Braille Recognition to text (image processing)

I haven’t written anything in OpenCV myself yet, but I searching for a way to convert Braille in images to text. What is the best way to proceed?
The braille was constructed as a vector, so it is available in very good quality. Now I want to check if the correct characters have been used. This is surely easy to solve with OpenCV.
Best via command line, so that a whole set of these braille images are converted to text