The tool work for this has been done in T280214.

Although this work is done, and multiple language selection is available in the advanced options of the tool, I wonder if this should stay open for implementing an on-wiki UI for multiple language selection (I can't find another ticket for that).

We did have some discussion about how to do that UI, and I think it was something along the lines of a TagMultiselectWidget with each selection being made via a UniversalLanguageSelector popup (which is how we do multiple langauge selection in SVG Translate Tool, for example). The main question is: where should the widget go? It might look weird in the 'Transcribe text' dropdown menu.

Remember that the languages are not necessarily the same list as "real" languages: they're just different models provided by the relevant tool, and there can by multiple models for one language (e.g. A special model for old school printing).

Importantly, the UI needs the list of available languages.

In T279405#7509281, @Inductiveload wrote:

Remember that the languages are not necessarily the same list as "real" languages: they're just different models provided by the relevant tool, and there can by multiple models for one language (e.g. A special model for old school printing).

Importantly, the UI needs the list of available languages.

Good points! We can get the lists of languages from https://ocr.wmcloud.org/api/available_langs?engine=tesseract so maybe rather than ULS we just have more-or-less the same language chooser UI that is currently on the tool's form, i.e. just a MenuTagMultiselectWidget, with custom data.

We could turn the dropdown into a gear icon, and open a dialog with all the options. It'd have to contain the engine choice, and languages, and tesseract PSM, in order to make the 'advanced options' link redundant (once ODS is doing the cropping, that is).

I think a dialog makes much more sense, because there are a lot more options you might consider to add, for example OCR blacklist chars (T287080) as well as a pre-processing threshold step (T287125) and probably a small handful of other usefully-twiddlable controls. Stuffing it all into a menu is going to get messy.

How are you going with this @Soda? I think there might be some overlap with T331961, so you and @KLawal-WMF might need to compare notes.

Yeah sure, @KLawal-WMF how far have you gotten ?

In T279405#8731593, @Soda wrote:

Yeah sure, @KLawal-WMF how far have you gotten ?

Transkribus has been added as an option in the OCR menu. Currently resolving comments by @Samwilson

Hi @Soda, how far have you gotten ? I am working adding more options for the engines

Change 971235 had a related patch set uploaded (by Kolakachi; author: Kolakachi):

[mediawiki/extensions/Wikisource@master] Add more options for ocr engines

https://gerrit.wikimedia.org/r/971235

Change 989530 had a related patch set uploaded (by Kolakachi; author: L10n-bot):

[mediawiki/extensions/Wikisource@master] Add on-wiki UI for selecting languages

https://gerrit.wikimedia.org/r/989530

Change 989530 abandoned by Kolakachi:

[mediawiki/extensions/Wikisource@master] Add on-wiki UI for selecting languages

Reason:

https://gerrit.wikimedia.org/r/989530

Change 971235 merged by jenkins-bot:

[mediawiki/extensions/Wikisource@master] Add on-wiki UI for selecting languages

https://gerrit.wikimedia.org/r/971235