The Lounge What is on Your Mind? Answers to Recently Asked Questions about UNIX.COM Post 303030223 by joeyg on Thursday 7th of February 2019 08:39:16 AM
With regards to the Google search question.... Even with Google, many find that it is easier to do their search for answers within the site, and thus avoid q&a that may not be relevant.
This User Gave Thanks to joeyg For This Post:
 
Test Your Knowledge in Computers #727
Difficulty: Medium
Radia Perlman Invented the Spanning Tree Protocol (STP).
True or False?

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UNICHARSET_EXTRACTOR(1) 												   UNICHARSET_EXTRACTOR(1)

NAME
unicharset_extractor - extract unicharset from Tesseract boxfiles SYNOPSIS
unicharset_extractor [-D dir] FILE... DESCRIPTION
Tesseract needs to know the set of possible characters it can output. To generate the unicharset data file, use the unicharset_extractor program on the same training pages bounding box files as used for clustering: unicharset_extractor fontfile_1.box fontfile_2.box ... The unicharset will be put into the file dir/unicharset, or simply ./unicharset if no output directory is provided. Tesseract also needs to have access to character properties isalpha, isdigit, isupper, islower, ispunctuation. all of this auxilury data and more is encoded in this file. (See unicharset(5)) If your system supports the wctype functions, these values will be set automatically by unicharset_extractor and there is no need to edit the unicharset file. On some older systems (eg Windows 95), the unicharset file must be edited by hand to add these property description codes. NOTE The unicharset file must be regenerated whenever inttemp, normproto and pffmtable are generated (i.e. they must all be recreated when the box file is changed) as they have to be in sync. This is made easier than in previous versions by running unicharset_extractor before mftraining and cntraining, and giving the unicharset to mftraining. SEE ALSO
tesseract(1), unicharset(5) http://code.google.com/p/tesseract-ocr/wiki/TrainingTesseract3 HISTORY
unicharset_extractor first appeared in Tesseract 2.00. COPYING
Copyright (C) 2006, Google Inc. Licensed under the Apache License, Version 2.0 AUTHOR
The Tesseract OCR engine was written by Ray Smith and his research groups at Hewlett Packard (1985-1995) and Google (2006-present). 02/09/2012 UNICHARSET_EXTRACTOR(1)

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