This is a WebGL implementation of a real-time renderer for 3D Gaussian Splatting for Real-Time Radiance Field Rendering, a recently developed technique for taking a set of pictures and generating a photorealistic navigable 3D scene out of it. As it is essentially an extension of rendering point clouds, rendering scenes generated with this technique can be done very efficiently on ordinary graphics hardware- unlike prior comparable techniques such as NeRFs.
You can see the examples from the theory paper can be found on example section from antimatter15 GitHub repo splat.