Scene-level mesh-based 4D modeling

Determine a mesh-based 4D generation and reconstruction framework that can generate and track separate mesh topologies for multiple objects at varying scales, handle inter-mesh physical constraints, and maintain temporal coherence when objects move independently with different deformation patterns across time.

Background

The survey highlights that most mesh-centric 4D methods focus on object-level modeling and struggle with scene-level dynamics involving multiple interacting meshes. Key difficulties identified by the authors include handling different mesh topologies simultaneously, enforcing physical constraints between meshes, and ensuring temporal coherence when objects move and deform independently.

These limitations arise from the topological inflexibility of meshes and their challenges in representing volumetric phenomena and complex interactions, motivating investigation into robust scene-level pipelines that remain within a mesh-based framework.