Advertisement
Help Keep Boards Alive. Support us by going ad free today. See here: https://subscriptions.boards.ie/.
https://www.boards.ie/group/1878-subscribers-forum

Private Group for paid up members of Boards.ie. Join the club.
Hi all, please see this major site announcement: https://www.boards.ie/discussion/2058427594/boards-ie-2026

CCTV camera question

  • 02-05-2006 05:44PM
    #1
    Closed Accounts Posts: 518 ✭✭✭


    The reason I'm asking this is 1) to see if a friend is making something up and 2) I wlways wondered since I was a little child.

    How the hell do CCTV cameras work? Not literally I mean, how do they help police and all? If a security guy notices someone assaulting someone all they'd have is a choppy picture of someone who they'd never see again. Or do police men print out the ppicture and stick it to their dahsboards just in case?

    I don't get it! I know that CCTV footage can be used as proof if say Mary Smith got assaulted on O'Connell street at 4.15pm (then there would be proof). but what if Mary Smith never reported it? Then what?

    I know this sounds weird and all but I always wondered!


Comments

  • Registered Users, Registered Users 2 Posts: 68,173 ✭✭✭✭seamus


    They're not always as choppy as you might see on TV. The quality of the camera is usually a function of how expensive it is, and what kind of place it is. Garda control centres will have massive datacentres backing them up. A small corner shop will only have a small video recorder, so the video is time delayed to fit a whole days' recording on one tape.

    The tapes also provide other clues as to a person's identity, i.e. sex, rough height, hair colour, build, clothing, etc etc. Experienced Gardai will have the skill to spot these people in a crowd.

    9 times out of ten anyway, if someone is spotted committing a crime on a CCTV camera, they're already known to Gardai and someone can just say "That's Anto Walsh", then they grab him and use the video to prosecute.


  • Closed Accounts Posts: 307 ✭✭Idgeitman


    seamus wrote:
    9 times out of ten anyway, if someone is spotted committing a crime on a CCTV camera, they're already known to Gardai and someone can just say "That's Anto Walsh", then they grab him and use the video to prosecute.

    Thats the main thing that happens, the persons done something before, then they just are prosecuted by the video. As for the quality, in difference places ive worked over the years, the systems arent as bad as they used to be. Alot of them are using digital records now, so no more dodgy VHS pictures.

    In once place were i used to work, the wall of shame was amazing. Actual photo quality pictures could be printed off of various people strokeing, The shop also had links to the managers home, Wich was creepy when he called up and then suddenly the duty manager tells you to get to work, and that was only in a small shop, nothing glourious.


    CCTV these days are a second set of eyes these days, aint nothing like how it used to be, But they still normally cut frames out like they used to, so it looks like the suspect is hovering across the shop :D

    ~ Idgeitman


  • Registered Users, Registered Users 2 Posts: 20,099 ✭✭✭✭WhiteWashMan


    i work at cisco, and we can do some really cool stuff with IP CCTV.

    you can do all sorts of face recognistion stuff, the picture can be as perfect as your monitor can be.

    and the reason for CCTV is for a couple of different things. one is a deterent, evidence is another, and the obvious monitoring of situations.


  • Registered Users, Registered Users 2 Posts: 17,958 ✭✭✭✭RuggieBear


    OP if you are really interested i wrote a thesis on CCTV and i can send it your way.

    Tbh, it's not the most stimulating:D

    Here's a little bit
    ....the basic mechanisms upon which it is assumed CCTV reduces crime:
    Deterrence
    Efficient Deployment
    Self Discipline
    Detection

    Deterrence The premise is that offenders make reasoned decisions about the risks of offending in the presence of CCTV and choose either not to offend or offend elsewhere (Armitage, 2002).

    CCTV may reduce the motivation of a potential offender by increasing the perceived risk. The presence of CCTV may remove suitable victims by making people more security conscious and as a consequence less vulnerable to crime. CCTV can act either directly as a capable guardian or by allowing the police to respond more quickly to an offence, introduce the presence of a capable guardian.

    Efficient Deployment CCTV allows for the more efficient deployment of resources. CCTV allows one camera operator to “patrol” larger areas more quickly and efficiently than someone on the ground. In their study on the perceived effectiveness of CCTV, Honess and Charman (1992), found that efficient management (or as one respondent is quoted “adding to our options in the management of the centre”) was the main objective for the installation of CCTV in three out of four case studies. CCTV provides information to those who are monitoring a scene enabling them to decide whether or not police assistance is required. Often there is another monitor in the police control room showing staff there an incident that the camera operators feel they should be alerted to. Once alerted the control room staff can use the information to coordinate an appropriate response. If there is a large group of people fighting, it is usually necessary to send more than one officer and if there is a small dispute it might be important not to inflame the situation with a heavy police response (Brown, 1995).

    Self Discipline With close links to the routine activity theory discussed above, this falls into two categories. There is self-discipline by potential victims, who are reminded of the risk of crime and alter their behaviour accordingly. In this way, CCTV can be seen to reduce the number of suitable targets and thus reduce the chances of a crime taking place (Armitage, 2002).

    The second category is self discipline by potential offenders and draws heavily upon Foucault’s (1991) discussion of the Bentham’s Panopticon. The threat of potential surveillance causes individuals to alter their normal behaviour and instead police themselves.


    Detection Of all the mechanisms, this is the most publicised. There have been a number of high profile cases in which images of the offenders were captured on CCTV, aided their detection and arrest (Armitage, 2002). As Michael Howard, then Home secretary stated in 1995, “CCTV catches criminals. It spots crimes, identifies lawbreakers and helps convict the guilty” (McCahill and Norris, 2002).

    However, what is not so widely publicised is the effort that often goes into detection using CCTV. McCahill and Norris (2002) highlight the case of David Copeland who was captured with the aid of CCTV. He was arrested after planting three nail bombs in London. In order to identify him Police studied 1097 videotapes with over 26,000 hours of recorded material. It took fifty detectives over ten days work to identify him and as long to find an image of sufficient quality to release to the press.


  • Closed Accounts Posts: 3,285 ✭✭✭Smellyirishman


    The reason I'm asking this is 1) to see if a friend is making something up

    So, what did s/he tell you?! :)


  • Advertisement
  • Registered Users, Registered Users 2 Posts: 10,984 ✭✭✭✭Lump


    Also it helps to prove that the crime happened ;) Normally CCTV is crap becuase it's VHS's used to record, get a few HDD recorders in there, spot on!

    John


  • Registered Users, Registered Users 2 Posts: 3,084 ✭✭✭dubtom


    A mate of mine works in a shopping centre and they have an expensive system that moniters the BINS, yes you heard right.The camera is about 50 yards away from them, mounted on the roof in a dome. Scans the hole complex.You would be amazed at the amount of people who dump their household rubbish at recycling centres, which this place has. This morning there was about 2 truck loads of waste to be removed. Everyone who dumped had their reg recorded and will get a fine any day soon.


  • Closed Accounts Posts: 518 ✭✭✭Bartronilic


    My friend (well actualyl a friend of a friend) said he was caught doing the business in a car park, identified and s in trouble. I highly doubt he had it in the first place though but it made me wonder. And anyway something minor like that - would the police care?

    Anyway thanks for the answers! I have the choice to do law in college next year and i think i might cos I hate not knowing the law.


Advertisement
Advertisement