VoxGRAF: Fast 3D-Aware Image Synthesis with Sparse Voxel Grids. (arXiv:2206.07695v3 [cs.CV] UPDATED)

State-of-the-art 3D-aware generative models rely on coordinate-based MLPs to
parameterize 3D radiance fields. While demonstrating impressive results,
querying an MLP for every sample along each ray leads to slow rendering.
Therefore, existing approaches often render low-resolution feature maps and
process them with an upsampling network to obtain the final image. Albeit
efficient, neural rendering often entangles viewpoint and content such that
changing the camera pose results in unwanted changes of geometry or appearance.
Motivated by recent results in voxel-based novel …

arxiv image voxel