What is Neural radiance fields (NeRFs)?

Neural radiance fields, or NeRFs, are like a super-smart 3D picture maker that can recreate scenes from different angles, just by looking at photos.

Imagine you have a toy box full of building blocks. Each block is a tiny piece of the whole picture. Now, imagine someone takes lots of pictures of your toy box from all around, front, back, top, bottom, and every angle in between. A NeRF is like a clever kid who studies all those photos really closely and then can recreate the toy box in 3D, even if you've never seen it from that side before.

Think of each photo as telling the NeRF about how bright and colorful things look from that angle. The NeRF puts all these clues together like a puzzle. It learns what every part of the scene looks like from many different points of view, and then it can draw or show you the scene from any new angle, just like magic, but with real math behind it!

You don’t need special glasses or fancy tools to see 3D scenes, a NeRF does all the work using photos and clever thinking. It's like having a robot that can imagine what your room looks like from outside the window, just by looking at pictures of it from inside!