tesstrain.sh: /tmp/tmp.XXXXX/xxx/xxx.Font.exp0.box does not exist or is not readable

[Dan9er]

I'm trying to train tesseract using tesstrain and I'm getting this error: https://pastebin.com/xJj3w9jZ

[Dan9er]

I think I now know how to do it.

I have to run training/text2image --find_fonts and then set the tesstrain --fontlist flag to the file that is generated.

[ShreeDevi Kumar]

I don't think you can use that file directly, but yes, you can update the font list for your language either in kanguage-specific.sh or via command line.

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[Dan9er]

Nope. 😢

https://pastebin.com/BskUsSm7

[ShreeDevi Kumar]

Your command needs to be on the following lines:

training/tesstrain.sh \

  --fonts_dir /home/shree/.fonts \

  --tessdata_dir ./tessdata \

  --training_text ../langdata/ben/ben.training_text \

  --langdata_dir ../langdata \

  --lang ben  \

  --linedata_only \

  --noextract_font_properties \

  --exposures "0"    \

  --fontlist "e-Grantamil" \

             "e-Grantha OT" \

  --output_dir ~/tesstutorial/ben

See the fontlist argument, it is quoted names of the fonts. You can put one on each line with \

ShreeDevi
____________________________________________________________
भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com

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[ShreeDevi Kumar]

see https://github.com/tesseract-ocr/tesseract/issues/806#issuecomment-292774103

it has a command which will build a list of fonts in the format that you can copy as part of command line.

Please modify appropriately for your case.

ShreeDevi
____________________________________________________________
भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com

[Dan9er]

Ok, I made a sh that runs tesstrain.sh with all 562 compatible fonts. But now I'm getting an error saying ./langdata/common.punc does not exist... https://pastebin.com/8aaMjH6k 

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[ShreeDevi Kumar]

https://github.com/tesseract-ocr/langdata/blob/master/common.punc

You should read the Readme.md in langada repo for info on the files required for training g

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[Dan9er]

I added the common.punc file. But now I'm getting the box error again: https://pastebin.com/BsNL3KJv

[ShreeDevi Kumar]

1. Fontconfig error: line 1: no element found
2. Fontconfig error: Cannot load default config file
3. Could not find font named NanumMyeongjo Semi-Bold.
4. Pango suggested font NanumMyeongjo Bold.
5. Please correct --font arg.
6. ERROR: /tmp/tmp.tiLxemomPr/npn/npn.NanumMyeongjo_Semi-Bold.exp0.box does not exist or is not readable

ShreeDevi
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भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com

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[Dan9er]

Did that, and it actually started training! It almost got to the end of my font list before...

ERROR: /tmp/tmp.YLL4mGn66F/npn/npn.Aileron_Heavy.exp0.tr does not exist or is not readable

Also, there were some ERRORs, but there weren't any FATALITYies (lol), so I think i'm good.

[v-room]

ask java

[Dan9er]

What you mean "Ask Java"? Tesseract is 90% C++, silly.

[Dan9er]

Bump

[Dan9er]

I ditched my 500+ font fontlist for one with just 3. It runs much faster now, and I got to Phase M before I got a ./langdata/font_properties does not exist or is not readable error.

[Dan9er]

Added that and it worked perfectly.

I'm finally done.