Description of unicharset is in its manual page[1]. Also in past I found that some information are missing from unicharset (generated by unicharset_extractor) e.g. 'script' is NULL, 'glyph_metrics' is IMO useless). This is one of the reason why I am looking for test suite - to see if adding such information helps to OCR output or not.
[1] http://tesseract-ocr.googlecode.com/svn-history/r683/trunk/doc/unicharset.5.html -- Zdenko On Fri, Jun 1, 2012 at 10:49 AM, Nick White <nick.wh...@durham.ac.uk> wrote: > Does nobody have any clues here? Any suggestions of where else I > could ask, or where to go in the code to work it out for myself? > > Thanks again. > > Nick > > On Wed, May 23, 2012 at 05:33:37PM +0100, Nick White wrote: > > Hi again, > > > > I recently added a wordlist to my training, and was disappointed to > > find that it didn't seem to substantially improve the results. I > > suspect this is in significant part due to the unicharset not > > recognising equivalent upper and lower case letters (and hence not > > matching dictionary words case insensitively). > > > > Examining the provided unicharset file for ell.trainingdata I see > > that the 7th column appears to refer to the id of the opposite case > > letter. So for example the two lines: > > > > Α 5 39,70,132,255,39,204,0,44,52,288 Greek 25 0 101 Α>--# Α [391 ]A > > α 3 59,72,188,200,98,175,0,67,102,288 Greek 101 0 25 α>-# α [3b1 ]a > > > > refer to each other as 101 and 25 respectively. > > > > However my generated unicharset file includes no such references, > > with the 7th column being always 0. For example: > > > > Α 5 0,255,0,255,0,32767,0,32767,0,32767 NULL 777 0 0 #>-# Α [391 ]A > > α 3 0,255,0,255,0,32767,0,32767,0,32767 NULL 766 0 0 #>-# α [3b1 ]a > > > > Should this case information be handled automatically when the > > unicharset is created? If so, any clues as to how may I go about > > tracking down why it isn't working? If not, make a note to add that > > to the wiki when it's updated for 3.02. > > > > Thanks for any advice, > > > > Nick > > > > -- > > You received this message because you are subscribed to the Google > > Groups "tesseract-ocr" group. > > To post to this group, send email to tesseract-ocr@googlegroups.com > > To unsubscribe from this group, send email to > > tesseract-ocr+unsubscr...@googlegroups.com > > For more options, visit this group at > > http://groups.google.com/group/tesseract-ocr?hl=en > > -- > You received this message because you are subscribed to the Google > Groups "tesseract-ocr" group. > To post to this group, send email to tesseract-ocr@googlegroups.com > To unsubscribe from this group, send email to > tesseract-ocr+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/tesseract-ocr?hl=en > -- You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. To post to this group, send email to tesseract-ocr@googlegroups.com To unsubscribe from this group, send email to tesseract-ocr+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/tesseract-ocr?hl=en
