Machine Heart

May 6, 2026 · Artificial Intelligence

Scal3R Enables Stable Kilometer-Scale 3D Reconstruction of Long Videos

Scal3R introduces test‑time training with a global‑context memory and synchronization mechanism that lets models train on and infer over ultra‑long video sequences, achieving accurate camera poses and dense point clouds for kilometer‑scale scenes while outperforming prior SLAM, SfM and streaming baselines on multiple benchmarks.