Vision & Diffusion4 min read
Computer Vision, World Models & AI Research
PhiZero: teaching video AI to think in physics before it renders
PhiZero, a CASIA world model, learns a compact discrete "physical language" from raw video and uses it to reason about how a scene will evolve before rendering frames. The authors argue this reason-then-render design produces more physically coherent video than direct pixel prediction.
2026-07-31