Luce: Relightable Gaussians for 3D Asset Generation

Introduces Luce, a 3D representation unifying geometry and PBR materials using voxelized multimodal Gaussian clouds with dedicated primitives for albedo, metallic-roughness, and surface normals. A VAE compresses this into a material-aware latent space, generated by a rectified-flow transformer from a single image. Achieves SOTA on Toys4K (28% FID improvement) and better CLIP score on AI-generated images (0.8519 vs 0.8299). Generates relightable, detailed assets.