russian-old?

[Yury Tarasievich]

Hi guys,

I may be wrong but the Russian tessdata does not
provide for recognising old orthography and
Church Slavonic glyphs? You know, i with dot,
theta, yat, etc.

Would it be very hard to add the 'rus_old'
variant? Or, is it too difficult to
roll-your-own the changed rus.tessdata on the
local system?

-Yury

[Simon Eigeldinger]

Hi Yury,

Maybe the same happened to it like the german fraktur data.
they seem to have not been updated for a long time and they have been
removed from the main repos.

Greetings,
Simon

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[Simon Eigeldinger]

I guess i have to correct myself.
german fraktur is in the tessdata repo.

[ShreeDevi Kumar]

​Please add as an issue in the langdata repository. Thanks.​

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

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[ShreeDevi Kumar]

There is an existing PR at https://github.com/tesseract-ocr/langdata/pull/12

Does that meet what you are looking for?

ShreeDevi
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-Yury

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[Yury]

Shree, thank you, and yes, accented vowels would be fine,
but right now I was talking of ' іѣѳѵ' set (U+0406,0462,0472,0474 uppercase and U+0456,0463,0473,0475 lowercase).

The 4.0.0.0 version from git definitely refuses to recognise those, and AFAICT there is no mention of the codes in the source files.

I'm a complete noob at git, how could I know when the PR you mentioned becomes available in git as downloads?

-Yury

[ShreeDevi Kumar]

Well, If that PR was the right one you could add a reminder for Ray Smith (chief developer) to include it.

You can try the plus-minus type of finetune training - please see https://github.com/tesseract-ocr/tesseract/wiki/TrainingTesseract-4.00#fine-tuning-for--a-few-characters

ShreeDevi
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[Yury]

Thanks again, Shree,
also, for that comment on the PR page.

Now, the PR looks to me like that's a circa 2015 language data with modifications.
Wouldn't the OCR quality regress compared with 4.* data, or did the langdata source remain the same?

I think I'll just have to file the issue. The materiel in the PR looks too intimidating for me to try to install this stuff by myself. :) Still trying to make sense of that 'plusminus' material!