Can someone ELI5 what this does? I read the abstract and tried to find differences in the provided examples, but I don't understand (and don't see) what the "photorealistic" part is.
Gaussian splashing is pretty awesome.
Imagine history documentaries where they take an old photo, free objects from the background, and then move them round to give the illusion of parallax.
Even using commas, if you leave the ambiguous “free” I suggest you prefix “objects” with “the” or “any”.
Already you sometimes see where manually cut out a foreground person from the background and enlarge them a little bit and create a multi-layer 3D effect, but it's super-primitive and I find it gimmicky.
Bringing actual 3D to old photographs as the camera slowly pans or rotates slightly feels like it could be done really tastefully and well.
I guess this is what they use for the portrait mode effects.
Or if you prefer Blade Runner: https://youtu.be/qHepKd38pr0?t=107
(I am oversimplifying).
I just want to emphasize that this is not a NERF where the model magically produces an image from an angle and then you ask "ok but how did you get this?" and it throws up its hands and says "I dunno, I ran some math and I got this image" :D.