arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2609.16686cs.ROcs.CV

基于因子图推理的可微网格状态估计用于可变形物体重建

Differentiable Mesh State Estimation via Factor Graph Inference for Deformable Object Reconstruction

  • University of Tennessee(田纳西大学)
  • Vanderbilt University(范德比尔特大学)
  • Vanderbilt University Medical Center(范德比尔特大学医学中心)
  • University of Utah(犹他大学)
  • NVIDIA(英伟达)

机构由 AI 辅助整理,请以论文原文为准。

Lidia Al-Zogbi, Fangjie Li, Samuel Tobin, James Ferguson, Nithesh Kumar, Alejandro Chara, Kuan-I Chung, Mingxing Rao, Ayberk Acar, Susheela Sharma Stern, Robert… 展开作者

Lidia Al-Zogbi, Fangjie Li, Samuel Tobin, James Ferguson, Nithesh Kumar, Alejandro Chara, Kuan-I Chung, Mingxing Rao, Ayberk Acar, Susheela Sharma Stern, Robert Webster, Daniel Moyer, Alan Kuntz, Caleb Rucker, Tucker Hermans, Jie Ying Wu

AI总结:

提出基于因子图的概率框架,结合物理先验与传感器数据,通过非线性优化直接更新四面体网格,实现可变形物体的可靠状态估计与重建。

AI中文摘要:

估计可变形物体的状态仍然是机器人和仿真领域的基本挑战。我们提出了一种新颖的基于因子图的框架,用于可变形物体的概率网格状态估计。该方法通过将物理先验、噪声传感器测量和时间平滑约束统一在一个概率公式中,直接更新四面体网格——一种丰富且物理基础的环境表示。估计问题被表述为非线性最小二乘优化,并使用Levenberg-Marquardt算法求解。离体中央气道阻塞实验和变形立方体模型的仿真表明,在刚体运动和变形下均能实现可靠且准确的重建,突显了这种概率方法在可变形物体重建中实现原理性、测量驱动的网格状态估计的潜力。

英文摘要:

Estimating deformable object states remains a fundamental challenge in robotics and simulation. We propose a novel factor graph-based framework for probabilistic mesh state estimation of deformable objects. The method directly updates a tetrahedral mesh, a rich and physically-grounded representation of an environment, by combining physics priors, noisy sensor measurements, and temporal smoothness constraints within a unified probabilistic formulation. The estimation problem is posed as a nonlinear least-squares optimization and solved using Levenberg-Marquardt. Ex vivo central-airway obstruction experiments and simulations on deforming cube models demonstrate reliable and accurate reconstruction under both rigid motion and deformation, highlighting the potential of this probabilistic approach for principled, measurement-driven mesh state estimation in deformable object reconstruction.

补充信息

↑