PhyMotion accepted at NeurIPS 2026: 3D physics rewards lift 1.3B video model to 14B level

mohitban47 · x · 2026-09-29

PhyMotion, a structured 3D motion reward for physics-grounded human video generation, is accepted at NeurIPS 2026. It lifts generated videos into 3D and scores motion via physics simulation on kinematic plausibility, contact/balance consistency, and dynamic feasibility — where 2D rewards misleadingly reward floating feet and limb penetration. RL post-training with PhyMotion brings a 1.3B model to 14B-level human preference. Updated paper, code, and demos coming.

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