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License Plate Recognition Service

The ALPR (Automatic License Plate Recognition) Service allows users to control ALPR engines and ALPR database for license plate detection and recognition tasks

To access the service, go to APLR Service in the Setting page.

ALPR Engine Options​

  • APLR Engine: Select the country you want to detect license plate. (Currently support: Vietnamese, Indonesia)
  • Detector Min Score: Set the confidence level for plate detection. A lower value may detect more plates but may include false positives.
  • OCR Min Score: Set the confidence level required for the OCR engine to confirm a recognized character. Higher values ensure greater accuracy but might miss unclear plates.
  • Color Min Score: Set the confidence level for plate color detection. A lower value may detect may detect colors with lower confidence. Set to 0 if you want to disable this function. To see color detection in event log, enable the Extra info option
caution

The engine setting will be applied to all APLR tasks

License plate database​

Having a license plates database allow you to create AI tasks that can focus on specific scenarios — such as parking systems, restricted areas, or monitoring VIP/blacklisted vehicles. This means instead of detecting every visible plate, ANSVIS will only trigger detection based on the license plate database

Add license plate​

You can add license plate in two ways:

  • Manual Entry: Press the Add button to manually register a plate number into the system
  • Import from CSV: Press the Import from CSV file to upload a CSV file containing a list of license plates for bulk registration following ANS format (click the i icon to learn more).

Create license plate groups​

  • Press the Edit Groups button to start creating and managing groups (e.g., Employees, Visitors, Blacklisted, VIP)
  • After creating groups, you can now assign the license plates to one or more groups.
  • Edit or remove groups anytime to match your operational needs.

Create custom license plate task​

Now when creating a custom ALPR task, you can use filtering feature to tailor license plate detection based on your application