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shapeclustering - shape clustering training for Tesseract


shapeclustering -D output_dir -U unicharset -O mfunicharset -F font_props -X xheights


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.


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'

The output unicharset that will be given to combine_tessdata(1).

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