CCTV Sumrav

New Delhi

he importance of having a professionally designed specification can be seen from the fact that when the police seek to use CCTV evidence in court it is found to be inadmissible in at least 80% of cases. While it is true that almost anyone can look at a location and suggest a number of Cameras, only those who have experience in this field, through an understanding of the principles of optical science, will generally be able to recommend a Camera that will give the customer a picture with the best definition or coverage. Often it is also possible to give clients "added value" by locating Cameras, and utilising lenses which are able, not only to view the area of concern, but also give peripheral vision of other points of interest. During a visit to a school there was a camera at each end of the 30m corridors. These cameras had standard lenses and were providing facial recognition for the 3.5m of corridor nearest the cameras. This is the case in 95% of the systems we audit. If a pupil came out of classroom, committed a misdemeanour and then returned to the classroom there was no possibility of of knowing who they were. By setting the cameras to view the opposite end of the corridor and the careful choice of lenses the cameras would have been able to provide facial recognition for half of the corridor, enabling the whole corridor to be viewed with pupils being recognised. Instead of having recognition for 7m all 30m could have been properly viewed providing a 428% increase in effectiveness. This is just one of many differences when a system is designed correctly. Our experience as CCTV Consultants is that in the vast majority of cases companies are simply sticking cameras on walls and pointing them in the general direction with little or no understanding the optical science necessary to correctly design a CCTV system.