eLine Technology ETV_v7 - Manual (Page 75)

ETV System Server Software - User’s Guide Page 75
Sensitivity
Adjusts the sensitivity used for analytics object detection. Higher sensitivity will detect more subtle
image changes.
Track Object After
Exists
The number of milliseconds for which the object must be detected before it is tracked as an object.
Increase this value to reduce false alarms. In a very wide field of view, this value can be safely
increased. In a narrower field of view, this value must be adjusted with caution and could possibly
result in valid persons not being detected if the value is set too high for the conditions.
Drop Objects After
Missing
The number of milliseconds for which a tracked object must be missing before it is no longer
tracked.
Object Size Error
Range
Sets the minimum and maximum variation to the person size set in the Perspective Settings.
Light Change
Threshold
Allows light changes to occur within the image without triggering any false objects to appear within
the image. For example lights turning on or off.
Max Analyze FPS
Adjusts the maximum number of frames per second that will be used for analysis. If this value is
increased, more CPU load will be required for the analytics engine.
If objects are moving very quickly through the image in a narrow field of view then this value can
be increased to detect objects more accurately. If objects are moving very slowly through the
image in a wide angle view then this value can be decreased to reduce CPU load.
Two Pass Object
Count
Allows more comparison with past frames to provide a more in-depth analysis using logical
deductions in views with perspective.
Strict size
estimation
Puts more emphasis on the size of an object and less emphasis on its behaviour to determine if it is
a valid person or vehicle.
Count by Trace
Objects must be travelling through the image and move valid distance
Objects must be travelling through the image at a valid speed
Average size of the object must be consistent as it moves through the image
Display Options
Set what information to display on Video Feed for Each Video Analytics Rule.