Try .net wrapper with newer version of tesseract. invert the image, smoothen/blur, make greyscale ... I tried with vietocr
output is 'QBCDEFGHIJKL' ShreeDevi ____________________________________________________________ भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com On Thu, Oct 23, 2014 at 12:07 PM, <[email protected]> wrote: > Hello. > > I have images that contain characters that are made from individual dots, > like from a dot matrix printer. I tried to use various operations on the > images (binarization, edge detection, dilatation, ...) and was able to make > the dots bigger so they are connected 90% of the time. However, detection > is still very bad. > > This image contains characters from A to L > > > <https://lh3.googleusercontent.com/-WxgjmUF846M/VEig6eA1FNI/AAAAAAAAAAM/BdQPQPVTUrs/s1600/AL.png> > my modified version is > > > <https://lh5.googleusercontent.com/-TUZSXsiBHJY/VEihDy5RCUI/AAAAAAAAAAU/HmwIkEemSAY/s1600/AL2.png> > after recognition, Tesseract (3.02, using the .NET wrapper) gives me for > the standard english language the characters "FJBEDEFEHIJKL". Only the last > 5 characters are right, the rest is wrong. Do you know of a way to make > recognition better besides training a new font for this special case? > Tesseract works quite good for other projects I have, I would love a > solution that does not rely on a special font if possible. > > > -- > 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/e6b8d4bb-ecc3-463c-9cc7-96f46a63be27%40googlegroups.com > <https://groups.google.com/d/msgid/tesseract-ocr/e6b8d4bb-ecc3-463c-9cc7-96f46a63be27%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/CAG2NduUMF22mWm0x6aKekPAQqy6LCPyadTeube%3DdXMWbMW-dmQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
