arXiv:2606.17027cs.CV2026-06

无需迭代优化,秒级完成任意形状网格序列的形变对齐。

MeshLoom: Feed-Forward Non-Rigid Registration of Mesh Sequences

论文配图:MeshLoom: Feed-Forward Non-Rigid Registration of Mesh Sequences
图 1 · 摘自论文原文
  • 通过拓扑感知编码器融合参考网格与每帧特征,生成全局运动嵌入。
  • 在多类物体、复杂运动上实现当前最佳对齐精度,支持中间帧插值。
  • 适合需要高效动态网格处理的应用,如动画生成与3D重建。

我们提出MeshLoom,一种前馈式非刚性网格序列配准网络,可直接重建顶点形变。该方法突破现有模型局限:避免逐实例优化、仅限特定类别、仅支持成对输入或仅输出中间结果。网络结构简洁高效,可在数秒内完成多网格配准。核心为拓扑感知编码器-解码器设计:首先构建拓扑感知点表示,将参考网格拓扑信息编码至顶点特征中,增强对几何结构的理解并区分欧氏接近但测地距离远的点。随后设计多模态编码器,融合参考网格表示与各帧的形状潜变量、图像特征等互补信号,压缩为紧凑的全局运动嵌入,捕捉密集帧间对应关系。轻量解码器以参考网格点表示查询该嵌入,获取目标时间戳的顶点形变。大量实验表明,MeshLoom在多样运动与物体类别上均达到当前最优性能。此外,其嵌入-查询范式自然支持中间时间戳的形变生成,扩展至运动插值与网格变形。项目页:https://meshloom.github.io/

原文摘要 · Abstract (English)

We present MeshLoom, a feed-forward registration network that directly reconstructs vertex deformations across mesh sequences. Our approach advances non-rigid registration beyond existing models, which are typically constrained by costly per-instance optimization, narrow object categories, pairwise-only inputs, or merely intermediate outputs. The network is simple and efficient, registering multiple meshes within seconds. At its core lies a topology-aware encoder--decoder design. Specifically, we first introduce a topology-aware point representation that encodes the anchor (reference) mesh's topology into its per-vertex features. This representation strengthens the network's understanding of the anchor-mesh geometry and disambiguates points that are Euclidean-close yet geodesically distant. We then propose a multi-modal encoder that fuses this anchor-mesh representation with complementary cues from each frame, such as shape latents and image features. These multi-source signals are compressed into a compact global motion embedding that captures dense inter-frame correspondence. A lightweight decoder then queries this global embedding with the anchor-mesh point representation, retrieving per-vertex deformations at target timestamps. Through extensive experiments across diverse motions and object categories, we show that MeshLoom achieves state-of-the-art results on non-rigid registration. In addition, we find that our global embedding-then-query paradigm naturally enables the network to generate deformations at intermediate timestamps, which extends MeshLoom to motion interpolation and mesh morphing. Project page: https://meshloom.github.io/ .

非刚性配准网格处理运动建模前馈网络

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