Authors

Kiyohiro Nakayama

Publications 2

Preprint Open access

PCAsplat: Gaussian Splatting with Local PCA Regularization

Vitor Matias, Filipe Nascimento, Kiyohiro Nakayama et al. · 2026

Gaussian splatting has emerged as a flexible representation for 3D reconstruction from posed images. However, existing methods are optimized primarily using rasterization-based losses, which supervise a splat only when it contributes to sampled camera rays. Gaussians that are occluded or contribute little to the sample …

Preprint Open access

Level-of-Token Diffusion

Kiyohiro Nakayama, Brian Chao, Jan Ackermann et al. · 2026

Image and video diffusion models allocate equal computation to every region, even when the intended scene calls for varying levels of detail. The spatial distribution of detail can often be anticipated before generation, indicating where computation can be reduced. We introduce Level-of-Token (LoT) Diffusion, a framewo …

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