The VE150 is a good choice for indoor & outdoor motion tracking applications. The engine has the ability to classify the difference between people and vehicles, and can detect if the object is stopping, starting, or simply moving through the scene. Alarm rules can therefore be designed around these features. Typical deployments include commercial buildings, where people or vehicles are to be detected, military bases, where objects entering an alarm zone or crossing a pre-defined perimeter should be detected, or for car dealers and construction sites, where full time security guards are not a cost effective approach to detecting people or vehicles after hours. The VE150 will produce far fewer false alarms caused by a changing outdoor environment as compared to normal "motion detection" algorithms.
The VE150 is a good choice in indoor and outdoor environments. Depending on the application and environment, different VE150 modes of operation are available, which can be used for outdoor environments as well as indoor people counting and dwell time applications.
Select Server
> Configuration.
Select a camera from the Devices branch of the left
pane.
In the Analytics Engines
tab, select VE150. By default VE250 is selected, in which case you must
first deselect VE250 (see how
to select analytics for more help).
In the Analytics Configuration
tab, select Intel_VE150 from the Analytics
Engines combo box.
In the Motion Analysis
tab, define the Operation Mode.
Next, define the area in yellow where objects should
be detected. Select the Erase
radio to erase the yellow mask, and select the Draw
radio to draw the mask. The Size
slider adjusts the pen thickness.
Select the Camera Position tab. Depending on which Operating Mode was selected, the Camera Position options will vary.
Above: Outdoor Tracking mode selected.
Further configuration is optional, but may be necessary to fine-tune detection depending on the environmental conditions and the type of events that occur. Ensure the Camera Position and Motion Analysis mask is set properly before modifying the Basic or Advanced tab.
For more information
on different VE150 Operation Modes, consult the Technical Article - The
new VE150 in Aimetis Symphony v6.5.
Configuring the VE150 (see above) is required before Rules using the VE150 can be created. To configure a Rule using the VE150, assuming Outdoor tracking mode was selected, follow the steps below:
Open Server
> Configuration > Rules and click New.
Select the camera (if it is a PTZ camera, select the
camera
tour position).
Pick the VE150 from the video engine combo box. For
a Digital fence, skip to Step 6. For an Alarm zone, continue to Step 4.
For an alarm zone: Mark the Alarm zone using the Draw and Erase options. The Size slider changes the drawing or erasing thickness.
Any part of track, End of track, Beginning of track.
Usage: Any part of track denotes the object can be anywhere in the red
alarm zone to trigger an alarm. End of track denotes that the object has
stopped in the alarm zone. Beginning of track denotes that the object
started moving in the alarm zone. For example, if you wanted to alarm
on vehicles moving anywhere in the alarm zone, select Any part of track.
If you wanted to alarm on vehicles entering the alarm zone and stopping
in it, select End of track. If you wanted to alarm on vehicles that were
parked in the alarm zone and started to move, select Beginning of track.
These settings only apply to alarm zones and not digital fences. Skip
to Step 7.
For a digital fence: Click the Any
Fence or Delete Fence to
draw and erase the digital fences. The arrows define
which direction the offending object must pass through the line(s) in
order to cause an alarm. Double click the arrows to change their properties.
Red indicates an object crossing the line in this direction will cause
an alarm while the green arrow denotes the object crossing the line in
this direction would not cause an alarm. Multiple
fence lines can be drawn. If All fences has been selected, the object
must cross through all fences drawn to cause the alarm.
The Class checkboxes
allow specific classes of objects to be filtered or detected.
Click Next to continue to next step in wizard.
In typical situations, the VE150 can detect a person 100 feet from the camera, a vehicle 150 feet from camera (assuming 4CIF or 640x480 and adequate lighting conditions). These distances depend on the lens and zoom used.
Keep the camera lens clean from rain droplets or bugs. Rain droplets hitting the camera lens directly will cause false alarms. Bugs will do the same. If a spot light is installed too close to camera, it will attract bugs.
The camera must be stable, if wind or vibrations causes the camera to move, false alarms will occur.
Ensure the correct frame rate is being utilized, and that enough CPU is available on the system to perform proper analysis.
Verify that perspective has been properly set by adjusting the Camera Position tab.
If nuisance false alarms occur by trees or reflections, try the Dynamic background model (Environment tab). If problems still persist, contact Aimetis for support.
See Also