Plenoxels: Radiance Fields without Neural Networks

Understand

We introduce Plenoxels (plenoptic voxels), a system for photorealistic view synthesis.

• Plenoxels represent a scene as a sparse 3D grid with spherical harmonics.
• This representation can be optimized from calibrated images via gradient methods and regularization without any neural components.
• On standard, benchmark tasks, Plenoxels are optimized two orders of magnitude faster than Neural Radiance Fields with no loss in visual quality.