To set up the LPR channel object, you must select the main camera for license plate recognition and, if necessary, an additional synchronous camera.

The main recognition camera is directed at the traffic lane. The synchronous additional camera covers the same area as the main camera, but it can be mounted in another place. You can synchronize the operation of the main and additional cameras using scripts or macros.

Example. Gas filling station. The main camera is directed at the incoming lane and recognizes license plates approaching cars. The additional synchronous camera is mounted at the side of the lane and monitors the fueling process.

To select the cameras, do the following:

1. Go to the settings panel of the LPR channel object, corresponding to the activated module (see Activating the software module used for identifying license plates).
   

2. From the LP recognition drop-down list, select the required Camera object (the main camera for license plate recognition).

   The same camera can be used for various license plate recognition channels.

3. From the Synchronous drop-down list, select the required Camera object (the additional synchronous camera). To get contextual frames from an ANPR camera, you must select the same camera that is selected as the main one.

   Frames from the synchronous camera are recorded only if continuous recording is enabled on both cameras.

4. Click the Apply button.

The camera selection for the license plate recognition channel is completed.