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.