Oxford University : Magic Pony

Pierre Colle
Alezan.ai
Published in
Nov 28, 2022

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Researchers from the Oxford University are able to model articulated horses, using only one viewpoint image per horse.

MagicPony: Learning Articulated 3D Animals in the Wild

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.

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