Straighten the image before sending to tesseract. You can use scantailor or unpaper. Imagemagick may also have an option, you'll have to look.
See attached images - output from scantailor - and then OCRed using Vietocr (gui frontend to Tesseract) MODEL NAME 7 MOORE RF28HMEDBSR ml.“ | mt RFQBHMEDBSH MODEL NAML I MODELE I RF34H996084 ShreeDevi ____________________________________________________________ भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com On Thu, Nov 13, 2014 at 3:30 AM, Bill Garrison <[email protected]> wrote: > So if someone sends in labels like the attached ones, I need to grab the > model number. So far results from straight tesseract usage are dismal. I > used an ImageMagick library to clean up the image a bit and send it in and > if its rotated at ALL the results are still dismal. Overall, I am just > looking to increase accuracy. > > Steps I have taken: > > 1) Using pre-processing library to clean up image > 2) Added a new config that turns off dictionary and calls in a words file > that has all the different samsung model numbers in it > 3) tried to take my most promising pre-processed image and create a box > file and then used "tesseract <image_name> <box_file_name> nobatch > box.train" to train tesseract to not miss the two characters it missed > ....this caused a segmentation fault. > > Any hints or advice about how I can use tesseract to grab this information > with at least 50% accuracy would be GREATLY appreciated. > > Thanks!! > > -- > 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 [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/tesseract-ocr. > To view this discussion on the web visit > https://groups.google.com/d/msgid/tesseract-ocr/aeb92e24-faa7-4a08-bcca-e7ab0c225776%40googlegroups.com > <https://groups.google.com/d/msgid/tesseract-ocr/aeb92e24-faa7-4a08-bcca-e7ab0c225776%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 [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/tesseract-ocr. To view this discussion on the web visit https://groups.google.com/d/msgid/tesseract-ocr/CAG2NduVZLH3ksDeAW9D32WsDK_k-WF31Q0fVLb1CnKzOu_RPTQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
