The PT090 Video Engine is used to automatically control PTZ cameras when activity is detected. After the PT090 is enabled for a PTZ camera, a Rule can be configured where the PTZ camera can be automatically controlled by Symphony to zoom and follow objects that have broken the Rule (such as entered into the alarm zone or crossed a tripwire).
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.
Select the camera that will be configured. By default, the VE250 analytic is applied to a new camera added to Symphony. 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.
From the Analytics Configuration tab, select the PT_090 video engine.
It is recommended that all default settings are not modified.
Click OK to save settings.
Typically the PTZ Tracking mask does not need to be set. However, in some cases there may be areas where the PTZ camera should not automatically navigate to. For example, if Symphony detects an alarm and the PTZ camera is configured to zoom on the object, it may be required that the camera stop auto following the object when it gets to certain parts of the scene.
PTZ Tracking Configuration Steps
Select a PTZ camera from the Devices branch of the left pane.
In the Analytics Configuration tab, select PTZ Tracking from the Analytics Engines combo box.
Mark in yellow the areas where the PTZ camera may auto-follow objects, and exclude areas where the camera is not to auto-follow object (this is only the auto following mask, not the alarm zone in the home position).
Select Include Area to mark the image in yellow, or Exclude Area to erase. The PTZ camera will auto follow objects in the yellow mask. The Size slider adjusts the pen thickness.
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.
Ensure that enough available CPU is present to perform proper analysis.
Increase the frame rate and image quality settings.
See Also