Overview
The PT090 algorithm is used to automatically control PTZ cameras when activity is detected. After the PT090 is selected to run on a PTZ camera, a Policy can be configured where the PTZ camera can be automatically controlled by AIRA to zoom and follow objects that have broken the Policy (such as entered into the alarm zone or crossed a tripwire).
Working Scenarios
The PT090 is typically used in non-busy environments. If the environment is too busy the PTZ camera may auto-follow many different objects and its usability will decrease as a result. No fixed camera is required to control the PTZ camera. The PT090 analytic can control the PTZ camera using the video from the PTZ camera only.
PT090 Analytic Configuration Steps
By default, the VE250 analytic is applied to a new camera added to AIRA. Configure the camera to also use the PT090 (see how to select analytics for more help). The PT090 cannot be used by itself, since it is only used when auto-tracking has started. Typically the VE150 or VE250 analytic is also configured on the camera.
Click on the Analytics Config from Server > Configuration.
Select the Camera you wish to configure (the camera must be configured to run the PT090.
Select the PT090 from the Algorithms box.
Set the Analysis FPS, the Record FPS value can be set higher. The Record FPS is set in the camera wizard dialog, not the Algorithms Tab.
Click OK to save settings.
Other configuration
Ensure that the VE150 or the VE250 analytic is selected for the current camera (see how to select analytics for more help).
Further notes
The camera must be stable, if wind or vibrations causes the camera to move, false alarms will occur.
This algorithm does not perform well indoors, or where the objects are very close to the camera, or if the environment is very busy.
Not all PTZ cameras will work properly. Absolute positioning cameras are preferred over relative positioning cameras.
MJPEG mode, or running MPEG-4 at higher frame rates increases the performance.
Troubleshooting
Ensure that enough available CPU is present to perform proper analysis.
Increase the frame rate and image quality settings.
See Also