https://www.youtube.com/watch?v=EmKQsSDlaa4
I don't think there are any phase effects in the parent attached? Or are there?
https://www.youtube.com/watch?v=EmKQsSDlaa4
I don't think there are any phase effects in the parent attached? Or are there?
This solution relies on a physicals height map (in the author's word, a 2.5D surface), whether that counts as a 2D surface I don't know.
(and yes, I also saw the great explanation from 3blue1brown).
This isn't 3D information on a 2D surface. If anything it is 2D information on a 3D surface.
It is just using refraction to make brighter and darker areas in its shadow/caustics to make an image. The paper is 10 years old at this point and linked by this article.
https://rgl.s3.eu-central-1.amazonaws.com/media/papers/Papas...
https://nishitalab.org/user/egaku/tog14/yue-continuous-caust...
I think once you read the papers you will realize that the only thing 3D is the surface of the lens and that is only so it can get curves and angles for the refraction.