Also interesting: https://github.com/apple/ml-sharp

Apples model to generate Gaussian splats from a single image. Takes about 30 seconds on an M1 Pro.

It falls apart once you move too much, but for a little side-wiggling or a second-eye view for VR, it's great. And looks a lot better than the old approach of depth map + vertex shaders that I use in https://github.com/combatwombat/tiefling. But ml-sharp has 2.6 GB weights, a bit too big to run in the browser.