How to Adjust the Confidence Level for License Plate Recognition in CAMMRA

Confidence level (recognition issue)

If you are experiencing frequent missed license plates, consider lowering the recognition confidence setting by 0.1 or 0.05.
After adjusting the confidence level, monitor the system and review the results after 100-150 license plate events to gather sufficient data.
If necessary, you can continue to lower the confidence level based on the desired outcomes.

However, please note that decreasing this parameter may increase the likelihood of "false" recognitions, such as mistaking leaves, fences, or other objects for license plates.
It's important to monitor the system closely and find a balance between the recognition rate and the occurrence of false events.



    • Related Articles

    • Advanced Settings

      To access the advanced settings in CAMMRA and customize the application according to your needs, follow these instructions: Plate Size Min. and Max. (Default): The plate size settings determine the minimum and maximum size of license plates that ...
    • Managing License Plate Blacklist and Whitelist

      CAMMRA offers the functionality to add license plates to both the blacklist and whitelist. You can conveniently add license plates directly through the web interface or import them from a CSV file. Here's how to manage the lists: Web Interface ...
    • Package Description for License Plate Recognition (LPR)

      Real-time recognition events are received from a camera using either the VAPIX or ONVIF protocol. These events provide relevant information related to license plate recognition, without including the actual image data. To learn more about the usage ...
    • A&E specifications

      CAMMRA This edge app, installed on the Artpec 6, 7 and 8-based cameras, enables complex vehicle recognition including reading the license plate, recognizing vehicle make (brand), model and colour in both slow- and high-speed and multi-lane scenarios. ...
    • License key deactivation

      To reactivate the license key, follow these steps: 1. Access the camera's web interface. 2. Navigate to the App section and locate the CAMMRA application. 3. Click on the settings of the CAMMRA application. 4. In the popup menu, select the ...