Axis Network video Manual page 19

> Preset positions. Many PTZ cameras and PTZ dome cameras enable a number of preset
,
positions normally between 20 and 100
been set in the camera, it is very quick for the operator to go from one position to the next.
> E-flip. When a PTZ dome camera is mounted on a ceiling and is used to follow a person in,
for example, a retail store, there will be situations when a person will pass just under the
camera. When following through on the person, images would be seen upside down without
the E-flip functionality. E-flip electronically rotates images 180 degrees in such cases. It is
performed automatically and will not be noticed by an operator.
> Auto-flip. PTZ cameras, unlike PTZ dome cameras, do not normally have a full 360-degree
continuous pan due to a mechanical stop that prevents the cameras from making a
continuous circular movement. However, with the Auto-flip functionality, a PTZ network
camera can instantly flip the camera head 180 degrees and continue to pan beyond its zero
point. The camera can then continue to follow a passing person or object in any direction.
> Auto-tracking. Auto-tracking is an intelligent video functionality that will automatically
detect a moving person or vehicle and follow it within the camera's area of coverage. Auto-
tracking is particularly beneficial in unmanned video surveillance situations where the
occasional presence of people or vehicles requires special attention. The functionality cuts
down substantially the cost of a surveillance system since fewer cameras are needed to
cover a scene. It also increases the effectiveness of the solution since it allows a PTZ camera
or PTZ dome camera to record areas of a scene with activity.
Although PTZ cameras and PTZ dome cameras may share similar functionalities, there are dif-
ferences between them:
> PTZ network cameras do not have a full 360-degree continuous pan due to a mechanical
stop. It means that the camera cannot follow a person walking continuously in a full circle
around the camera. Exceptions are PTZ cameras that have the Auto-flip functionality; for
example, AXIS 215 PTZ Network Camera.
> PTZ network cameras are not made for continuous automatic operation or so-called guard
tours where the camera automatically moves from one preset position to the next.
More on PTZ network cameras, which are available in mechanical or non-mechanical versions,
and PTZ dome network cameras is provided in the next sections.
NETWORk CAMERAS - CHAPTER 2
,
to be programmed. Once the preset positions have
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