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6.3 Detail-Setup
Morphing: If activated, tiny, divided objects will be combined to one object. This
mode is helpful in situation of bad contrast to avoid the fragmentation of an object in
several parts, which would be too small for the minimum object size.
Shadow filter: Blurred objects and shadows will be ignored by the sensor. Influ-
ences of clouds or non-sharp-cut spiders on the lens will be minimized.
Number of detections: Changes of the sensor area that – according to the confi-
gured parameters – must cause an alarm has to be detected n times immediately fol-
lowing each other (n = parameter value) before the alarm becomes active. Thus, nonre-
curring events such as light reflections can be excluded.
Note:
If an object enters the alarm area an additional delay (n x 1/8 second) occurs before the
alarm is triggered.
Max. Object Analysis: If activated, the parameter ‚maximum object size„ (area pa-
rameters) would be utilized. In many cases exceeding of the defined maximum cells is
a global changing over the whole picture area, which shouldn‟t cause any alarm for a
short time (see ‚Max. Break„ on page 26).
The disabling of this parameter means that all objects over the minimum number will ac-
tivate the area irrespective of the defined maximum.
People recognition: The analysis of people is based on an idealized contour of an
upper part of a human body. With the sliding controller of People outline the user can
adjust the matching by percentage (typically between 35 and 60%).
Against the recommend middle setting of the Contrast parameter this setting can be set
to foggy in case of bad-contrast situations, or to sharp in applications with sharp-cut ob-
jects and well-lighted scene.
Create statistic: The sensor can make a dynamic statistical census of each single
cell, in order to consider periodical noises, interferences, and to eliminate these influ-
ences against singular events.
The mode is qualified for outdoor applications, in which only few changing and objects
could be detected.
The census starts after a reset new.
Disturbance: Controller to set the size of the disturbance in relation to the min.
size of the object. Default is 50%. Is the size of the disturbances in the alarm area huge
(Bushes, trees), then it`s advisable to increase the value. When snow or heavy rain
appears in the picture, it`s not necessary to change the value.
Statistic reduction: Define the time, where the statistic decreases to zero after no
disturbance is recognized. This parameter should only be changed (decreased), when
public areas with a lot of traffic are monitored.
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