5 Mega-pixel Vandalproof IR PoE IP Camera
ICA-E5550V
51
Note that the number of the motion detection region is written in the upper left corner of the
region.
Location of the region
You can move the motion detection region anywhere on the field of view by dragging the top of
the motion detection rectangle as shown on the image. The motion detection regions may
even be overlapping if you like.
Size of the region
By dragging the lower right corner of the motion detection region you can change the size of
the region. The maximum size of the region can even be as big as the whole screen.
Sensitivity
Sensitivity is the parameter that helps us distinguish actual moving targets (people, vehicles)
from the slightly moving background, such as leaves of the trees waving in the wind. In order to
avoid false alarms, we might want the camera be able to ignore small motion. The higher is the
sensitivity level of the camera the smaller shift of the object is needed to trigger the alarm. For
example, if the object within motion detection region has moved for about 1-3 pixels during two
video frames, then such small motion will be discarded by camera if the sensitivity is low, and
will still trigger an alarm if the sensitivity is high. In other words, you can think of sensitivity level
as a
reversed speed limit
– the smaller is the sensitivity, the faster are the objects allowed to
move without being detected.
The biggest challenge of motion detection configuration is to find the settings that do not
produce false alarms and at the same time do not miss any actual intrusions. The rule of
thumb is:
the sensitivity should be as high as possible while not producing false alarms.
The default sensitivity level of the cameras is 70 (on a scale of 0-100) and it is a good setting
for most standard cases.
Trigger threshold
Look at the moving object entering the area of motion detection: although moving quite slowly,
it caused motion activity – several pixel regions reported a motion that was faster than allowed
