[Libreoffice-bugs] [Bug 114721] Special char: find the char by drawing it

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=114721

--- Comment #2 from LE GARREC Vincent <legarrec.vincent at gmail.com> ---
Thanks for your advice. Actually, my goal is to make a proof of concept (PoC)
to see 1) if this function is useful and 2) under what constraints.

I finally found what was my problem. A .cxx was not automatically recompiled
after modification of a header. make clean and make do the trick.

I will try to create a branch on gerrit once all will work. It should take a
week.

I decided to use NN because I know how to use it to do recognize of character.
The PoC and feedback will tell if it's a good idea.

I decided to use 15*15px to reduce size of the NN. Actually, the NN generated
by fann is a 300Mo plain text file. Increasing the size must be testing. And
improving the size of internal layers of the NN is a need but it's out of my
skill.

Actually, the number of characters is about 2200. But I found there's a way to
use all of them. It will increase by a lot the number of characters.

Theoretically, a NN can handle any number of character. The NN need X input
(number of pixels of the image to recognize) and Y output (number different
character). But this will increase, again..., a lot the cache.

I will continue to work on it now I'm not stuck anymore and will keep you in
touch when the PoC will be finished.

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