CCTV System Design. Part 2/5. Camera zones, Identification, Recognition and EN 50132-7 62676-4

CCTV System Design. Part 2/5. Camera zones, Identification, Recognition and EN 50132-7 62676-4


In the center of the Camera Installation Drawing
Tab you can see colored areas. Different colors represent camera zones with
different pixel density. As you can see the picture quality changes as
you move through the different zones. By default the program shows camera zones
according to European Union standard EN 50 132 Part 7
recommendations. Part 7 of that European Union standard talks
about the different operator’s tasks. Like Identification, recognition, observation,
detection and monitoring. The first type of camera zone is the identification
zone. Which is marked here as Red. In this area you can positively identify a person
beyond reasonable doubt. By default the pixel density here is more than
250 pixels per meter or about 76 Pixels Per Foot The second zone is recognition. Which you can
see here as Yellow. In this area the security operator will be able to
recognize a person known to them. In this area the pixel density is not less than 125
PPM or 38 PPF. Then we have the observation zone (Green). In this area some characteristic details of the
individual, such as distinctive clothing can be
seen. Here we have 62 pixels per meter or 19 PPF Next is the detection zone (Light green) is the area the operator will be able to detect a
presense of a person. 25 PPM or 8 PPF. The monitoring zone (Blue) is to monitor or do
crowd control. 12PPM or 4 PPF. For sure for each type of camera zone you can
set your own number of pixels per meter or
pixels per foot. To do it you can go to menu Settings/Camera
Zone Visualization and enter the required value. The program displays camera zones also on the
next Site Plan tab, where the user can load a site plan and place
multiple cameras to find optimal camera
locations, analyze camera coverage and choose proper
lenses. Next part “Site Plan”

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