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green (unwanted) person gets deleted but also big parts of the red one (it will be cut by the
blue mask). This will therefore also eliminate the track of the red person, which is unwanted.
Other with a purple mask. As the sensor scene is still completely processed, also in the area
covered by the purple mask, internally both persons will be tracked. But an additional check
will now lead to the deletion of the green person: As soon the foot position of a person is
located within the purple mask, it will get deleted immediately. For the sample situation, this
is exactly what the user was looking for.
Placement of dwell zones
The dwell time analysis uses a regular zone which is configured in the Config View. When
placing the zone, special care has to be taken that the dwell zone correctly lies within the
sensor’s tracking ar
ea.
The dwell time analysis only considers tracks
which enter the zone across the zone’s
border
and also leave the zone across the zone’s
border. Tracks that are created or deleted within
the zone are not considered by the dwell time analysis.
The below image shows three tracks A, B and C:
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