LGTM: Apple and HKU Researchers Achieve Native 4K Feed-Forward Gaussian Splatting

Researchers from Apple and the University of Hong Kong have introduced LGTM (Less Gaussians, Texture More), a new method for 3D Gaussian Splatting that scales to native 4K resolution in a single feed-forward pass. The key innovation is decoupling geometry from appearance: rather than predicting pixel-aligned primitives—which grow quadratically with resolution—LGTM predicts a compact set of Gaussian primitives paired with per-Gaussian RGBA texture maps, using far fewer Gaussians to render the same image resolution with sharper high-frequency detail.

The method is designed to be plug-and-play, supporting monocular, two-view, and multi-view inputs with or without known camera poses, and has been validated against existing baselines including Flash3D, NoPoSplat, and DepthSplat. LGTM is accepted at ICLR 2026, with code made available alongside the paper.