I have generated PGM images from a pdf file, using pdttoppm -gray. The clarity of these images is dramatically improved by setting a resolution of 300 or even 600. For tesseract, I convert these to PNGs. Running against a PNG, I always see this:
Warning. Invalid resolution 0 dpi. Using 70 instead. I have tried using IM convert to add a -density to the PNG, but it is not recognised by tesseract. In any case, tesseract processes the image. I have two questions. 1) Is it possible to set resolution on a PNG in a way that tesseract will recognise? 2) Would it make any difference to the tesseract result? 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 https://groups.google.com/group/tesseract-ocr. To view this discussion on the web visit https://groups.google.com/d/msgid/tesseract-ocr/e6776e8c-0843-4a38-a490-df2b4113cb0a%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
