Getting segmentation fault when trying to train the Tesseract on a new font

[Benjamin Hall]

I am using tesseract (Pytesseract to be exact)on a video and I am trying to get better detections buy trying to train the tesseract on a new font so I found a tutorial at:

https://www.youtube.com/watch?v=1v8BPw0Dn0I

And This tutorial give very simple and straight forward direction on how to do this (posted below):

Step 1: Make box files for images that we want to train

Syntax: tesseract [langname].[fontname].[expN].[file-extension] [langname].[fontname].[expN] batch.nochop makebox

Eg:tesseract train.my.exp0.tif train.my.exp0 batch.nochop makebox

{*Note: After making box files we have to change or modify wrongly identified characters in box files.}

Step 2: Create .tr file (Compounding image file and box file)

Syntax: tesseract [langname].[fontname].[expN].[file-extension] [langname].[fontname].[expN] box.train

Eg: tesseract train.my.exp.tif train.my.exp0 box.train

Step 3: Extract the charset from the box files (Output for this command is unicharset file)

Syntax: unicharset_extractor [langname].[fontname].[expN].box 

Eg: unicharset_extractor train.my.exp0.box

Step 4: Create a font_properties file based on our needs.

Syntax: echo "[fontname] [italic (0 or 1)] [bold (0 or 1)] [monospace (0 or 1)] [serif (0 or 1)] [fraktur (0 or 1)]" [angle bracket should be here] font_properties 

Eg: echo "arial 0 0 1 0 0" [angled bracket] font_properties

Step 5: Training the data.

Syntax: mftraining -F font_properties -U unicharset -O [langname].unicharset [langname].[fontname].[expN].tr

Eg: mftraining -F font_properties -U unicharset -O train.unicharset train.my.exp0.tr

Step 6:

Syntax: cntraining [langname].[fontname].[expN].tr

Eg: cntraining train.my.exp0.tr

{*Note:After step 5 and step 6 four files were created.(shapetable,inttemp,pffmtable,normproto) }

Step 7: Rename four files (shapetable,inttemp,pffmtable,normproto) into ([langname].shapetable,[langname].inttemp,[langname].pffmtable,[langname].normproto)

Syntax: rename filename1 filename2

Eg:

    rename shapetable train.shapetable

    rename inttemp train.inttemp

    rename pffmtable train.pffmtable

    rename normproto train.normproto

Step 8: Create .traineddata file

Syntax: combine_tessdata [langname].

Eg: combine_tessdata train.

Move .traineddata file to tesseract programs tessdata directory

C:\Program Files\Tesseract-OCR\tessdata

Run tesseract for trained fronts

tesseract Test2.png stdout -l train

I get a segmentation fault on Step 5.  Has anyone ever had this issue before?  Thank you in advance.

[Zdenko Podobny]

try to follow official training docs:

https://tesseract-ocr.github.io/tessdoc/#training-for-tesseract-5

Zdenko

ne 14. 8. 2022 o 7:59 Benjamin Hall <codename...@gmail.com> napísal(a):

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[Benjamin Hall]

OK!   Thank You!

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