period of time, habituation to the presence of CCTV will often see the deterrent effect decline dramatically, which can usually only be reversed by a combination of maintaining the highest levels of performance efficiency (results based, and not technical specification based), and equally widely publicising the systems effectiveness; a technique which DJ describes as "Deterrence through Detection" or "DtD".

 

If people think the system is working very well, then that will act like a fire blanket, and pretty effectively smother many (but not all) aspects of criminality in the surveillance monitored zone.
 

(What type of camera will deter crime?... Why not play 'spot the dummy'!)

 

• Incident Monitoring

The ability to observe events as they happen; and if appropriate, continuously co-ordinate a response, proportionate to the nature of the incident.

This aspect of video surveillance more than most, is generally enhanced in effectiveness when used in conjunction with other technologies and techniques; for example, use of radio link communications, direct voice access into the control room, perhaps using 'panic or call points', motion triggered image switching / display etc.

 

• Site Management

The use of a CCTV system, to assist in general site management duties, which of course, need not necessarily be security related.

In many situations, there are a number of occasions where video surveillance can assist in deploying personnel, managing visitor flows, identifying 'Health & Safety' issues, traffic management etc.

 

• Evidential Recording

The ability to manually or automatically store images, before during and after an incident of interest, recorded to video tape, hard disc, magnetic media, or even a hard copy printout; such that the material may be usefully used to assist in a proper investigation, and if required be acceptable for submission to court, as trial evidence.

Although the concept of 'Evidential Quality Recording' (EQR) is a fairly broad one, it should be understood that there is a world of difference between images that are acceptable for use as evidence in a court of law, and recordings that provide the highest level of quality suitable for reliably identifying individuals or vehicles, beyond reasonable doubt.


To produce an initial outline assessment of any given site (global), the four basic requirements must be scored, and then the figures brought togethor to produce an overall percentage rating.

More information on applying the DISE Principles to effective CCTV Profiling >>>

 

<<< Return to information on developing a System Profile

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Looking at 'DISE' in a bit more detail ...
 

“When carrying out a CCTV security survey, four main operational objectives must be assessed, in order to try and quantify the precise factors, which will affect the systems eventual operating requirements.

This in essence, is the basis for developing a System Profile".

 

Using the acronym "DISE", it's possible to define the various objectives of CCTV deployment, required to make a system function to best effect.

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An 'heritage' Dome Public Space Surveillance (PSS) CCTV camera in central London