WorldDirector: Building Controllable World Simulators with Persistent Dynamic Memory
- Published
- Source
- arXiv
- Paper number
- 548
- Field
- Computer Vision
- arXiv ID
- 2607.02517
Key points
- It explicitly separates motion planning for dynamic objects from video synthesis, which lets it preserve both physical logic and appearance stability.
- An LLM orchestrator generates 3D trajectories and then projects them into 2D to provide location conditioning for the video generation model.
- Appearance Binding preserves visual consistency when an object reappears, regardless of how long it was off screen.
- It achieves SOTA on every reconstruction metric, with PSNR 18.127, SSIM 0.502, and LPIPS 0.359.
- It is far ahead on dynamic object consistency as well, with DSC_DINO at 0.769 and DSC_CLIP at 0.917.
- Promptable World Events lets users freely design the timing, motion, and trajectories of new objects that do not appear in the initial frame.
Paper links
External research summaries. These are not HDATF publications or measured product results.