Anti-spy CCTV

June 2003
Management Services;Jun2003, Vol. 47 Issue 6, p26
Academic Journal
Adding closed circuit TV (CCTV) security to the exterior of premises almost always comes up against the problem of avoiding spying on neighbours. In some cases this is handled by the neighbours agreeing to the overspill CCTV coverage of part of their premises on the basis that in security every little bit helps. But where this intrusion is unacceptable, socially or legally, complicated panning programming, picture manipulation and such ensues, often at great cost and with unsatisfactory results. The best ideas always being the simple ones, the security company Interlaced Technology has come up with a cheap way of dealing with this-a program that blanks out the no-go places the camera sees. Their ITL Priva 4 has user-configurable screen zones preventing the viewing and recording of specific areas of camera coverage. It can be connected from the cameras to the control system. Each of the files is programmed separately, of course, since the cameras view different areas. Each of the four has, in turn, four 4-sided box areas that one can define, from a few pixels upwards. Using four boxes means complex shapes can be defined-for instance by obscuring windows in walls but still spotting the intruder on the outside of the wall. All this is DIY stuff using the picture on the screen from the camera. Once set, the programmer's keypad is unplugged and the settings cannot be removed or altered by security staff.


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