因子グラフ推論による微分可能なメッシュ状態推定:変形物体再構成に向けて
Differentiable Mesh State Estimation via Factor Graph Inference for Deformable Object Reconstruction
物理事前分布・ノイズを含むセンサ計測・時間平滑化制約を統合した因子グラフベースの確率論的枠組みで、四面体メッシュを直接更新し変形物体の状態を推定する手法を提案。気道閉塞の生体外実験と立方体変形シミュレーションで有効性を示した。
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著者: 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
分類: cs.RO, cs.CV
原文アブストラクト
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.