Paint to photo ?

I am sorry for the confusion. I am not a seasoned photoshop user. What I mean is the following: in some picture software programs there are filters with which a photo can be rendered (changed) in a painted impression (e.g.: oil paint, water paint, sketch etc...). There are many, many such filters, and the algorithms used are getting better and better. Now, I wondered whether the opposite effect could be possible ? In other words an algorithm that could render a painted image into a "photographic" picture  - as if taken by a camera ?

There is a reason for my request. I am studying the 14th century painting by Van Eyck "the Ghent altar piece". You can look it up in fine detail in the website "closertovaneyck" (courtesy of The Getty Foundation). Take a look at any of the extremely detailed, beautiful paintings of the faces. Wouldn't it be great if a software could turn these into pictures with photographic quality, as if the  "real" 14th century models would stand in front of you?

In the past I thought this would never be possible . But with ever more powerful software, with AI,  I now do believe it could be possible (if not yet available). Not to know how Omer Simpson would look in real life (ridiculous, anatomically impossible) but how realistically painted faces would have looked like in a photo. Wouldn't it be great to see how Mona Lisa looked like in real life ?

If this is not the right forum for such question, accept my apologies. I would be most obliged if you could direct me.