Axis Communications Q7411 Camera Accessories User Manual

AXIS Q7411 Video Encoder
AXIS Video Motion Detection
To use visual conrmation, Internet Explorer and AXIS Media Control (AMC) must be used.
When visual conrmation is enabled, all moving objects found by the application will be encircled and followed by polygons. A red
polygon indicates that the object is found and is detected as a moving object. A green polygon indicates that the object is found but
is ignored because it is not in the include area or because of one of the ignore lters.
To enable visual conrmation:
1. Select the Enable visual conrmation option.
2. Click Save.
Visual conrmation is disabled after 15 minutes.
After modifying a setting, click Save to apply the change. The video stream will be restarted and it may take a few seconds
before the change is applied.
Enabling visual conrmation may introduce video latency.
Ignore Filters
If AXIS Video Motion Detection 3 detects too many unwanted objects, start by modifying the include and exclude areas. If still too
many objects are detected, use one or more of the ignore lters.
Supported ignore lters:
Swaying objects — Used to ignore objects that only move a short distance
Short-lived objects — Used to ignore objects that only appear in the image for a short period of time
Small objects — Used to ignore small objects
Ignore lters are applied to all moving objects found by the application and should be congured with care to ensure that no
important objects are ignored.
Only use ignore lters if needed and use as few lters as possible. Enable and congure one lter at a time and use visual conrmation
to verify the settings before enabling another lter. When conguring a lter, start with a small lter size, click Save and use visual
conrmation to verify the settings. If required, increase the lter size in small steps until the number of unwanted objects is reduced.
Swaying Object Ignore Filter
The swaying object lter is used to avoid detecting objects that only move a short distance, for example moving trees, ags and their
shadows. Use the lter if such objects cause a lot of false detections. If the swaying objects in the scene are large, for example large
ponds or large trees, use exclude areas instead of the lter. The lter will be applied to all moving objects in scene and, if set to
a value too large, important objects might not be detected.
When the swaying object lter is enabled and the application nds a moving object, the object will not be reported as detected (red
polygon in visual conrmation) until it has travelled a distance larger than the set lter size. The alarm sent by the application will be
sent when the object is detected. If the alarm is used to start a recording, congure the pre-trigger time so that the recording also
includes the time the object moved in the scene before being detected.
To enable the lter:
1. Select the Swaying objects option.
2. Click on the
icon to show the lter size in the image.
3. Use the mouse to adjust the lter size. Start with a small size. Objects moving a distance shorter than the distance from
the center of the cross to one of the arrowheads will be ignored. The lter can be moved to the location of a swaying
object to make it easier to adjust the size. Note that the lter will be applied to all objects in the image, not only to the
ones at the location where the lter is placed.