ACTi A1D-220-V3.14.19-AC, Руководство пользователя

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Motion Detection Explained
Motion detection works by determine if the amount of motion in target region exceeds a
predefined threshold. If the activity is above the threshold, it triggers motion detection.
Sensitivity: This value decides if a given pixel is considered to have “motion activity”. For the same
motion sequence, more pixels will be marked with “motion activity” under higher sensitivity. The IP
devices are calibrated to provide good performance in normal scenes at sensitivity level 70. For
scenes with little light, reduce sensitivity to prevent overreaction to background noise.
Threshold: Threshold decides how many “percent” of pixels in this scene needs to be marked as
“changed” to trigger a motion event. A smaller threshold means camera will respond to movement
by smaller items. Usually you don’t want this value to be too close to zero, otherwise movement of
extremely small objects or even natural background noise will trigger a motion event, creating false
alarms. Default value is 10. Lower this to detect smaller objects, increase this to filter out small
objects
Interval: The amount of time that must pass before another motion event can be detected. This is
used to prevent the IP device from generating too many motion detection signals.
Night time / Noisy environments: In such cases, the background noise will be much greater than
day time. So random noise will create some non-existent “motion activity”. To avoide getting false
alarms, please lower your sensitivity levels, and slightly reduce the threshold until you get a good
balance.
Object Size: The size of object that may be detected is determined not only by threshold, but also
by the motion detection region size. Generally, a smaller region will always be much more accurate
and sensitive than a big region. Try to cover the scene with two or three MD regions, instead of using
one to cover the whole screen.
Motion Detection Region on the video window. If some regions are not
displayed on screen, just uncheck and check each box again.
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STEP 5 : Setup the sensitivity , interval and threshold for
each motion detection region. (See below box)
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STEP 6 : When you are satisfied with the motion detection settings,
click the [Apply] button to confirm the settings. Click [Reset] to
restore previous settings.For settings about video brightness, saturation
and contrast, just select from the dropdown list and see the result. You
do not need to click apply.
NOTE: Once you finish all settings, be sure to click the [Save
Reboot] button. Otherwise, some settings may not take effect.