What are the applications of a 4d light field? First thing that comes to mind is to pre compute all perspectives of a light and shadow of an object, but when would this ever be useful. Only in the scenario where you have a lot of compute pre rendering, a large space budget and need very quick rendering on the fly.
GH-JamesD
Maybe not all perspectives in the continuous sense, but I imagine a discrete set of perspectives could be useful in practical rendering. I imagine this is also useful to artists and animators trying to make their scenes look as realistic as possible.
DreekFire
A light field can capture the 3D structure of a scene. If you are familiar with neural radiance fields, they are like an inverted light field, capturing the radiance instead of the irradiance. This allows you to do things like generate a 3D fly-through of a scene using only photographs taken from a surface surrounding the scene rather than needing a photo at every single 3D location in the scene.
What are the applications of a 4d light field? First thing that comes to mind is to pre compute all perspectives of a light and shadow of an object, but when would this ever be useful. Only in the scenario where you have a lot of compute pre rendering, a large space budget and need very quick rendering on the fly.
Maybe not all perspectives in the continuous sense, but I imagine a discrete set of perspectives could be useful in practical rendering. I imagine this is also useful to artists and animators trying to make their scenes look as realistic as possible.
A light field can capture the 3D structure of a scene. If you are familiar with neural radiance fields, they are like an inverted light field, capturing the radiance instead of the irradiance. This allows you to do things like generate a 3D fly-through of a scene using only photographs taken from a surface surrounding the scene rather than needing a photo at every single 3D location in the scene.