Alert - Path

Generates an alert when an object follows a specified path through the scene. Before using this analysis engine, configure a task such as Object Class Recognition to track objects.

Configuration Parameter Description
AllowedDeviation Specifies how far an object can deviate from the path but still cause an alert.
Input The name of the image track to analyze.
MaximumTime The maximum amount of time permitted to move along the path from start to finish.
Path Defines the path through the scene.
Type The analysis engine to use. Set this parameter to AlertPath.

Output Tracks

Output track Description
Data Contains one record for each object that moves along the path from start to finish, within the MaximumTime, for each video frame.
Result Contains one record for each object that moves along the path from start to finish, within the MaximumTime. If an object moves along the path several times, Media Server can produce several results with the same ID.
ResultWithSource

The same as the Result track, but each record also includes the best source frame.

Start

The same as the Data track, except it contains only the first record of each event.

End

The same as the Data track, except it contains only the last record of each event.

Alert

Contains one record for each object that moves along the path from start to finish, within the MaximumTime. If an object moves along the path several times, Media Server can produce several alerts with the same ID.

This track is identical to the Result track but is present for consistency with other engines.

AlertWithSource

The same as the Alert track, but each record also includes the source frame.

To see an example record, use the action GetExampleRecord.