Extracting tag number from car tag


Testing the free or api calls. Took a picture of a tag of a car but free ocr api server did not recognized the 6 characters.

Please help.



OCR for license plates is challenging, and often needs some kind of pre-processing. Here in your image the letters are very large (too large for the OCR to recognize them as letters). My approach for a first quick test:

  • reduce the image to 33%
  • use Korean as OCR language (this, and Chinese, work much better than English for alphanumeric OCR).

The result is CK M57. Not perfect, but already much better than before:

OCR Won't recognize Steam keys (Dot Matrix OCR)

Yes I see you did much better.

Thank you very much for your help. Will test next and reply with my results.

Thank you very much,


API : Multi-lines not allowed in French or English