Main takeover from this article is the new “Implicit-Explicit” approach
“Implicit-Explicit” is mixing :
- Explicit: Meshes are usually used to model articulated things and are trained with few images
- Implicit: SDF (signed distance function) are used to have a fine-grained 3d models, used when having multiple view-point of the same static scene
🦵 The 3D shape of horse with legs … is difficult to model for AI, as we can see it with the 5-legged-horse given by diffusion models
By mixing both, they are able to have a complex and fine-grained model of horses in a self-supervised manner.