Japanese gives an error

[niksedk]

When running tesseract cmd line with Japanese (latest language file - tried both tessdata and tessdata_best) this error message is returned: read_params_file: parameter not found: textord_tabfind_vertical_horizontal_mix

Tesseract version: latest (2cc46fa), build via vcpkg install tesseract:x64-windows --HEAD

[Shreeshrii]

@stweil Is it possible that some deprecated parameters are still there in config files?

@niksedk Please test with tessdata_fast and report. Thanks! tessdata_fast is the recommended repository to use for OCR with the new LSTM engine.

[amitdo]

Is it possible that some deprecated parameters are still there in config files?

Yes.

That parameter was removed in #1418

[stweil]

It looks like we should add a testcase which simply loads all languages.

[niksedk]

@Shreeshrii: thx for the info,tessdata_fast does not crash :)

[stweil]

According to my tests, jpn.traineddata and jpn_vert.traineddata` in tessdata are the only files which need to be fixed. This is addressed by tesseract-ocr/tessdata#92.

All other languages and also the files from tessdata_best and tessdata_fast look good.

[amitdo]

@stweil, what did you look for? Just textord_tabfind_vertical_horizontal_mix
or all removed parameters?

[amitdo]

tesseract-ocr/langdata#121 (comment)

[stweil]

I first looked for all parameters used in tessdata and checked whether they still exist in tesseract git master. In addition I looked for textord_tabfind_vertical_horizontal_mix (which was the only problem reported from the first test) in tessdata_best and tessdata_fast.

Finally, I also checked all parameters in tesseract/tessdata (no problem found):

cat $(ls tessdata/*configs/*|grep -v Make)|sort|uniq|grep -v '^#'|sed 's/[[:space:]].*//'|uniq|grep ^[a-z] >/tmp/parameters.txt
for p in $(cat /tmp/parameters.txt|sort|uniq); do git grep -q $p || echo $p not found; done

[delonzhou]

@niksedk @stweil I found the issue still exists in the latest tessdata_best.

[stweil]

You are right. See tesseract-ocr/tessdata_best#28.