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arXiv · 2606.29379

DR-GS: Physically-Based Deformable and Relightable 2D Gaussians

Jiaxin Li·Tong Wu·Yi Wei·Tailin Wu·Li Zhang
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Abstract

Gaussian splatting (GS) has garnered significant attention in VR/AR and digital content creation due to its explicit parameterization and efficient rendering capabilities. However, existing GS-based methods for deformable objects face two key limitations: (i) illumination is erroneously baked into textures, causing physically inconsistent responses under dynamic deformations and lighting changes; (ii) snapshot-based reconstruction restricts post-reconstruction material editing. To address these challenges, we propose Deformable and Relightable GS (DR-GS), a unified Gaussian framework that integrates physically-based inverse rendering, relighting, and deformation-aware manipulation. Through explicitly disentangling geometry, illumination, and material representations, DR-GS overcomes the limitations of static snapshots, resolving unrealistic appearance under varying conditions while enabling post-reconstruction parameter editing. Extensive experiments show that DR-GS achieves leading visual quality across static reconstruction, dynamic deformation, and relighting, reliably preserving reflections and specular highlights on glossy surfaces. It further establishes a fully decoupled geometry-illumination-material pipeline, enabling high-quality 3D asset creation and comprehensive post-editing.

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Jiaxin Li, Tong Wu, Yi Wei, Tailin Wu, Li Zhang. 2026-06-28. DR-GS: Physically-Based Deformable and Relightable 2D Gaussians. https://arxiv.org/abs/2606.29379

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