Braille detection and translation in C++

according to my studies i create a progress which will be used to detect braille on a photo and translate it to normal speech. i already finished the detection of the single dots, and their location on the paper. now my question is how i actually can do the translation. my idea was, to make up a pattern with proper size to fit in the single letters in braille. after that i want to connect their locations which should give me a typic design for every single letter. now i only need to compare the design with a sample i created before.
that's it for the theory. actually i have no idea how to realise it in code. I would really appreciate if you could help me find a solution.

Thanks a lot, JOUNGE
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