PhysForge: Generating Physics-Grounded 3D Assets for Interactive Virtual World
Summary
PhysForge is a two-stage framework that generates interactive 3D assets with grounded physics and kinematic parameters, addressing the bottleneck of static geometry in virtual worlds.
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Paper page - PhysForge: Generating Physics-Grounded 3D Assets for Interactive Virtual World
Source: https://huggingface.co/papers/2605.05163
Abstract
PhysForge generates interactive 3D assets by combining visual-language modeling for physical planning with a physics-grounded diffusion model that synthesizes detailed geometry and kinematic parameters through a novel injection mechanism.
Synthesizing physics-grounded 3D assets is a critical bottleneck for interactive virtual worlds and embodied AI. Existing methods predominantly focus on static geometry, overlooking the functional properties essential for interaction. We propose that interactive asset generation must be rooted in functional logic and hierarchical physics. To bridge this gap, we introduce PhysForge, a decoupled two-stage framework supported by PhysDB, a large-scale dataset of 150,000 assets with four-tier physical annotations. First, a VLM acts as a “physical architect” to plan a “Hierarchical Physical Blueprint” defining material, functional, and kinematic constraints. Second, aphysics-grounded diffusion modelrealizes this blueprint by synthesizing high-fidelity geometry alongside precisekinematic parametersvia a novelKineVoxel Injection(KVI) mechanism. Experiments demonstrate that PhysForge produces functionally plausible,simulation-ready assets, providing a robust data engine for interactive 3D content and embodied agents.
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