Media Server 24.4
IDOL Media Server Help

# Persistent Change Detection

Detects moving objects and generates an alert when an object becomes stationary and remains stationary, causing a change in the scene. You can use this engine to detect dropped or abandoned bags. This engine requires video input (images are not supported).

Configuration Parameter | Description
--- | ---
FreeformRegion | The region of the scene that you want to monitor.
Input | The name of the image track to analyze.
MaxSize | The maximum expected size of an object.
MinimumTime | The minimum amount of time that an object must remain stationary.
MinSize | The minimum expected size of an object.
NumParallel | The maximum number of video frames to analyze simultaneously.
Region | The region of the scene that you want to monitor.
SampleInterval | The interval at which frames are selected to be analyzed.
Type | The analysis engine to use. Set this parameter to `PersistentChangeDetection`.

## Output Tracks

Output track | Description
--- | ---
`Data` | Contains one record for each object that is stationary for longer than MinimumTime, for each video frame.
`Result` | Contains one record for each object that is stationary for longer than MinimumTime.
`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 is stationary for longer than MinimumTime. This track differs from the `Result` track because records are created as soon as the object meets the minimum time requirement, rather than when the object leaves the scene.
`AlertWithSource` | The same as the `Alert` track, but each record also includes the source frame.

To see an example record, use the action GetExampleRecord.

Copyright 2024 Open Text
Version 24.4 | Last updated September 2024

Send documentation feedback

Close

Send documentation feedback

To send feedback using your default email client, open an email window.

Otherwise, send your feedback and the information below to MFI-swpdl.idoldocsfeedback@opentext.com.

We appreciate your feedback!

Product: IDOL Media Server 24.4

Topic Title: Persistent Change Detection