PointInfinity: Resolution-Invariant Point Diffusion Models

1k 4k 16k 131k Surface Image Figure 1. We present a resolution-invariant point cloud diffusion model that trains at low-resolution (down to 64 points), but generates high-resolution point clouds (up to 131k points). This test-time resolution scaling improves our generation quality. We visualize our high-resolution 131k point clouds by converting them to a continuous surface.