License Plate Recognition Source Code C Language

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License Plate Recognition Source Code C#. For demonstration purposes we show here a part of the SDK of the CARMEN License Plate Recognition Engine of Adaptive Recognition Hungary. The native CARMEN API provides interface using the C++ programming language to the recognition services of the CARMEN Recognition Engine.

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Active5 years, 7 months ago

As the title suggest, i want to build an ANPR application in windows. I am using Brazilian number plates. And i am using OpenCV for this.

So far i manged to extract the letters form the numberplate. Following images show some of the numbers i have extracted.

The problem i am facing is that how to recognize those letter. I tried to use Google tesseract. But it fails to recognize them sometimes. Then i tried to train an OCR data base using OpenCV i used about 10 images for each character. but it also did not work properly.

So i am stuck here. i need this for final year project.So can anybody help me?? i would really appreciate it.

Following site does it very nicelyhttps://www.anpronline.net/demo.html

Thank you.

user2389323user2389323

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2 Answers

you could train an ann or multi-class svm on the letter images, like here

berakberak Code

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Check out OpenALPR (http://www.openalpr.com). It already has the problem solved.

If you need to do it yourself, you really do need to train Tesseract. It will give you the best results. 10 images per character is not enough, you need dozens or hundreds. If you can find a font that is similar to your plate characters, a good approach is to print out a sheet of paper with all of the characters used multiple times. Then take 5-10 pictures of the page with your camera. These can then be your input for training Tesseract.