Lance Reddick has died, but they plan to make a TV show about The Continental. Is it possible to "revive" dead actors through some digital technology? Is this primarily a legal question - who gets the money from the acting - the family of Lance?
Can it be done?
It would be much easier if he had recently posed for a photogrammetry, 3D scanning session…
This takes under 30 seconds to do, with >200 individual stills cameras, but idk how long to them map to a useable form. I've been in these booths myself, many times, but I've never seen the process to completion, after this part.
…but it has been done just from existing footage of an actor in a previous movie & a plaster head cast made some years earlier, for another movie - viz Peter Cushing in Star Wars.
Will they do it? Your guess is as good as anyone else's.
It's expensive. It requires a mo-cap actor to convincingly portray him. It then has to have the 3D model mapped onto that.
It then needs a voice actor who can sound convincingly like him.
More background to this on Star Wars Fandom
As to the rest - there's the moral issue, for which his estate would have to make the decision. Recompense would presumably go to his estate, but all that would be guided by a room-full of lawyers.
Just adding a cent to what Tetsujin has said:
And, largely what he has described is traditionally done in post production.
But what if all of that was done before, prepped, and then applied to a body/head double, that then proceeded to act on set as if they were them, all the time the projected face is already mapped on to them and seen by the camera recording? No need for lengthy and costly post production.
With the scanning he has mentioned, I too have done it, I have also been on the other side ..
With enough of the correct information they can do it in real time.
I have been on sets where they did this in real time, and even the stand-ins were projected with the talents features and all you needed was the voice (which can also be done). At the very least, you could shoot it as normal, without requiring post production.
But would they?
Legal/Estate/etc issues aside, the technology required for this in real time filming requires a few extra bits of equipment and brain cells, and throws in a few extra requirements, so it is not 'easy', but it is do-able.
That said, its a lot easier to film scenes without that extra baggage, and it is not insignificant, so for my money, they would probably recast and get on with it.
Particularly as legal/estate/etc issues are avoided by recasting.
I was having a chat this very recently about some such, including adding the voice to the face, and Val Kilmer's AI'd voice in Top Gun2 came up as an example. That was post-produced for that project, but real time is here already.