Multi4D: High-Fidelity Dynamic Gaussian Splatting via Multi-Level Competitive Allocation
Multi4D addresses the conflict between motion consistency and visual detail in dynamic 3D Gaussian Splatting by using a competitive allocation framework. It structures modeling into static, persistent dynamic, and transient levels to efficiently capture long-term motion while maintaining high fidelity. This approach achieves state-of-the-art 4D segmentation with significant speedup by focusing optimization on the most relevant geometry.