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 |
Start
|
The same as the |
End
|
The same as the |
Alert
|
Contains one record for each object that is stationary for longer than MinimumTime. This track differs from the |
AlertWithSource
|
The same as the |
To see an example record, use the action GetExampleRecord.