diff mupdf-source/thirdparty/tesseract/doc/shapeclustering.1.asc @ 2:b50eed0cc0ef upstream

ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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+SHAPECLUSTERING(1)
+==================
+:doctype: manpage
+
+NAME
+----
+shapeclustering - shape clustering training for Tesseract
+
+SYNOPSIS
+--------
+shapeclustering -D 'output_dir'
+    -U 'unicharset' -O 'mfunicharset'
+    -F 'font_props' -X 'xheights'
+    'FILE'...
+
+DESCRIPTION
+-----------
+shapeclustering(1) takes extracted feature .tr files (generated by
+tesseract(1) run in a special mode from box files) and produces a
+file *shapetable* and an enhanced unicharset.  This program is still
+experimental, and is not required (yet) for training Tesseract.
+
+OPTIONS
+-------
+-U 'FILE'::
+	The unicharset generated by unicharset_extractor(1).
+
+-D 'dir'::
+	Directory to write output files to.
+
+-F 'font_properties_file'::
+	(Input) font properties file, where each line is of the following form, where each field other than the font name is 0 or 1:
+
+	'font_name' 'italic' 'bold' 'fixed_pitch' 'serif' 'fraktur'
+
+-X 'xheights_file'::
+	(Input) x heights file, each line is of the following form, where xheight is calculated as the pixel x height of a character drawn at 32pt on 300 dpi. [ That is, if base x height + ascenders + descenders = 133, how much is x height? ]
+
+	'font_name' 'xheight'
+
+-O 'FILE'::
+	The output unicharset that will be given to combine_tessdata(1).
+
+SEE ALSO
+--------
+tesseract(1), cntraining(1), unicharset_extractor(1), combine_tessdata(1),
+unicharset(5)
+
+<https://tesseract-ocr.github.io/tessdoc/Training-Tesseract.html>
+
+COPYING
+-------
+Copyright \(C) Google, 2011
+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 (2006-2018).