If you need to detect just orientation it should be faster to use only leptonica functions. See https://tpgit.github.io/Leptonica/flipdetect_8c_source.html http://tpgit.github.io/Leptonica/skew_8c_source.html
Zdenko On Thu, Jan 11, 2018 at 12:36 PM, Hakan Usakli <hakan.usa...@gmail.com> wrote: > In case it helps someone, > Yes there is a way to change the behaviour of 'minimum number of > characters' I struggled with the same problem you have as well for a while > > In this file, > https://github.com/tesseract-ocr/tesseract/blob/master/ccmain/osdetect.cpp > change the value of this constant to something like 5. Recompile and you > are done. > > const int kMinCharactersToTry = 50 > > I have asked the developers to make a command line setting of that > internal constant. If/When they do it I dont know. > Enjoy > Hakan > > On Saturday, April 19, 2014 at 8:13:25 PM UTC+3, Chris Nevin wrote: >> >> Hello, >> >> I am having some trouble getting Tesseract to recognize individual >> characters. Whenever I think I have overcome actual errors, I get the line >> "Too few characters. Skipping this page" >> >> Because I am using Tess4J I have been struggling to find out exactly what >> all of the different options you can set for Tesseract actually are. Would >> anyone be able to tell me if there is a way to set it to not limit the >> minimum number of characters on a page? >> >> Also, I am trying to get Tesseract to recognise characters from chemical >> elements (example attached.) Will Tesseract be able to ignore the structure >> and just pick up on the characters? >> >> Basically any advice as to what would be a good way to go about this >> would be helpful! Even if I should look at training Tesseract or creating a >> word list with the chemical elements or something? >> >> Thanks a lot! >> >> Chris >> > -- > You received this message because you are subscribed to the Google Groups > "tesseract-ocr" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to tesseract-ocr+unsubscr...@googlegroups.com. > To post to this group, send email to tesseract-ocr@googlegroups.com. > Visit this group at https://groups.google.com/group/tesseract-ocr. > To view this discussion on the web visit https://groups.google.com/d/ > msgid/tesseract-ocr/b95edf04-1155-4a5f-9c5b-08d4cfb5271d% > 40googlegroups.com > <https://groups.google.com/d/msgid/tesseract-ocr/b95edf04-1155-4a5f-9c5b-08d4cfb5271d%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. To unsubscribe from this group and stop receiving emails from it, send an email to tesseract-ocr+unsubscr...@googlegroups.com. To post to this group, send email to tesseract-ocr@googlegroups.com. Visit this group at https://groups.google.com/group/tesseract-ocr. To view this discussion on the web visit https://groups.google.com/d/msgid/tesseract-ocr/CAJbzG8yF3P0nAp9KTLE8dS56kocZMEzUpn%2BgFdtyMor6DnAVZw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
