Alright so I did a bunch of testing and I've found weirdly enough that running tesseract via console produces 100% accuracy via my preprocessing.. just not when I do it via api call in java. I now suspect old version of tesseract screwing stuff up, if that is the case hopefully there is a more updated version of tess4j or else this is going to be really painful to do this via java through cmd (possible but a pain in the ****).
On Tuesday, July 12, 2016 at 2:10:27 AM UTC-4, Raphael Budd wrote: > > Hey everyone, > > I've got this pdf document which is a schedule. I'm trying to extract the > text from it via tesseract but I'm not having that good results. > > I've tried a lot of different things, in my inexperienced opinion the > image seems very high quality as I can zoom in a lot without seeing pixels. > I've also tried to convert the pdf->tiff and add grayscale filter (all via > java). > > I've attached both the end result and the original pdf here along with a > sample of the output, any help making the output better would be > appreciated. > > The tiff file is too big for the attachement; see this link: > http://wltd.org/Daily%20schedule-14.tiff > > ---Begin text--- > 008 KIERA MCG 3:00 PM 11:00 PM TRWN 8.00 — > 718 KYLE s 11:00 PM 7:00 AM MT 8.00 < — > 686 JOSEPH e 11:00 PM 5:00 AM MT 6.00 — > > 718 KYLE s 11:00 PM 7:00 AM MT 8.00 — > > 656 CHANDLER A 1:00 PM 4:00 PM MB 3.00 — > 720 TYLER D 11:00 PM 7:00 AM T|_ F 8.00 < — > 720 TYLER D 11:00 PM 7:00 AM T|_ F 8.00 — > > 052 SH ELLY L 5:30 AM 2:00 PM FLRIFFIMGR F 8.50 _:I > Riley M 372 8:00 AM 4:00 PM FLR F 8.00 — > ‘ Raphael B602 4:00 PM 12:00 AM FLRIMGR F 8.00 ‘ —:| I > ‘ Kevin G 652 11:00 AM 7:00 PM g$Y$IWNIMNY$I F 8.00 ‘ I:-:| I > Joseph C 191 8:00 AM 4:00 PM ADMIBKIMB F 8.00 -:— > 2014 ROXANA T 11:00 AM 7:00 PM ADM F 8.00 _ > > --END TEXT--- > > As you can see tesseract becomes quite creative with its attempt at > parsing this, earlier in the document it even parsed the letter "N" as > "|\|", creative but useless for parsing! > -- 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/5bd7d57d-f3eb-47db-b568-97daba08e87f%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
