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4.5.3 Camera placement
Camera placement is also an important factor in deterring vandalism. By placing a camera out
of reach on high walls or in the ceiling, many spur-of-the-moment attacks can be prevented.
The downside may be the angle of view, which to some extent can be compensated by selecting
a different lens.
4.5.4 Intelligent video
Axis’ active tampering alarm feature helps protect cameras against vandalism. It can detect if a
camera has been redirected, obscured or tampered with, and can send alarms to operators. This
is especially useful in installations with hundreds of cameras in demanding environments where
keeping track of the proper functioning of all cameras is difficult. It is also useful in situations
where no live viewing takes place and operators can be notified when cameras have been tam-
pered with.
4.6
Types of mounting
Cameras need to be placed in all kinds of locations and this requires a large number of variations
in the type of mounting.
4.6.1 Ceiling mounts
Ceiling mounts are mainly used in indoor installations. The enclosure itself can be:
>
A surface mount:
mounted directly on the surface of a ceiling and, therefore, completely
visible.
>
A flush mount:
mounted inside the ceiling with only parts of a camera and housing
(usually the bubble) visible.
>
A pendant mount:
housing that is hung from a ceiling like a pendant.
Figure 4.6a An example of a surface mount (left), a flush mount (middle) and a pendant mount (right).
CAMERA PROTECTION AND HOUSINGS - CHAPTER 4
