i3 International SRX PRO User Manual page 109

Chapter 1. SRX-Pro Server
by normal occurrences, such as changing illumination across the period of a day. The background refresh delay can
be set between 1 second and 1800 seconds (30 minutes). To disable background refresh feature, Check off Never
Update Background checkbox.
12. Configure Detection Sensitivity (10% - 97%). This parameter accounts for the change in image brightness. This
percentage determines the acceptable level of brightness change. If the illumination is increased slowly and evenly,
it is unlikely to cause an alarm. However, if the light switch is suddenly turned on in a dark room, the dramatic change
in image brightness will set off the alarm.
13. Configure Detection Size (10p - 100p). This parameter determines the number of pixels representing 1 (one) "block".
At least one block has to be detected by Intelli-Guard™ to trigger the alarm. The smaller the size of the block, the
more "sensitive" Intelli-Guard™ will become and the smaller the size of the objects that will set off the alarm.
For instance, assume that a bird occupies 10 pixels in a resolution of 720x480. If the Detection Size is set to 10 pixels,
the bird will represent 1 block; therefore the alarm will be triggered. However, if the Detection Size is set to 20 pixels,
the bird will no longer represent 1 block and will be omitted by the Intelli-Guard™. A larger Detection Size, thus, detects
larger objects (e.g. people) and omits smaller ones. This setting is used to decrease the number of false alarms. After
configuring this setting, it is important to run trials to ensure that the Detection size is reacting to objects of a desired
size. On the screen, the area of a detected change will be indicated by, green outline with a number. The number
indicates how many detection blocks make up the area.
In the example above, motion was detected in an area, which is made up of 5 detection blocks. To have the number
of detection blocks shown on the live view screen, select Show in Detection Box frame. To hide them, select Hide.
14. Click Set Active Time to configure active time for the selected area. Intelli-Guard will detect motion in the selected
area ONLY during the Active Time. The following window will appear.
15. Check off desired active time(s) for the selected area. In the example above, the Intelli-Guard motion detection in
Area No. 1 is active 24 hours a day.
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Intelli-Guard™ Setup