What is extractable from an image using the attachment plugin?


I am trying to work out the limits of what is possible with the attachment
plugin for elasticsearch. Working with document based attachments is
absolutely fine and I have no problem with that. However, I would like to
know what exactly can I extract from image attachments? Other than image
metadata (e.g. EXIF) can I expect the plugin to perform a sort of OCR
function, and recognise when an image contains text and then make that text

I've tried it locally, and it didn't work, but I wanted to ask other users
in case they've successfully been able to get this to work, and I'm doing
something wrong.


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