3D Generation: From Point Clouds to NeRFs

Module: Generative AI | Difficulty: Advanced

Point Cloud Generation

Chamfer Distance:

3D-Aware GANs (GRAF, GIRAFFE)

Generate NeRF from latent code:

Mesh Generation

import torch
def chamfer_distance(pc1, pc2):
    diff = pc1.unsqueeze(2) - pc2.unsqueeze(0)
    dist = (diff**2).sum(-1)
    d1, _ = dist.min(2)
    d2, _ = dist.min(1)
    return d1.mean() + d2.mean()