Machine Heart

Jul 17, 2026 · Artificial Intelligence

How RynnWorld‑4D Gives Robots a 3D‑Future Vision with 4D World Modeling

The article analyzes the limitations of 2D video‑based world models for robotic manipulation, introduces the RGB‑DF 4D representation and a three‑branch Transformer with joint cross‑modal attention, details a staged training pipeline and a massive 4D dataset, and demonstrates superior geometry, motion, and policy performance on real‑world dual‑arm tasks.